|
This is not an official version. POINT IN TIME |
|
| August 11, 2006 to March 19, 2012 |
|
[Repealed on Mar. 20/12] Mines Safety of Workers Regulations
Amended by: 60/06 CONSOLIDATED
Mines Safety of Workers Regulations
Under the authority of section 17 of the Mines Act
and the Subordinate Legislation Revision and Consolidation Act
, the Lieutenant-Governor in Council makes the following regulations. REGULATIONS
Short title
1.
These regulations may be cited as the Mines Safety of Workers Regulations
. Definition
2.
"Approved, authorized or suitable" means acceptable to the chief inspector. Administration of regulations
3.
(1) The minister may, in special circumstances or conditions and in conformity with the recommendation of the chief inspector, suspend for a determined period any of these regulations.
(2)
The minister may adopt codes in total or in part
(a)
to provide occupational health and safety standards;
(b)
to govern design and operation of equipment used; and
(c)
to establish safe operating practices at mines.
(3)
Where proposed codes differ from those established by national or international agreement or where codes are of local origin, the minister may consult with operating management and labour groups before adoption of the codes.
(4)
Codes or portions of codes adopted by the minister under this section shall be considered to be incorporated in and may be enforced in the same manner as these regulations after notice of adoption had appeared in the Gazette
. Workplace monitoring
4.
(1) The results of all environmental surveys in the workplace shall be made available to the joint committee.
(2)
Equipment used by the employer to monitor the work environment shall be made available to the joint committee for the same purpose but the equipment shall only be used by persons trained to use it and to interpret the results. Age limit
5.
(1) A person under 18 years of age shall not be employed in the underground works of a mine.
(2)
A person under 20 years of age employed in a mine or in immediate connection with the mine shall not be put in charge of machinery for hoisting, for lifting or for haulage.
(3)
A person under 21 years of age shall not be employed to have charge of hoists used for hoisting or lowering workers in a mine or in workings connected with the mine.
(4)
A person under 20 years of age shall not be put in charge of or be made responsible for the charging of blasting holes with explosives or for the firing of explosives in blasting holes.
(5)
A person under 20 years of age shall not be entrusted with the transmission of signals and orders for putting machines in motion. Scaling
6.
The walls, roofs and faces of all working areas and travelways both underground and in open casts shall be scaled and freed of loose or fissured rocks and stones so as to not present a hazard to the workers. Scaling equipment
7.
The operator shall provide and maintain an adequate supply of properly dressed scaling bars and other equipment necessary for scaling. Ground support
8.
When the enclosing rocks are not safe, slopes, shafts, winzes, levels and other underground workings in use shall be suitably timbered, cased or lined or otherwise made secure. Derricks
9.
Derricks shall not be used for conveying workers except in the case of accidents to persons and other serious emergencies. Examination of pit-wall
10.
The manager shall not permit a person to work near a pit-wall until the wall has been examined by the supervisor in charge of the crew and if the wall is found unsafe, the supervisor shall cause all hazards to be removed before permitting other work to be done near the wall. Unused workings tested for gas
11.
Underground workings which have been in disuse for sometime shall be examined before being used again in order to ascertain whether foul air or other dangerous gases have accumulated there and workers shall only be allowed in the workings as may be necessary to make the examination until the workings are found to be in fit state to work or travel in. Pumps underground
12.
Every working mine shall be provided with suitable and efficient machinery and appliances for keeping the mine free from water, the accumulation or flowing of which might endanger the lives of workers in the mine or in an adjoining mine. Stench warning
13.
A mine designated by the chief inspector shall be equipped by the operator with an approved apparatus for the introduction into the mine workings of ethyl mercaptan or other warning gas approved by an inspector and the apparatus shall be made available and kept ready for instant use for the purpose of warning workers underground of an emergency necessitating a speedy evacuation of the workings. Life-lines
14.
(1) The operator shall when necessary provide sufficient life-lines for the workers and every worker shall continually wear a life-line when working in dangerous places.
(2)
Wire ropes shall not be provided or used for climbing purposes.
(3)
Every person engaged in work on the wall of a pit at such operations as barring loose material, scaling and cleaning shall wear a life-line at all times while so engaged and the life-line shall be snubbed to a solid anchor above the working place and be under the constant supervision of a snub-tender. Methods to be safe and applicable
15.
(1) Every method of mining practised in a mine shall be safe and applicable to the structure of the ore deposit or part of the deposit being mined.
(2)
The chief inspector may order a manager to cease practising a method of mining if in the opinion of an inspector the method is considered unsafe or inapplicable. Maximum extraction
16.
(1) Subject to the provisions of section 15, every method of mining practised in a mine shall be designed and applied to obtain maximum extraction of the known minerals at the time they are approached or encountered.
(2)
The chief inspector may order a manager to cease practising a method of mining if in the opinion of an inspector the method in use or its application is designed to extract the more valuable portion of a mineral, or minerals, at the expense of the less valuable portion of a mineral or minerals.
(3)
Action may not be taken by the chief inspector in respect of subsection (2) if it can be shown that an order to cease practising a method will result in an overall deficit on the operating account of a mine. Precautions to be taken
17.
(1) In drawing ore or other material from stopes, bins or other similar storage places, the manager shall take the steps that are necessary to ensure that the material is settling freely above.
(2)
If a hang-up is indicated, a person shall not be permitted access to the storage place except that entrance may be made only from above the hang-up and then only for the purpose of freeing the hang-up.
(3)
A person who enters the storage place as provided in subsection (2) must wear a safety belt with an attached and anchored life-line and a second worker must attend the life-line of a person so entering the storage place. Maintenance of shaft pillar
18.
Stoping shall not be done within 6.1 metres of a shaft that is used for hoisting workers or material but stoping may be done within 6.1 metres of the shaft if the shaft is to be abandoned and the chief inspector has been so notified in writing. Emergency exit
19.
(1) Outside the period of preliminary work, work shall not be carried on in a mine unless at least 2 passageways are provided through which the workers working in any section of the mine can travel freely to the surface.
(2)
In workings, the passageways shall be at least 30.5 metres apart and their outlets at the surface shall be in separate buildings. Precautions when approaching water accumulation
20.
Where there is or may be an accumulation of water, any working approaching it shall have bore holes kept in advance and the additional precautionary measures shall be taken that may be necessary to obviate the danger of the water suddenly breaking through. Undercutting forbidden
21.
(1) The method of mining by undercutting shall not be used when working in sand and gravel and in unconsolidated materials.
(2)
No vertical working face in unconsolidated materials shall have a height of more than 3 metres and where the thickness of material to be excavated exceeds 3 metres, the work shall be done in benches or at an angle of safety. Size of open-cast benches
22.
(1) Unless otherwise authorized in writing by the chief inspector, all open-cast workings over 30.5 metres in depth shall be worked in benches of not more than 19.8 metres in height and the width of the bench shall exceed the height of the face above.
(2)
Nothing in this section shall be construed to prohibit leaving, at the conclusion of operations, the wall rock at an angle of 60° with the horizontal. Removal of overburden
23.
Unless otherwise authorized in writing by an inspector, the operator shall cause to be removed all unconsolidated material such as clay, earth, sand and gravel lying within 1.8 metres from the edge of working faces in all pits and beyond this strip all overburden shall be sloped to the natural angle of repose. Prototype testing of vehicle brakes
24.
(1) A haulage truck or other vehicle having a total mass exceeding 50,000 kilograms, incorporating electric motorized wheel drive and using dynamic (electric regenerative) retardation as the principal means of braking, shall not be introduced at a mine in the province until a prototype vehicle has demonstrated that the service and emergency braking system can meet standards prescribed by the Chief Inspector of Mines.
(2)
The Chief Inspector of Mines shall prescribe the standards referred to in subsection (1) or may adopt standards recognized by other jurisdictions by notice published in the Gazette
.
(3)
Tests to demonstrate the performance of brakes on vehicles under this section shall
(a)
where done in the province, be witnessed by an inspector or a suitably qualified professional engineer and the results shall be filed with the mines inspection section; and
(b)
where done outside the province, be witnessed and certified by a suitably qualified professional or registered engineer who may be an official of a recognized testing agency and the certified results of the tests shall be filed with the mines inspection section. Annual testing of vehicle brakes
25.
(1) Tests, designed to prove the effective operation of service and emergency braking systems for all types of electric motorized wheel drive vehicles having a manufacturers rated total mass of 50,000 kilograms and other vehicles designated by an inspector shall be performed at each mine at least once in each year and at other times if required by an inspector.
(2)
During the conduct of service braking tests, the following criteria shall be met:
(a)
service braking systems only are to be tested and auxiliary retarding devices shall not be used but shall be available for application in an emergency;
(b)
vehicles being tested under this section shall be loaded to the greater of the manufacturers rating of total mass or to the loaded mass normal under operating conditions at the mine;
(c)
the test roadway shall have a uniform grade and it shall be straight and of adequate width for safety, the surface shall be well graded, hard packed and dry, and during the test period the roadway shall be isolated to prevent use by other vehicles;
(d)
an adequate emergency run out lane or run out areas shall be available;
(e)
at the conclusion of tests, the brakes shall be examined by a qualified mechanic who shall record the condition of the brakes.
(3)
The dynamic (electric regenerating) braking system or other retarding equipment used for the control of speed in downhill operation of all vehicles tested under this section shall be assessed and tested at the time of service brake tests by a qualified person who shall determine that the retarding equipment is calibrated and adjusted to provide the designed performance.
(4)
The results of each test certified by the manager or by a suitably qualified professional engineer shall be sent to the Chief Inspector of Mines, and a copy of the certified results shall be kept at the mine and shall be made available to an inspector if required.
(5)
A vehicle which fails to meet the prescribed test standards shall be taken out of service and shall not be put back in service until it has been reconditioned and has been successfully retested.
(6)
Where there are not more than 5 vehicles of a type in use at a mine, each vehicle shall be tested and assessed as required by subsections (1) and (2).
(7)
Where there are more than 5 vehicles of a type in use at a mine, the chief inspector may stipulate that annual tests and assessments are required for only a proportionate number of vehicles of each type to be tested and assessed.
(8)
The number of vehicles tested and assessed shall not be less than 5.
(9)
The selection of vehicles for test and assessment under this provision shall be by a process approved by an inspector. Vehicle specifications and modification
26.
(1) Complete specifications for all vehicles of the type referred to by sections 24 and 25 intended for use at a mine in the province shall be provided by the equipment supplier to the operator and to the Chief Inspector of Mines before the vehicle is brought to the mine and where there are subsequent modifications and changes in design that may affect the operating controls or stability of the vehicle, the complete record of modification and related specification change shall also be provided.
(2)
An operator or manager shall not make or permit to be made an alteration or addition to a vehicle of the type referred to by sections 24 and 25 unless the modification has been approved by the manufacturer or a suitably qualified professional engineer licensed to practise in the province, and where the changes affect the operating controls or stability of the vehicle, the approval of the Chief Inspector of Mines is also required to be obtained.
(3)
The Chief Inspector of Mines may, upon review of specifications or test data, restrict the operation of a vehicle intended for use or being used at a mine by limiting the speed, load or area of permitted use.
(4)
The Chief Inspector of Mines may require the installation of additional equipment that has been developed to control the safe operation of vehicles intended for use or being used at a mine. Engineering of haul roads
27.
(1) All haulage roads at a mine shall be engineered and built to permit the safe travel of all of the vehicles in regular service.
(2)
Engineering shall take into account operating speeds, maximum grades, as a function of stopping distance, sight distances, horizontal and vertical alignment, super elevation, cross slopes, vertical curvature, width, safety berms, drainage, surfacing and run out lanes with provision of inertia barrier and berms.
(3)
A traffic control plan shall be prepared for each haul road.
(4)
The plan shall show the grades, the location of run out lanes and inertia barriers and the location of all traffic control equipment and signs which are required to control the direction and speed of traffic and the safe operation of loaded and empty vehicles.
(5)
Plans to indicate the "as built" condition of each haulage road and the traffic control plan shall be kept up to date and shall be available to an inspector.
(6)
An inspector may restrict the operation of haulage trucks on a haul road that is inadequately engineered and may order changes in the traffic control plan. Operation of large haulage trucks
28.
(1) All haulage trucks and other vehicles designated by an inspector of over 50,000 kilograms total mass incorporating electric motorized wheel drive and using dynamic (electric regenerative) retardation as the principal means of controlling down grade operation shall
(a)
be operated so that at speeds above those required for manoeuvring, the mechanical air or air over hydraulic braking system is used only as an emergency brake to stop the truck;
(b)
be regulated so that operator controlled modulating devices, slippery road control, of the front service brakes are only supplied and used where the capacity of the fully modulated system is sufficient to meet the standard required under section 24 or paragraph 25(1);
(c)
at each 300 hours or less of operation, have static tests done to prove the operation and condition of the braking systems.
(2)
Each haulage truck shall have seat belts provided for the operator and any passenger seats which meet the requirement of S.A.E. recommended practice J.386(a), or subsequent revision, and shall incorporate a quick release device which shall be capable of being operated by a mittened hand.
(3)
There shall be posted in a prominent place in the cab of each haulage truck a sign in bold letters stating "REGULATIONS REQUIRE THE USE OF SEAT BELTS".
(4)
Each haulage truck shall be wheel-chocked whenever the truck is stopped unattended on grade.
(5)
The operator of each haulage truck shall test the operation of service and emergency brake systems when he or she first uses the truck on his or her operating shift.
(6)
The test shall take the form of an application of the brakes on the level or slight down grade and a determination that the system is in operating condition, and if the system is defective, the truck shall not be used.
(7)
The static tests required by paragraph (1)(c) shall involve simulated operation of the dynamic braking system, a measurement and recording of air and hydraulic brake actuating pressures in each component and a measurement and recording of disc thickness, pad condition and an assessment of drum brakes.
(8)
Static tests shall also be done whenever brake components are repaired or replaced and the system shall be proven during a test run.
(9)
The results of static tests shall be recorded in a log book that shall be available for examination by an inspector. Shaft manways
29.
(1) Every shaft exceeding 30.5 metres in depth shall be divided into 2 or more compartments, one of which shall be used as a passageway.
(2)
Subject to the approval of the chief inspector, the passageway shall be substantially partitioned from that part of the shaft in which material is hoisted.
(3)
Except in shafts inclined to less than 50° from the horizontal, the passageway shall be provided with strong securely fastened ladders inclined at not more than 80° from the horizontal in 7.6 metre lengths or less with rest platforms and in each platform an opening shall be left large enough to permit the passage of a worker's body and so placed as to prevent a worker from falling through. Shaft houses
30.
(1) A building covering the mouth of a shaft shall be isolated and covered with fire resistant materials.
(2)
All shaft houses shall be provided with adequate fire extinguishing apparatus conveniently located and conspicuously marked.
(3)
An office, storage room, repair shop or other construction shall not be permitted within a shaft house without the written permission of the chief inspector.
(4)
Blacksmith or drill sharpening shops shall not be installed within a minimum distance of 15.2 metres from the shaft house. Storage of inflammable materials
31.
(1) Inflammable substances shall not be left or stored in a building covering the mouth of a shaft.
(2)
Gasoline or oil shall not be stored within 30.5 metres of a shaft house. Sinking ladder
32.
During the sinking of a shaft, the lower part shall be provided with a moveable ladder, left in position during all the time workers are working at the bottom. Shaft covered while sinking
33.
During shaft sinking operations a set of doors to cover the sinking compartments shall be maintained at the collar or other parts of service of the shaft or winze and the doors shall be closed at all times when material is being loaded into or unloaded from a shaft conveyance at the point of service. Riding a loaded bucket
34.
A person shall not ride on a loaded bucket. Travelling in inclined shafts
35.
(1) When travelling is done in a conveyance in an inclined shaft at an angle of more than 60° with the horizontal, the conveyance must travel on rigid guides and be provided with guard rails, safety catches and a hood.
(2)
This section does not apply to shaft sinking operations. Safety cages to be used
36.
(1) In vertical shafts safety cages shall be provided for the raising and lowering of persons.
(2)
Safety cages shall be equipped with
(a)
safety catches of a type approved by an inspector and sufficiently strong to hold the loaded cage in case of rupture of the hoisting cable;
(b)
a hood made of 2 sheets of steel of sufficient thickness and covering the whole of the cage in such a way as to protect the men from falls of objects; and
(c)
metallic side casing with doors.
(3)
This section does not apply to shaft sinking. Doors of cages
37.
The doors in safety cages shall be so fitted that they cannot be accidentally opened and shall be closed when hoisting or lowering workers. Travelling with material
38.
A person shall not travel in a bucket, skip or cage which is loaded with explosives, pipe, drill steel, rails, timber or other materials or equipment except for the purpose of handling these objects. Fastening materials
39.
Pipe, drill steel, rails, timber or other materials or equipment shall be securely fastened when loaded in a bucket, skip or cage. Bucket to be stopped
40.
In a shaft or winze, in the course of sinking, the bucket, skip or cage shall not be lowered directly to the bottom if there are workers working there but shall be held at least 4.6 metres above the bottom and shall remain there until the signal to lower has been given by the workers on the bottom. Fencing of a shaft collar
41.
The top collar of all shafts or other mine openings shall be fenced in so as to prevent persons or material from falling accidentally into the shaft. Objects falling down shaft
42.
Whenever a tool or other object has fallen down a shaft, a complete inspection shall be carried out immediately. Gates at shaft entrances
43.
(1) Each entrance to a shaft shall be protected by a gate to be opened only to permit loading or unloading of the cage or skip.
(2)
During repair work or other operations the gate may be opened when necessary if precautions are taken for the security of the workers. Crossheads
44.
Unless the written permission of the chief inspector has been obtained, all crossheads used in shaft sinking operations shall be of metal construction of the "closed" type, and designed in such a way as to preclude the possibility of a swinging of the bucket in the timbered portion of the shaft. Counterweight
45.
Wherever a counterweight is used in a vertical shaft, it shall operate in a separate and safely enclosed compartment and the cable from the counterweight shall be attached to the drum of the hoist and not to the cage or skip. Head sheaves
46.
Head sheaves shall be of a diameter suitable to the rope in use and shall be carried on a shaft and bearings proportioned for their duty. Approach warning signal
47.
In every shaft or slope exceeding 182.9 metres in depth, adequate provision shall be made to warn the hoistperson of the arrival of the bucket, skip, cage or trip of cars at a point in the shaft or slope, the distance of which from the top landing place is not less than the equivalent of 3 revolutions of the drum of the hoisting engine. Depth indicator
48.
The hoisting engine in operating mines shall be provided with a reliable depth indicator and the indicator must be so placed as to be visible at all times by the hoistperson. Brakes and safety controls
49.
Every hoist operating at a rope speed of over 274.3 metres a minute shall be equipped with mechanical brakes and automatic safety controls. Brakes
50.
Every hoisting engine used in a mine must be provided with a brake independent of the power which runs the engine and the brake must work readily and be within easy reach of the hoistperson's seat. Hoist equipment, inspection and record book
51.
At least once in every week all parts of the hoisting equipment, in particular the hoisting engines and their brakes, the cables and their attachment, the cages, the skips, the guides, the safety catches and the signalling apparatus shall be carefully inspected by a competent person appointed by the manager who shall make his or her observations in a special book. Hoisting with animal power prohibited
52.
Hoisting from underground workings shall not be done with horse and pulley block. Foot operated brakes
53.
A hoist used for the raising or lowering of persons or used in shaft sinking shall not be equipped with a brake operated by means of the hoistperson's foot unless such brake is an auxiliary electrical device. New hoist installations
54.
In all new installations or modifications of existing installations, a hoist shall not be used for raising or lowering persons until all tests considered necessary are carried out to the satisfaction of the chief inspector. Interlocking brake and clutch
55.
The brake and clutch operating gear shall be so installed that it shall not be possible
(a)
to unclutch a drum unless the brake or brakes on the drum are applied; or
(b)
to release the brake or brakes until the clutch of the drum is engaged. Drum clutched
56.
When workers are in the cage or skip, the drum of the hoist must at all times be clutched to the engine. Exhaust brake
57.
A non-reversible steam or air hoist must be equipped with a suitable throttle-controlled exhaust. Bolts and fittings
58.
Such bolts and other fittings of the drums, brakes and clutches as might be a danger in the event of their becoming loosened shall be made secure by means of suitable locking devices other than lock washers. Hoistperson's log book
59.
At every shaft or slope a prescribed hoistperson's log book shall be kept in which the hoistperson shall record daily
(a)
a report of the working condition of the hoist including the brakes, clutches, interlocking devices between the brake and clutch, depth indicators and all other devices and fittings pertaining to the safe operation of the hoist;
(b)
a report of the working conditions of the signalling apparatus and a notation of any signals received by the hoistperson the accuracy of which he or she has questioned;
(c)
special instructions received involving the safety of persons and this entry shall be signed by the hoistperson and the person issuing the instructions;
(d)
a report of the working conditions as well as tests performed upon the operation of all overwind and underwind devices installed in conjunction with the hoist and if the daily tests of such overwind and underwind devices are conducted by a hoistperson operating on another shift, the hoistperson assuming duty shall note over his or her signature that he or she has examined the entry in the log book of the hoistperson who performed the tests;
(e)
a report of all abnormal circumstances in connection with the operation of the hoist or attachments to it and the abnormal conditions that have come to his or her knowledge in connection with the hoisting operations; and
(f)
a report of all trial trips made after a shut down of over 2 hours. Tests of overwind devices
60.
The hoistperson shall test all overwind devices at least once in every 24 hours and a report of the test shall be posted in the hoistperson's log book. Brakes to be tested
61.
The hoistperson shall after going on shift and before a conveyance is raised or lowered assure himself or herself that the brakes are in proper condition to hold the loads suspended on the corresponding drums by testing the brakes of the drums against the normal starting power of the engine or in the case of an electric hoist against the normal starting current and he or she shall not unclutch a drum of his or her hoist until the test has been made. Hoisting after stoppages
62.
When hoisting has been suspended for repairs or when hoisting has been suspended for another purpose for a period of more than 2 hours, a person shall not be raised or lowered until the bucket, cage or skip has made one complete trip up and down the working portion of the shaft and the trip has been recorded in the appropriate place in the hoistperson's log book. Underground hoists
63.
An underground hoist shall not be used for the raising or lowering of persons unless it is installed at a distance of at least 3 metres from a winze or shaft. Double-drum hoists
64.
In double-drum hoists
(a)
the cages or skips shall normally be placed in balance before workers are permitted to be hoisted;
(b)
the hoistperson shall not permit a person to enter a cage or a skip which is not in balance unless the cage or skip is chained or otherwise supported independent of the rope; and
(c)
the cage tender or the skip tender shall be notified by the hoistperson when a shaft conveyance is out of balance. Hoistperson's medical certificate
65.
A person shall not operate a hoist engine used in lowering or raising persons or in shaft sinking unless he or she
(a)
is the holder of a certificate issued within the last 12 months by a qualified medical practitioner stating that the holder has been examined and found free of mental or bodily infirmities and defects in his or her eyesight and hearing which in the performance of his or her duties may endanger the safety of the employees; and
(b)
has had at least one month's experience on a reversing hoist. Electric hoists
66.
All electric hoists used for hoisting or lowering persons shall be so installed that
(a)
one or more brakes shall be applied automatically to bring the hoist to rest in the event of power failure;
(b)
a circuit breaker equipped with overload, overspeed and low voltage protective devices will cut off the source of power and result in the automatic application of one or more brakes to bring the hoist to rest in the event of a predetermined overload, overspeed or low-voltage condition;
(c)
a suitable overwind device will cause the circuit to cut off the source of power and apply automatically one or more brakes to bring the hoist to rest before the cable attachment may reach the sheave;
(d)
a back-out switch, when closed, will permit backing out of an overwind position only;
(e)
an emergency switch located near the operator may be opened and cause the circuit breaker to cut off the source of power and apply automatically one or more brakes to bring the hoist to rest; and
(f)
an ammeter installed in front of the hoistperson will show the load on the hoist at all times. Auxiliary overwind
67.
Where an electric hoist is used for transporting workers in a conveyance, an auxiliary overwind device which will prevent the conveyance being hoisted to the dumping position shall be installed and placed in operation at all times when workers are hoisted. Fastening rope to drums
68.
Upon the drum of the hoist there shall be not less than 3 rounds of rope when the conveyance is at the lowest point in the shaft or slope from which hoisting is effected and the end of the rope shall be securely fastened. Rope attachments
69.
In clamping rope attachments
(a)
the thimble shall be at least 12 times the diameter of the rope in length and 8 times the diameter of the rope in width;
(b)
the clips shall be spaced not less than 6 times the diameter of the rope and a minimum of 5 clips shall be used. Rope certificate
70.
(1) A hoisting rope shall not be used in respect of which a certificate has not been issued by the manufacturer giving the following information:
(a)
name and address of the manufacturer;
(b)
diameter and circumference of the rope in centimetres;
(c)
weight per metre;
(d)
number of strands;
(e)
class of core;
(f)
number of wires in strand;
(g)
diameter of wires in decimals of a centimetre;
(h)
breaking stress of steel of which the wire is made;
(i)
estimated or actual breaking load of rope;
(j)
length of rope.
(2)
A certificate or a copy of the certificate shall be kept on hand at the mine and shall be exhibited to an inspector at his or her request. Used ropes
71.
A hoisting rope which has previously been in use shall not be put on anew except with the written permission of the chief inspector. Rope record book
72.
(1) A prescribed rope record book shall be kept for every mine and for each rope in use for hoisting or lowering persons.
(2)
The following information shall be recorded and the manager shall forward without delay the prescribed sheets of the record book to the minister:
(a)
its type and construction including tests made upon the new rope or its constituent wires;
(b)
the name and address of manufacturer;
(c)
the date rope was put into service or taken out of service and a record of the kind of service;
(d)
the maximum load;
(e)
the dates of shortening and the results of tests which may have been made;
(f)
nature and date of an accident to rope;
(g)
date of a reason for removal. Rope not to be spliced
73.
A rope which has been spliced shall not be used for hoisting purposes except with the permission of the chief inspector. Rope dressing
74.
Every hoisting rope shall be treated with a suitable rope compound as often as necessary at least once a month. Factor of safety of ropes
75.
(1) For the purpose of this section, the factor of safety of a rope, when new, means the number of times the breaking strength of the rope is greater than the total weight supported by the rope at a definite place in the rope and the breaking strength of a rope means the breaking strength of the rope as shown in the manufacturer's certificate.
(2)
Every hoisting rope in a vertical shaft when newly installed shall have a factor of safety of not less than 8.5 at the end of the rope where it is attached to the shaft conveyance and where the total weight consists of the combined weight of the conveyance plus the weight of the material hoisted and in addition, each hoisting rope shall have a factor of safety of not less than 5 at the head-sheave when the rope is fully let out, where the total weight supported by the rope consists of the material hoisted plus the weight of the conveyance plus the weight of that portion of the rope which extends from the head-sheave to the conveyance.
(3)
Every hoisting rope in an inclined shaft when newly installed shall have a factor of safety of not less than 8.5 at the end of the rope where it is attached to the shaft conveyance and where the total weight supported is determined by multiplying the weight of the conveyance plus the weight of the material hoisted by the sine of the maximum angle which the inclined shaft makes with the horizontal, and in addition each hoisting rope shall have a factor of safety of not less than 5 at the head-sheave or at the hoist drum where no head-sheave is used when the rope is fully let out and where the total weight supported is determined by multiplying the weight of the conveyance plus the weight of the material hoisted plus the weight of that portion of the rope which extends from the head-sheave or the hoist drum to the conveyance by the sine of the maximum angle which the inclined shaft makes with the horizontal.
(4)
Every hoisting rope in a slope when newly installed shall have a factor of safety of not less that 6 at the head-sheave or at the hoist drum where no head-sheave is used for all positions of the conveyance on the slope and where the total weight supported is determined by multiplying the weight of the conveyance, plus the weight of the material hoisted, plus the weight of that portion of the rope which extends from the head-sheave or the hoist drum to the conveyance by the sine of the maximum angle which the slope makes with the horizontal.
(5)
A hoisting rope shall not be used when
(a)
at a point in the rope, the existing strength has decreased to less than 90% of the original strength of the rope;
(b)
the extension of a test piece has decreased to less than 60% of its original extension when tested to destruction;
(c)
the number of broken wires in a section of the rope equalling the length of one lay of the rope exceeds 6;
(d)
marked corrosion occurs. Rope testing
76.
When a hoisting rope is installed and every 6 months thereafter a piece of the rope not less than 2.4 metres in length shall be cut off the lower end from a position above the detachment and the piece so cut off shall be attached to a suitable board and retained at the mine and made available to the chief inspector or an inspector may instruct the manager to send the test piece to a rope testing laboratory approved by him or her and to supply the chief inspector with a copy of the certificate. Haulage clearances
77.
(1) On every level on which mechanical haulage is employed, a clearance of at least 45.7 centimetres shall be maintained between the sides of the level and the car or there shall be a clearance of 61 centimetres on one side.
(2)
The clearances mentioned in subsection (1) may be omitted if they are replaced by clearly marked refuges slashed in the walls of the drift at intervals of less than 30.5 metres. Riding on cars
78.
(1) A person shall not ride upon or against a car loaded with ore in underground workings.
(2)
A person shall not travel in a conveyance which is loaded with explosives, pipe, drill steel, rails, timber or other materials or equipment except for the purpose of handling these objects.
(3)
These regulations do not apply to train crews in mechanical haulage. Frog point
79.
Every frog point in a track for mechanical haulage shall have a wedge block of wood or metal unless the construction of the point precludes the hazard of a person catching his or her foot. Underground vehicles
80.
(1) Every locomotive engine, trolley or self-propelled or mobile vehicle equipped either with tracks or wheels and running on rails or otherwise, which is used underground in or in connection with a mine or intended to be so used, shall be equipped with
(a)
a warning device or apparatus such as a gong, bell, whistle or horn designed to make or emit sounds;
(b)
lights on the front and rear;
(c)
seat belts or restraining harness for the operator and each passenger and an overhead roll bar designed to prevent injury to the operator or passengers from collision, upset or overturn of the vehicle.
(2)
An operator or manager shall not install, use or operate or permit or allow the equipment to be installed, used or operated on the vehicle without first submitting specifications of it to the Chief Inspector of Mines and before the approval in writing of the specifications by the Chief Inspector of Mines.
(3)
A warning device or apparatus, seat belt, restraining harness or roll bar, which in the opinion of the Chief Inspector of Mines is, or is likely to be, or become defective or inadequate by reason of materials or components or methods used in the manufacture, packing or packaging or transport of it, or the conditions under which it may be operated or used shall not be installed on or in or attached to a vehicle or used contrary to or in a manner at variance with an order of the Chief Inspector of Mines.
(4)
An operator or manager shall not move or permit or allow a vehicle to be moved
(a)
underground or at night aboveground unless the lights on the vehicle are operable and switched on; and
(b)
unless a warning sound is first made by means of the warning device or apparatus.
(5)
An operator or manager shall not make an alteration in or addition to the vehicle or permit or allow it to be made without first submitting specifications of it to the Chief Inspector of Mines and before the approval in writing of the specifications by the Chief Inspector of Mines.
(6)
An operator or manager shall not use or operate or permit or allow the vehicle to be used or operated during the course of or upon completion of an alteration of or addition to the same until the vehicle has been inspected by an inspector. Vehicle prohibited underground
81.
An operator or manager shall not bring or take or permit or allow to be brought or taken underground in or in connection with a mine any self-propelled or mobile vehicle intended to be or capable of being used or operated in such mine or use or operate the vehicle without first submitting specifications of it to the Chief Inspector of Mines and before the approval in writing of the specifications by the Chief Inspector of Mines. Removal of vehicle from mine
82.
An operator or manager shall not remove or permit or allow to be removed from a mine a vehicle intended to be or capable of being used or operated underground in or in connection with a mine elsewhere in the province without giving notice in writing to that effect to the Chief Inspector of Mines with particulars to identify the vehicle and before the approval in writing of the removal or the intended use or operation by the Chief Inspector of Mines. Derails on inclined planes
83.
(1) The operator shall install an effective block, automatic derail or safety switch at the top of each inclined place to prevent skips or cars from accidentally running down but such an installation is not required when the skip or car remains on the chain or cable.
(2)
The operator shall provide a blind end switch or an automatic or similarly effective derail at a safe place near the bottom or near a sharp curve to stop the runaway cars. Traffic control
84.
Where more than one locomotive or train of cars is operating on a haulageway suitable and adequate precautions shall be taken to prevent collision and such precautions shall include positive and timely warning to the locomotive operators that the track switches being approached are "open". Signalling apparatus
85.
In shafts, slopes, inclines, quarries and other excavations more than 15.2 metres deep, signals to set in motion machinery used for hoisting material or for travelling shall be transmitted to the hoistperson by a suitable signalling apparatus but in operations carried on with cable derricks the chief inspector may approve of the transmission of signals by motion of the hands. Return signals
86.
Where an electric signalling system is installed in shafts or slopes
(a)
the system shall be so arranged that the hoistperson may return the signal to the person giving the signal;
(b)
where possible, the hoistperson shall return all signals;
(c)
in shaft sinking, the signalling device shall be so located that the signals may be seen or heard by workers at the bottom of the shaft. Code of signals
87.
(1) In signalling elsewhere than in slopes, no signal other than the following signals shall be used:
(a)
one bell, stop at once if in motion;
(b)
one bell, hoist;
(c)
2 bells, lower;
(d)
3 bells, warning workers about to ascend or descend;
(e)
4 bells, blasting signal;
(f)
9 bells, danger signal in case of fire or other danger.
(2)
The signal referred to in paragraph (1)(d) must be given before workers enter the cage.
(3)
The cage must not be moved before the complementary signal to hoist or to lower has been given.
(4)
The hoistperson must answer the signal referred to in paragraph (1)(e) by hoisting the cage or skip a short distance and lowering it slowly, upon the next signal, one bell he or she hoists at once.
(5)
The station shall be notified where danger exists. Special signals
88.
Special signals may be used with the written approval of an inspector. Signal code to be posted
89.
A legible copy of the code of signals shall be posted
(a)
at the proper distance in front of the hoistperson;
(b)
at the bottom of the shaft or slope; and
(c)
at all stations. Signals given by authorized persons only
90.
(1) The authority to signal hoist movements shall be limited to as few persons as possible, consistent with the safe and economical operation of a mining property and except for cage tenders, authorized trammers and deckpersons, every person must have written authority from the manager or superintendent to signal the movement of the hoist and a list of the persons shall be kept and shown to the inspector when requested.
(2)
Subsection (1) does not apply to persons working and giving signals before the movement of the hoist on underground level haulage or to persons instructed to signal in the presence of an authorized signaller or in the case of an accident.
(3)
The cage tender or authorized trammer has all necessary authority to prevent crowding or other disorder in the vicinity of the shaft or slope.
(4)
Subsection (1) does not apply to shaft sinking operations. Notices showing permitted load
91.
A notice showing clearly the number of persons allowed to ride on and the weight allowed to be loaded on the conveyance shall be posted at the collar of the shaft or slope and a person shall not obstruct the enforcement of the notice. Approval required
92.
An internal combustion engine may not be operated underground unless approval has first been obtained in writing from the chief inspector for each and every engine. Exhaust gases
93.
The chief inspector may suspend or revoke the approval given under the provisions of these regulations for an internal combustion engine if the engine in test operation or regular operation produces noxious exhaust gases in excess of the amounts stated as follows:
(a)
carbon monoxide content in undiluted exhaust of 0.25% by volume;
(b)
carbon monoxide content of the atmosphere adjacent to the engine of 0.01% by volume;
(c)
oxides of nitrogen content of the atmosphere adjacent to the engine of 0.0025% by volume;
(d)
aldehyde content of the atmosphere adjacent to the engine by 0.001% by volume. Oxygen content of atmosphere
94.
The chief inspector may withhold, suspend or revoke the approval for operation of an internal combustion engine underground if the oxygen content of the general atmosphere of the mine is less than 20% by volume. Health, fire and explosion hazards
95.
The chief inspector may withhold, suspend or revoke the approval for operation of an internal combustion engine underground if in the opinion of an inspector such operation would create
(a)
a health hazard to workers;
(b)
a fire hazard;
(c)
an explosion hazard. Positive ventilation required
96.
Approval for the operation of an internal combustion engine underground may not be given unless positive mechanical ventilation of the mine is employed and the volume of air supplied by the ventilation system to every area where the engine may be operated shall not be less than the greater of
(a)
2.1 cubic metres per minute per rated brake horsepower of the internal combustion engine or engines in operation plus the normal requirements for all other purposes; or
(b)
an amount required to maintain the atmospheric conditions set out in sections 93 and 94. Scrubber
97.
Every internal combustion engine operated underground shall be equipped with an approved type of scrubber and except with the permission of the chief inspector in writing the scrubber shall be of the wet type and shall contain only plain fresh water which shall be changed at least once in each 8 hour shift or as often as may be required to maintain the temperature of the exhaust gases below 82.2° Celsius. Maintenance and records
98.
For each internal combustion engine operated underground, the manager shall cause a log book to be kept in which the following shall be recorded:
(a)
at least once in each 8 hour shift
(i)
the carbon monoxide content of the atmosphere taken adjacent to the engine,
(ii)
the carbon monoxide content of the exhaust gases at the scrubber,
(iii)
the time of each change of the liquid in the scrubber,
(iv)
the remarks of the engine operator as to the operating condition of the engine and the brakes,
(v)
the signature of the engine operator;
(b)
at least once in each week
(i)
the condition of the scrubber connections,
(ii)
the condition of the brakes,
(iii)
the volume of air supplied by the ventilation system to the most remote point where the engine is operated,
(iv)
the location of the point at which the air was measured in compliance with subparagraph (iii),
(v)
the signature of the person or persons making the entries in the log book;
(c)
at least once in each 6 months
(i)
the results of a complete analysis of the atmosphere at the exhaust port of the scrubber, the atmosphere adjacent to the engine, a remote point in the area of operation of the engine,
(ii)
the signature of the chief mechanical supervisor of the mine;
(d)
the results of the periodical checks made at the times and in accordance with the recommendations of the manufacturer of the engine supported by the signature of the person or persons performing the work. Fuel
99.
(1) A substance shall not be used in a mine as fuel in or for an internal combustion engine of the compression ignition type unless it conforms to the specification 3-GP-6 made or set by the Canadian Government Specifications Board and any modifications or revisions of it for the place or region designated in the specification.
(2)
Fuel with a heavy asphalt base shall not be used in any underground operations. Fire protection
100.
(1) Each internal combustion engine shall be equipped with a suitable hand operated fire extinguisher which shall not produce noxious fumes when being used on a fire.
(2)
For the purpose of this section carbon dioxide is not considered to be a noxious fume. Precautions against accumulation of carbon monoxide
101.
At least once in every 6 months and as often as may be considered necessary by an inspector, 3 samples of air shall be taken from the uppermost recesses of the workings where the internal combustion engine is operating and once in each year, 3 samples shall be taken from the uppermost and accessible underground recesses of the mine where the internal combustion engine is operating and in both cases the samples shall be sent to the chief inspector. Main fans
102.
(1) Where possible, main mine fans shall be on the surface at intake or exhaust port or ports.
(2)
Structures containing main mine fans shall be fireproof. Fans to be reversible
103.
(1) Main fans, whether underground or on the surface, shall be reversible from the surface.
(2)
In the event of a mine fire ventilating fans may be reversed only by a direct order from the manager or his or her appointed representative. Ventilation of workings
104.
(1) The ventilation in every mine shall be such that the air in all its workings that are in use or are to be used by workers is free from dangerous amounts of noxious impurities, including dust and contains sufficient oxygen to ensure the health of anyone employed in the mine.
(2)
In any mine workings where subsection (1) cannot be complied with by natural ventilation, means for mechanical ventilation shall be provided and kept in operation until the workings have been abandoned or until satisfactory natural ventilation is secured. Air tests
105.
(1) Every operator and manager shall on the request of the chief inspector carry out such tests of the air in all workings that are in use or to be used by workers as the chief inspector may require and shall report to the chief inspector in writing the results of such tests.
(2)
Every request of the chief inspector made under subsection (1) shall be made by way of notice in writing and the tests required to be carried out by the operator or manager shall be specified in the notice. Radiation and exposure to radiation standards
106.
(1) For the purpose of this section, a "working" level" is defined as a combination of radon daughters in one litre of air which will result in the ultimate emission of 1.3 x 105
million electron volts of potential alpha energy.
(2)
The numerical value of the "working level" is derived from the alpha energy released by the total decay of short-lived radon daughter products in equilibrium with 100 picocuries of radon 222 per litre of air.
(3)
A working level month is defined as the exposure received by a worker breathing air at one working level concentration for 4 1/3 weeks of 40 hours each.
(4)
Occupational exposure to radon daughters in underground mines shall be controlled so that no individual will receive an exposure of more than 1.8 working level months in a consecutive 3 month period and no more than 3.6 working level months in any consecutive 12 month period.
(5)
Actual exposures shall be kept as far below these values as practicable, provided that mines with conditions that would result in an exposure of more than 3.6 working level months but not more than 12 working level months in any 12 consecutive months will be considered in compliance up to January 1, 1969 if an effective program is established and carried out to
(a)
protect the health and safety of employees exposed to these conditions; and
(b)
reduce the concentration to the 3.6 working level months standard by
(6)
Records of environmental concentrations in the various parts of the mine and of the time spent in each area by each person involved in underground work shall be established and maintained.
(7)
These records shall be in sufficient detail to permit calculations of the exposures in units of working level months of the individuals and shall be available for inspection by
(a)
the worker himself or herself to whom the calculations personally relate;
(b)
an inspector appointed under the Mines Act
; and
(c)
the minister responsible for health in the province or his or her authorized representative. Ladderways
107.
(1) The operator shall build and maintain in good order travelways for the workers and, where necessary, shall provide ladders or stairways.
(2)
Ladders and stairways having a slope in excess of 45° from the horizontal shall have landings at every 9.1 metres or less unless otherwise authorized or prescribed in writing by an inspector. Ladders
108.
(1) The rungs of all ladders shall be regularly spaced at not more than 30.5 centimetres centre to centre and shall not be less than 10.2 centimetres from the wall.
(2)
All ladders shall be extended to a height of one metre above each platform except where strong hand rails are provided. Emergency signs
109.
Legible signs showing the way to emergency exits shall be posted in prominent places underground and all workers shall be instructed as to the location of auxiliary exits. First aid equipment
110.
(1) In addition to the first aid supplies required in the first aid section of the Occupational Health and Safety Regulations
the operator of every mine shall provide and maintain suitable and properly constructed stretchers for the proper handling and transporting of persons who are injured and such stretchers and other necessary first aid supplies shall be kept at suitable locations where they may be readily available for immediate use.
(2)
In addition to the first aid services required in the first aid section of the Occupational Health and Safety Regulations,
the manager of a mine that is operated on a shift basis and where the number of workers on each shift normally exceeds 15 shall ensure that a person properly trained in first aid is readily available during all working hours.
(3)
Each mine shall provide a suitable means of communication by which emergency services are made available.
(4)
Facilities approved by the chief inspector shall be available to each mine for the evacuation of injured persons to hospital. Training for rescue equipment 111. (1) In this section "commission" means the Workplace Health, Safety and Compensation Commission established under the Workplace Health, Safety and Compensation Act . (2) The operator and manager of a mine shall cause such workers and supervisors to be trained in the use and maintenance of mine rescue equipment as the commission considers necessary and the course of training to be followed shall be one approved by the commission. (3) The operator of a mine shall provide and maintain the mine rescue equipment as the chief inspector considers necessary and this equipment shall be stored at an approved location. (4) The manager of a mine shall be responsible for the supervision and direction of mine rescue crews in all mine rescue and recovery operations conducted at the mine. (5) The manager of a mine shall immediately notify the chief inspector of circumstances necessitating rescue and recovery operations conducted by rescue crews wearing masks or self-contained breathing apparatus. (6) Each person completing an approved course in the use and maintenance of mine rescue equipment may present himself or herself for examination as to his or her competency before an examination board consisting of an employee of or a person appointed for the purpose by the commission and an official of the mine at which he or she is employed.
(7)
The commission may issue a certificate of mine rescue training to each person complying with the requirements of the examination board referred to in subsection (6). Dams and bulkheads
112.
(1) Every dam or bulkhead and its location shall be clearly shown on the mine plan and no such dam or bulkhead shall be erected without the prior permission of the chief inspector.
(2)
This section does not apply in the case of a small structure less than one metre in height used solely for diverting the ordinary level drainage and which does not impound an appreciable volume of water or in the case of a structure 1.8 metres high of a type approved by the chief inspector. Precautions against mine fire
113.
(1) All inflammable refuse underground shall be removed from the workings at least once a week and brought to the surface and there disposed of in a suitable manner.
(2)
All timber not in use in a mine shall as soon as practicable be taken from the mine and shall not be piled up and permitted to decay in the mine.
(3)
Oil and grease kept underground shall be contained in suitable metal receptacles and the amount so kept shall not exceed the requirements for 7 days except where a standard shipping container contains more than 7 days supply it shall be permissible to store up to but not more than 14 days supply underground. Masks in underground hoist-rooms
114.
The operator shall provide in every underground shaft hoist-room a gas mask or self-contained breathing apparatus of a type approved by the chief inspector. Underground fires prohibited
115.
A person shall not build, set or maintain a fire underground unless he or she has received authorization from the manager and suitable instruction for doing so and only after the necessary firefighting equipment has been placed close at hand. Underground structures
116.
All underground rooms and enclosures shall be so located, constructed and maintained as to reduce fire hazards to a minimum. Fire doors
117.
The manager shall, where necessary, cause to be installed a sufficient number of fire doors underground in order to cut off the shaft from other workings of the mine and he or she shall ensure that these doors are kept in good working order at all times. Firefighting equipment underground
118.
The operator shall provide and maintain suitable firefighting equipment underground. Fire hazard area
119.
(1) If in the opinion of the chief inspector a grave fire hazard exists in a mine, he or she may designate the mine or part or parts of the mine as a "fire hazard area".
(2)
A person shall not smoke or use or have in his or her possession open flame lamps, matches or other means of producing heat or fire in a "fire hazard area" without the permission of the chief inspector and under such conditions as he or she may consider proper.
(3)
All "fire hazard areas" shall be properly indicated by suitable signs and the operator shall cause the signs to be installed and maintained as long as the area is designated as a "fire hazard area". Firefighting equipment in all buildings
120.
The operator shall provide suitable firefighting equipment in all buildings including head frames where a fire may endanger the lives of the workers. Inspection of firefighting equipment
121.
A person authorized by the manager shall make a thorough monthly inspection of all firefighting equipment and shall make a report in writing to the manager that the inspection has been made and the report shall set out the condition of the equipment. Protection when torches used
122.
Where operations involving the use of acetylene, kerosene, gasoline or other torches are conducted in underground workings or in a building, the loss of which by fire may endanger the mine entrance, the operator shall adopt and rigidly adhere to suitable measures for protection against fire. Storage of calcium carbide
123.
(1) Calcium carbide shall not be taken underground except in suitable individual containers and only in sufficient quantity for the day's use.
(2)
Calcium carbide shall be stored on the surface only in a suitable place and in its original container.
(3)
An acetylene generator shall not be taken underground.
(4)
This section does not apply to the usual miner's carbide lamp. Storage of gas containers
124.
(1) Cylinders of oxygen or acetylene used underground must be sent to the surface when exhausted.
(2)
Cylinders of oxygen must be stored separately from cylinders of acetylene and must be stored upright in a well ventilated and dry place.
(3)
Cylinders of oxygen or acetylene must not come in contact with stoves, furnaces or a source of direct heat.
(4)
Cylinders of oxygen or acetylene must not be stored in the same place as inflammable or explosive materials. Toilet
125.
The operator shall provide in every treatment plant or workshop a toilet for every 25 workers. Equipment in mills, etc.
126.
In all mills, smelters and metallurgical works the operator shall
(a)
place or cause to be placed clearly visible warning signs where there is danger to the workers from poisonous or harmful reagents or substances;
(b)
provide in a conspicuous and convenient place antidotes and washes for treatment of injuries resulting from such poisonous or harmful reagents or substances;
(c)
provide rubber gloves to all workers handling cyanide salts or solutions;
(d)
provide a supply of drinking water stored in such a way as to prevent its contamination; and
(e)
provide facilities for workers to wash their faces and hands. Storage of cyanide
127.
Cyanide shall not be stored in a place or transported in a manner whereby there is danger of its coming into contact with any acid substance. Sanitation in mine workings
128.
The operator shall provide the underground workings of every mine with sufficient and suitable sanitary conveniences in accordance with the following:
(a)
where the number of persons employed on a shift does not exceed 100, there shall be one sanitary convenience for every 25 or fewer persons;
(b)
where the number of persons employed on any shift exceeds 100 there shall be one additional sanitary convenience for every 50 persons or portion of it over the first 100. Maintenance of sanitary conveniences
129.
The operator shall ensure that the sanitary conveniences referred to in section 128 are
(a)
kept clean;
(b)
adequately supplied with chloride of lime, sawdust, fine ash or other suitable absorbent;
(c)
removed and cleaned regularly; and
(d)
conveniently placed with reference to the number of men or women employed in the different levels. Dry houses
130.
In every mining operation where the number of employees underground exceeds 10 a shift and in surface operations as may be required by the chief inspector, the operator shall at the surface and in a place approved by the chief inspector
(a)
provide a dry house sufficiently large to accommodate the total number of employees where workers can wash themselves, change and dry their clothes;
(b)
ensure that the dry house is properly lighted, well ventilated, adequately heated and maintained in clean condition; and
(c)
equip the dry house with a supply of hot and cold water and the necessary basins, shower baths, etc., for washing and such other requirements of provision or use as considered to be necessary by the chief inspector. Dust exposure occupations
131.
(1) In this section
(a)
"dust-exposure occupation" means
(i)
underground work,
(ii)
surface work in ore or rock-crushing processes other than an operation where the ore or rock is crushed in water or a chemical solution, or
(iii)
such other work as the chief inspector designates as a dust-exposure occupation in accordance with subsection (2);
(b)
"medical certificate" means a medical certificate issued by a medical examiner under and in accordance with this section;
(c)
"medical certificate in good standing" is a medical certificate which is in good standing in accordance with this section; and
(d)
"medical examiner" means a medical examiner appointed by the Minister of Health to carry out medical examinations for the purpose of this section.
(2)
For the purpose of this section, the chief inspector may designate as a dust-exposure occupation work other than that referred to in subparagraphs (1)(a)(i) and (ii) which is carried on at the surface of a mine or in a pit or quarry.
(3)
An applicant for employment in a dust-exposure occupation shall present himself or herself to a medical examiner for a physical examination and for the purpose of having a medical certificate issued to him or her shall provide the medical examiner with such information and submit to such physical examination as the medical examiner requires of him or her.
(4)
A medical examiner to whom an applicant presents himself or herself under subsection (3) shall
(a)
give that applicant a complete physical examination which shall include an x-ray of the applicant's chest; and
(b)
complete, sign and issue to the applicant a medical certificate in the form approved by the minister if the applicant at the time of the medical examination
(i)
is free from active disease of the respiratory organs,
(ii)
has, insofar as the medical examiner can determine, no history of active tuberculosis during the immediately preceding period of 5 years, and
(iii)
is, in the opinion of the medical examiner, otherwise fit for employment in a dust-exposure occupation.
(5)
The holder of a medical certificate which has been issued under subsection (4) shall in the place provided on it endorse the certificate with his or her usual signature and the certificate is not in good standing unless it is so endorsed.
(6)
The holder of a medical certificate which has been issued under subsection (4) shall keep that certificate in good standing while he or she is employed in a dust-exposure occupation and for that purpose the holder shall before the expiration of the medical certificate which he or she holds present himself or herself to a medical examiner for a physical examination and deliver his or her medical certificate to the medical examiner for renewal in accordance with subsection (7).
(7)
A medical examiner to whom the holder of a medical certificate presents himself or herself under subsection (6) shall give the holder a complete physical examination which shall include an x-ray of his or her chest and if the holder is free from tuberculosis of the respiratory organs the medical examiner shall renew the medical certificate by signing it and noting on it the date of renewal and the date which shall be one year after the date of the renewal, before which the certificate shall be renewed again.
(8)
A medical certificate is in good standing if the holder of it has endorsed it in accordance with subsection (5) and
(a)
if not longer than one year has elapsed since it was last signed by a medical examiner;
(b)
if not longer than 15 months have elapsed since it was signed by a medical examiner where the physical examination required under this section is to be conducted by a travelling medical examiner; or
(c)
even though the holder of it has failed to have it signed during the periods referred to in paragraphs (a) and (b) if that failure was because of illness or other circumstances beyond his or her control and if he or she holds a certificate from a physician, other than a medical examiner as defined in this section, who attended him or her during that illness certifying to the fact of that illness or some evidence in writing of those other circumstances.
(9)
Subject to this section, a mine operator shall not employ in a dust-exposure occupation a person who does not hold a medical certificate which is in good standing.
(10)
Subsection (9) does not apply to
(a)
an applicant for employment in a dust-exposure occupation who
(i)
was not able to get a medical certificate because a medical examiner was not available to give him or her a medical examination in accordance with this section, and
(ii)
has not previously been engaged in a dust-exposure occupation without a medical certificate; or
(b)
a person who is engaged in a dust-exposure occupation for a total period of 50 hours or less in each month, but a person referred to in paragraph (a) shall not be engaged in a dust-exposure occupation without a medical certificate for more than 3 months from the date his or her employment in the dust-exposure occupation began.
(11)
The holder of a medical certificate who is engaged in a dust-exposure occupation shall tender his or her certificate to his or her employer who shall endorse on it in the space provided the record of employment of the holder with that employer.
(12)
The manager or superintendent of the mine in which or in connection with which the holder of a medical certificate is employed shall, for the purpose of making the endorsements required under subsection (11), require the holder of a certificate to tender the certificate to him or her and may have the certificate in his or her custody during the period of the holder's employment in or in connection with the mine.
(13)
Every mine operator who employs persons in a dust-exposure occupation other than persons to whom subsection (10) applies shall keep a record of the medical certificates held by his or her employees and an inspector may examine and make extracts of that record.
(14)
A manager or superintendent who has a medical certificate in his or her custody under subsection (12) shall return that certificate to the holder of it upon the termination of the holder's employment or not later than one month before the date before which the certificate is to be renewed, whichever is the earlier date.
(15)
Nothing in this section shall prevent an operator from requiring an employee or applicant for work in a dust-exposure occupation to comply with or satisfy the medical, physical and other employment or pre-employment standards of the operator in addition to complying with this section.
(16)
A miner
(a)
who has been continuously employed since
(b)
who may be unable to pass the miner's medical examination or x-ray program, while still being physically capable of working at his or her current occupation, shall be able to continue employment in that occupation until a committee of medical referees constituted by the Workers' Compensation Commission considers him or her incapable of continuing in that occupation. Safety and sanitary precautions
132.
The operator shall ensure that all buildings are built and kept in such a manner as to secure the safety of employees and are well lighted and ventilated and the operator shall take steps to ensure removal of noxious gases and dusts from the building. Inspector to be notified
133.
The operator shall notify an inspector before any major construction of or major alterations to any treatment plant or workshop is undertaken and the inspector may withhold permission for such construction or alterations until they are formally approved by the chief inspector. Exits and stairways
134.
The operator shall ensure that
(a)
all exits, hallways and stairways or buildings are adequate to permit rapid egress of all employees and are not used for storage purposes;
(b)
all stairs exceeding 1.5 metres in height are provided with a substantial handrail;
(c)
all runways and stagings more than 1.5 metres from the floor, used for oiling and other purposes, are provided with hand railings; and
(d)
every opening in a floor is effectively guarded. Storage of oily waste
135.
Oily waste and rags must be kept in closed metallic containers carrying a notice on which is written the word "inflammable" and the containers shall not be placed in or near a stairway. Layout to ensure safety
136.
Machinery in buildings shall be arranged in such a way as to ensure the maximum of safety to workers. Guards on machines
137.
Unless so situated as to prevent a person coming into accidental contact with them, all projecting moving pieces and other dangerous parts of machinery, especially connecting rods, fly-wheels, gears, pulleys, belts and shafting shall be equipped with suitable guards, casings or railings. Grinding wheels
138.
Every power grinding wheel shall be provided with a hooded guard of sufficient strength to withstand the shock of the wheel bursting. Moving belts
139.
Except on very slow moving pulleys, the direct mounting and shifting of belts by hand is forbidden. Masks
140.
Where applicable, the operator shall supply to workers masks of a type approved by the chief inspector and designed to protect workers who are exposed to dust, gas and irritating and dangerous fumes. Cleaning of masks
141.
Every worker shall wash or clean his or her mask every day and the operator shall renew a mask in whole or in part whenever necessary. Exchanging of masks
142.
No worker shall allow another worker to use his or her mask or shall change his or her mask for the mask of another. Masks to be sterilized
143.
The operator shall at least once a week sterilize all masks in use. Masks to be inspected
144.
(1) The operator shall appoint a competent person to be in charge of all masks who shall inspect all masks regularly.
(2)
The inspection of masks shall include cleanliness, the attachment of the filter, possible defects in the parts of the mask, the fitting of the mask to the face, the head and the body of the worker, the operation of the valves and other accessories.
(3)
An inspection shall be made at least once a month for dust masks and once a week for apparatus designed for poisonous substances or when the worker reports a defect in his or her mask. Defective masks to be reported
145.
As soon as a worker notices that his or her mask is defective, he or she shall report to the manager who shall take measures to repair or replace the mask. Storage of masks
146.
Masks must be kept in a closed place protected against dust while they are not in use. Boilers and pressure vessels
147.
In these regulations
(a)
"boiler" means a boiler as defined in the Public Safety Act
;
(b)
"pressure vessel" means a pressure vessel as defined in the Public Safety Act
. Inspection of boilers
148.
(1) The minister shall require an annual inspection of each boiler and pressure vessel to be made in accordance with and by an inspector appointed under the Public Safety Act
and the inspector shall make a written report of this inspection to the minister.
(2)
The minister shall require all operators of boilers and pressure vessels to possess a certificate of competency in accordance with the Public Safety Act
. Distance from shaft house
149.
A person shall not install or permit a steam boiler to be installed in a building situated less than 15.2 metres from a shaft house. Suitable clothing and safety equipment
150.
Every person employed at a mine shall wear
(a)
an approved protective head covering in all work areas in which hazard to the head exists;
(b)
approved boots or shoes having protective toe covering designed to protect the wearer from foot injury at work;
(c)
gloves when employed at handling materials that are likely to cause cuts and abrasions of the hand;
(d)
suitable eye protective equipment when employed at work where hazards to the eyes exist;
(e)
suitable devices to protect hearing when exposed to excessive noise;
(f)
respirators of a type approved for use in the concentration of noxious gas or dust encountered;
(g)
clothing of such design as will not constitute a hazard to the wearer at work; and
(h)
other protective clothing as required. Wearing rings forbidden
151.
Rings shall not be worn on the fingers of workers while engaged in any operation where power driven machines are being operated. Jurisdiction
152.
Sections 151 to 184 apply to explosives including detonators and blasting caps stored or used in or about mines and quarries or on or in any premises occupied or used in connection with them but sections 153, 154, 156 and 167 do not apply to quarries operated solely for the purpose of constructing or maintaining public works and utilities such as roads, wharves, breakwaters and causeways. Permitted magazines
153.
(1) All explosives including detonators or blasting caps shall be stored while on the surface in suitable buildings called permitted magazines.
(2)
No permitted magazine shall be erected or maintained at a mine except with the written permission of the chief inspector and the site and type of structure of the magazine must be approved by the chief inspector.
(3)
The written permission of the chief inspector shall be posted in the magazine to which it applies and is valid for one calendar year.
(4)
The permission of the chief inspector is not required for the erection and use of maintenance magazines such as packing houses, thaw houses, buildings and receptacles in which up to 68 kilograms or a day's supply of explosives are placed and handled in the course of their preparation and distribution for use in a mine.
(5)
Every magazine shall be located in accordance with the Revised British Table of Distances except where conditions are such that it is imposable to locate the building in accordance with the table in which case the mine manager and the chief inspector shall jointly choose the most suitable location.
(6)
When supplies of explosives are removed from a magazine, the oldest stock shall be removed first if it is not defective.
(7)
Explosives in boxes or cartons shall be stored in regular layers in such a manner as to enable the oldest stock to be removed first and the boxes or cartons shall be stacked right side up at a sufficient distance from the walls to permit proper ventilation.
(8)
A record shall be kept of all entries and withdrawals from each and every permitted magazine and this record shall be available to an inspector at all times and shall be kept in such a manner that the quantity and age of each type of explosive in the magazine can readily be determined.
(9)
A fee prescribed by the minister shall be payable to the department for any permit granted under this section. Transport of explosives
154.
The transportation of explosives in vehicles on or about the surface property of a mine shall be subject to the following conditions:
(a)
the maximum quantity of explosives that may be carried in a vehicle shall not exceed 1,814 kilograms except with the permission of the chief inspector;
(b)
a vehicle carrying explosives shall not be loaded in excess of 80% of its rated carrying capacity;
(c)
explosives shall not be transported in a towed vehicle without the written permission of the chief inspector;
(d)
detonators shall not be carried in the same vehicle with other explosives unless they are separated sufficiently to prevent the communication of fire or explosion and in such cases, the number of detonators shall not exceed 1000;
(e)
every motor vehicle used to carry explosives shall be maintained in sound mechanical condition;
(f)
the fuel tank of a motor vehicle shall not be filled when explosives are upon the vehicle except in cases of necessity and then only when the vehicle is stopped and the ignition turned off;
(g)
every motor vehicle transporting more than 68 kilograms of explosives shall be equipped with a fire extinguisher which shall be in working order of adequate size and capable of dealing with gasoline and oil fires;
(h)
metal parts of vehicles that may come in contact with explosives containers shall be adequately covered with wood, tarpaulin or other suitable material;
(i)
explosives while being carried in a vehicle shall be so secured and fastened as to prevent any part of the load from becoming dislodged and if the vehicle is not fitted with a completely enclosed body, a fire resistant tarpaulin or other suitable material shall be provided and shall adequately cover the explosives and protect them from fire, rain or snow;
(j)
no other goods or materials shall be stowed or transported in or on a vehicle which is carrying explosives;
(k)
only persons necessary for the handling of explosives shall travel on a vehicle which is carrying explosives;
(l)
persons on or in the immediate vicinity of a vehicle which is carrying explosives are not permitted to smoke;
(m)
a vehicle which is carrying explosives shall not be left unattended and, except with the written permission of the chief inspector, the ignition shall be turned off and the brakes set when the vehicle is parked and when explosives are being loaded or unloaded;
(n)
on any vehicle containing explosives in excess of 22.7 kilograms the word "Explosives" shall be displayed in letters not less than 15.2 centimetres in height on a contrasting background and so that it is easily visible from all sides of the vehicles but shall not be displayed when no explosives are being carried;
(o)
the driver or operator of a vehicle containing an explosive shall not drive or conduct it in a dangerous or reckless manner and shall bring the vehicle to a full stop and make sure the way is safely clear before crossing a railroad track or crossing or entering a main road and the speed of the vehicle shall at no time exceed 48.3 kilometres per hour. Caps to be stored separately
155.
Blasting caps or detonators shall not be stored with other explosives but they shall be kept in a place of safety at least 30.5 metres away from such other explosives. Brush etc. to be cleared
156.
(1) All brush shall be cleared and inflammable material removed from around a magazine for such a distance as will prevent a fire hazard.
(2)
On the approach of a thunderstorm, a magazine if open shall be closed and every person in or about the magazine shall be withdrawn from it for the duration of the storm.
(3)
Magazines shall be
(a)
kept meticulously clean and where necessary floors and shelves shall be treated with a suitable neutralizing agent to remove any traces of explosive substances;
(b)
reserved exclusively for the keeping of explosives and authorized implements;
(c)
constructed and maintained to the satisfaction of an inspector and fitted with strong doors and locks;
(d)
clearly indicated by easily visible notices that explosives are stored therein and those notices shall bear the wording "Danger Explosives" and where magazines are located on the surface, the notices shall be posted beside the approaches to the building at least 2.4 metres above the ground and 7.6 metres distant from the entrance. No open lights permitted
157.
(1) Fire, lights, matches or a substance or article likely to cause explosion or fire shall not be taken into a magazine.
(2)
Electricity may be used as a source of lighting in a magazine if all electrical wiring is placed in armoured or rigid conduit with screwed waterproof joints and the metal armour or rigid conduit is permanently grounded.
(3)
A magazine may also be lighted by means of an electric torch or electric lantern of such construction or character as to eliminate in the opinion of the chief inspector all danger of fire or explosion.
(4)
In magazines, lamps shall be
(a)
installed in rigid fixtures and enclosed in vapour tight globes protected with metal guards; and
(b)
controlled by a double pole switch located outside the magazine.
(5)
Portable lamps shall not be placed or used in a magazine. Opening of cases
158.
Cases containing explosives shall not be opened in a magazine but shall be removed well clear from the magazine and opened by means of wood, fibre or copper wedge and mallet. Responsibility for magazine
159.
All magazines for explosives shall be in charge of a competent person appointed by the manager or his or her representative. Frozen explosives
160.
Frozen explosives shall not be used. Thawing of powder
161.
A person shall not thaw explosives in a magazine but in a thaw house especially provided for the purpose and for the purpose of these regulations, a thaw house shall be considered to be a magazine. Cartridges to be protected
162.
In thaw houses as well as in temporary arrangements for the thawing of explosives, the cartridge shall be so placed as to be protected from direct contact with the source of heat, whether steam, hot water, electricity or manure and no stove, boiler or electric heater shall be within 3 metres of a building containing explosives. Storage of explosives underground
163.
A person shall not store underground a greater quantity of explosives, including caps and fuse than is necessary for a 48 hour supply. Packages to carry name of maker
164.
A person shall not use an explosive at a mine unless there are plainly printed or marked on every original package containing the explosive the name and place of business of the manufacturer, the strength and the date of its manufacture. Handling explosives
165.
(1) The manager shall permit only competent persons to handle explosives.
(2)
A person shall not smoke while handling explosives. Transport of powder
166.
(1) A person shall not bring dynamite cartridges to the works to be used during the shift unless they are placed in stout containers made of wood, leather or canvas exclusively for this purpose and the person bringing them shall place the containers not less than 30.5 metres from a working place and 15.2 metres from a haulage way.
(2)
Detonators shall be kept in a box or case apart from other explosives.
(3)
Where explosives are transported by means of a locomotive, there must be a car separating the car containing the explosives from the locomotive. Defective explosives
167.
(1) A person shall not use defective or leaking explosives in mining work but shall destroy such explosives in a suitable and safe manner.
(2)
Where a mine has been abandoned or work in it discontinued, all explosives, fuse, detonators or blasting caps shall be disposed of and no explosives may be stored at that mine without the written permission of the chief inspector. Priming of dynamite cartridges
168.
A person shall not prime dynamite cartridges except when loading the holes. Use of steel or iron tools forbidden
169.
A person shall not use metallic tools in a hole containing explosives. Methods of firing
170.
(1) All blasting and firing of explosives shall be done exclusively by means of a detonating cordeau, a safety fuse or an electric current of a lower voltage than 250 volts, except when the electric current is supplied by an approved blasting machine.
(2)
The length of fuse to be used shall be such as to allow sufficient time for the blaster to seek shelter.
(3)
A fuse shorter than one metre shall not be used in any blasting operation. Guarding entrances to blasting place
171.
Every worker before blasting shall cause all entrances to the place where the blasting is to be done to be effectively guarded so as to prevent inadvertent access to the place. Due warning to be given
172.
Every worker before blasting shall give or cause to be given to persons in the vicinity due warning by a conventional signal. Number of lights
173.
Workers shall not light a fuse in underground workings without having a second light placed conveniently close. Lighting fuse with timed devices
174.
Except where the blasts are fired by electricity and where more than one explosive charge is to be fired, fuses shall be lighted by means of a suitable timed spitting device. Blasting of shafts and raises
175.
(1) All firing of shots in the course of shaft sinking shall be done by electric current.
(2)
In any raise inclined at over 50° from the horizontal and after 7.6 metres of advance has been made or in any raise where free escape is not assured at all times, all blasting shall be done by means of an electric current. Electric blasting
176.
When explosives are fired by electric current
(a)
conductors leading to the charges shall be short circuited while the leads from the blasting caps are being connected to each other and to the conductors and this short circuit shall not be removed until the workers have retreated to a place of safety;
(b)
conductors leading to the charge shall be connected to the firing device only at the instant of firing and they shall be disconnected immediately afterwards;
(c)
connecting up electric blasting circuits shall not be done during an electric storm in open cast workings nor in shaft sinking nor in a mining operation where a lightning charge is likely to cause a premature explosion;
(d)
when explosives are to be fired by electric current from a fixed source of supply, a firing device shall be used which opens both lines of the circuit automatically and the live parts of this device shall be enclosed in a locked box;
(e)
the firing device shall be of the externally operable type and the operating mechanism shall be locked in the open position except at the moment of firing and the keys shall be accessible only to the authorized shot firer. Explosives not to be removed from hole
177.
(1) A person shall not withdraw explosives from a hole whether it has been fired or not.
(2)
Once a hole has been charged with explosive, it shall not be abandoned unfired unless
(a)
effective attempts have been made to blast it; or
(b)
unforseen circumstances prevent its being blasted safely.
(3)
In either case (a) or (b), the hole shall be marked with durable warning signs on all its approaches and especially on those approaches from which fresh drilling may encounter it. Drilling near missing hole
178.
A person shall not do any drilling within a distance of 1.5 metres of any hole containing explosives. Bootlegs and bottoms
179.
A person shall not drill into the bottom of drill holes from blasting operations. Examining the face
180.
Before drilling is commenced in a working place, the person doing the drilling shall carefully examine the exposed face for misfires and cut-off holes and shall give special attention to old bottoms and, in addition, before commencing drilling underground, shall wash the exposed face. Reporting of missing holes
181.
(1) When a worker fires a round of holes, he or she shall where possible count the number of shots exploding and shall report the misfires to the mine captain or shift boss.
(2)
If a missed hole has not been fired at the end of a shift, that fact, together with the location of the hole, shall be reported by the outgoing mine captain or shift boss to the mine captain or shift boss in charge of the next relay of workers before work is commenced by them. Time for blasting
182.
When parties working contiguous properties disagree as to the time of setting off blasts, either party may appeal to the chief inspector who shall decide upon the time at which blasting operations may be performed and the decision of the chief inspector shall be final and conclusive and shall be observed by the parties in future blasting operations. Approved explosives
183.
Only explosives approved for underground use shall be used underground. Secondary blasting
184.
(1) Whenever possible secondary blasting shall be done by blockholing, except where a single detonator is employed, mud-capping or roasting shall only be done
(a)
where blockholing is impossible;
(b)
where the explosives are detonated electrically.
(2)
Notwithstanding anything to the contrary in subsection (1), the safest method shall be used to clear stock chutes, bins or pockets. Definitions
185.
The regulations made under this section may be referred to collectively as the Mining Electrical Code and the following definitions shall apply throughout the code:
(a)
"approved" means acceptable to the chief inspector;
(b)
"armoured cable" means a cable provided with a wrapping of metal, usually metal tapes or wires, forming an integral part of the assembly primarily suitable for the purpose of mechanical protection, but lead is not considered to be capable of affording such protection;
(c)
"authority" shall be the power to instruct, direct and appoint authorized persons exercised by or conveyed on another person by the manager;
(d)
"authorized person" means a person who by the nature of his or her occupation is obliged to approach or handle electrical equipment or a person who, having been warned of the hazards involved, has been instructed or authorized to do so by someone in authority;
(e)
"branch circuit" means that portion of a circuit extending beyond the final overcurrent devices on the circuit;
(f)
"circuit" means a complete conductor, loop, path or unit current-carrying part of the system conductors, also that portion of a system controlled by a switch or protected by a cut-out;
(g)
"circuit-breaker" means an electro-mechanical device designed to open under both overload and short-circuit conditions a current-carrying circuit without injury to the device;
(h)
"conductor" means a wire or cable or other form of metal installed for the purpose of conveying electric current from one piece of electric equipment to another or to ground;
(i)
"control device" means all devices which are employed for the control of circuits and electrical equipment and in these regulations shall include switches, circuit breakers, fuse cut-outs and contractors but shall not include disconnectors;
(j)
"cut-out" means a fusible device capable of automatically opening an electric current-carrying circuit under predetermined overload conditions by the fusing of metal;
(k)
"disconnector" means a switch intended for isolating either a circuit or some equipment from its source of supply, but it is not intended either for establishing or interrupting the flow of load current in any circuit;
(l)
"electrical equipment" means any equipment, machinery, apparatus, appliances, instruments, devices, fittings or materials designed for, used in or intended to be used in the generation, transformation, transmission, distribution, supply or utilization of electric energy;
(m)
"electrical supply station" means a building, room or enclosed space within which is situated electrical supply equipment and which is accessible only to authorized persons, and includes generating stations, substations and generator, transformer compartments or enclosures and other such stations or enclosures;
(n)
"exposed" means any current-carrying part of electrical equipment which can be inadvertently touched or approached more closely than is safe by a person is considered to be exposed, and the term is applied to objects not suitably guarded or isolated;
(o)
"feeder" means an electrical energy transmitting circuit of a system which supplies energy to sub-feeders or branch circuits at a distributing point in a system;
(p)
"fuse, fuse cut-out" means the same as cut-out;
(q)
"general use switch" means a switch intended for use as a switch in general distribution and branch circuits, rated in amperes and capable of interrupting its rated current at its rated voltage;
(r)
"ground" means a connection to earth obtained by a ground electrode;
(s)
"ground electrode" means a buried metallic water-piping system or metal object or device buried in or driven into the ground, so as to make intimate contact with it, to which a grounding conductor is electrically and mechanically connected;
(t)
"grounded" means connected effectively with the general mass of the earth through a grounding system having current-carrying capacity sufficient at all times under the most severe conditions which are liable to arise in practice to prevent any current in the grounding conductor from causing a harmful voltage to exist
(i)
between the grounded conductors and neighbouring exposed conducting surfaces which are in good contact with the earth, or
(ii)
between the grounded conductors and neighbouring surfaces of the earth itself;
(u)
"grounding conductor" means a path of suitable metal specially arranged as a means whereby electrical equipment is electrically connected to a ground electrode;
(v)
"grounding system" means all those cables and other conductors, clamps, ground clips and ground plates or pipes by means of which the electrical installation is grounded, including the ground electrodes to which such cable and other conductors, clamps and clips are attached;
(w)
"guarded" means shielded, fenced, enclosed, or otherwise protected by means of suitable covers or casings, barriers, rails or screens, mats or platforms, to remove the likelihood of dangerous contact or approach by persons or objects;
(x)
"insulated" means a term applied to a conducting surface separated from adjacent surfaces by a non-conducting substance offering so high a resistance to the passage of current or to disruptive discharges through or over the surface of the substance or space as to obviate danger of shock and injurious leakage of current, and when an object is said to be insulated, it is understood to be insulated to a degree suitable for the conditions for which it has been approved;
(y)
"insulation" means Class A insulation and shall give equal protection as provided by the following:
(i)
cotton, silk, paper and similar organic materials when either impregnated or immersed in a liquid dielectric,
(ii)
moulded and laminated materials with cellulose filler, phenolic resins and other resins of similar properties,
(iii)
films and sheets of cellulose acetate and other cellulose derivatives of similar properties, and
(iv)
varnishes (enamel) as applied to conductors. Class B insulation shall give equal protection as provided by the following: mica, asbestos, fibre glass and similar inorganic materials in built-up form with organic binding substances. A small proportion of Class A materials may be used for structural purposes only. Class C insulation shall give equal protection as provided by the following: mica, porcelain, glass, quartz and similar inorganic materials;
(z)
"low-voltage release" means the effect of a device operative on the reduction or failure of voltage to cause the interruption of power to the main circuit, but not to prevent its re-establishment of the return of voltage to a safe operating value;
(aa)
"overload device" means a device affording overcurrent but not necessarily short-circuit protection and capable of automatically opening an electric circuit either by the fusing of metal or by electromechanical means;
(bb)
"permissible equipment" means apparatus of approved design and detailed construction identical with similar apparatus that has been subject to explosion tests and certified and approved for use in mines where methane gas may be present in the atmosphere in dangerous proportions, and includes only permissible apparatus approved by
(i)
Certification Authority, Department of Mines and Technical Surveys,
(ii)
Certification Authority, U.S. Bureau of Mines,
(iii)
Certification Authority of British Minister of Mines, or
(iv)
Canadian Standards Association;
(cc)
"portable" means a term applied to electrically operated equipment which is usually held in the hands while being operated;
(dd)
"motor-circuit switch" means a switch, rated in horsepower, capable of interrupting the maximum operating overload current of a motor of the same horsepower as the switch at the rated voltage;
(ee)
"sub-feeder" means those conductors of a circuit which being themselves supplied by a feeder and having overcurrent protection, supply or are intended to supply 2 or more branch circuits;
(ff)
"switchboard" means a panel or assembly of panels on which are mounted any combination of switching, measuring, control and protective devices, buses and connections, designed with a view to successfully carrying and rupturing the maximum fault current encountered when controlling incoming and outgoing feeders;
(gg)
"system" means an electrical system in which all the conductors and apparatus are designedly capable of being readily connected electrically and by metallic contact to a common source of potential difference;
(hh)
"transportable" means a term applied to electrically-operated equipment which is capable of being moved from place to place under its own power or by means of another mechanical power;
(ii)
"utilization equipment" means equipment which converts electrical energy into some other useful form;
(jj)
"voltage to ground" means
(i)
in grounded circuits the highest effective difference of potential between any wire of the circuit and the ground,
(ii)
in un-grounded circuits the highest effective difference of potential existing in the circuit;
(kk)
"volts or voltage" means the highest effective difference of potential between the conductors of the circuit concerned;
(ll)
"wire gauge" means the standard known as Brown and Sharpe (B & S). Application of regulations
186.
Regulations made under this code shall apply to and govern every phase of the installation and operation of all electrical equipment in a mine and whenever in these regulations specific approvals are lacking, adherence to electrical codes recognized by the minister shall be accepted as good practice. Competent person in charge
187.
The construction, installation, operation, maintenance, repair, change, extension, or alteration of any electrical equipment or system shall be in the charge of an authorized person who must be qualified by experience to exercise authority in these works. Only authorized persons employed
188.
Every person who is engaged in the construction, installation, operation, maintenance, repair, change, extension or alteration of any electrical equipment or system shall be an authorized person. Responsibility as to competence
189.
Responsibility for the competence of authorized persons, including the person in charge, shall rest with the manager. Saving
190.
Any electrical installation in place or in use before this code comes into force may continue in use unless the chief inspector orders otherwise. Identification of equipment
191.
All electrical equipment shall be identified for safety, where necessary, and the voltage and intended use shall be shown, where important. Notice to workers
192.
(1) Clear and durable notices, made of non-conducting materials, shall be effectively exhibited when the safety of workers might benefit from it.
(2)
They should warn against the following hazards:
(a)
interference or handling by unauthorized persons;
(b)
high voltages;
(c)
electrical fires;
(d)
rescue and restoration of persons from the effects of electric shock;
(e)
special hazards noted by an inspector. Approval
193.
All electrical equipment shall be approved and electrical equipment shall be considered to be approved if it is acceptable to the Canadian Standards Association. Installation
194.
(1) Electrical equipment shall not be exposed, but shall be insulated in such a manner as to reduce life, fire and explosion hazard as far as practicable.
(2)
All switch gear and all terminals, connectors, soldered lugs, cable terminals, cable joints, cable taps or connection of apparatus shall be constructed and installed so that
(a)
all parts shall have ample mechanical strength to withstand rough usage under the conditions prevailing;
(b)
all system conductors, switch contacts, connectors, soldered lugs, bonds and joints shall have ample and sustained current-carrying capacity and all joints in conductors and connections to terminals shall be made in accordance with efficient and approved procedure;
(c)
precaution shall be taken to effectively prevent accumulation of coal or ore dusts or other conducting matter on insulation surface clearances to ground or between lines;
(d)
all exposed parts of current-carrying electrical equipment shall be protected so as to avoid danger from arcs, short circuits, fire, explosion or contact with fire or water. Equipment to be guarded
195.
Where necessary to prevent dangerous and accidental contact with it, electrical equipment shall be guarded. Inspection and repairs
196.
Electrical equipment shall be periodically inspected and, where necessary, cleaned and repaired, and defective equipment shall be disconnected and defective wiring removed. Working on live equipment
197.
It shall be unlawful to alter, repair or touch any live electrical equipment except
(a)
where the voltage is 300 volts or less; or
(b)
where it can be shown that the hazard would be minimized by the act of disconnecting the power supply from the equipment, and in either case, all necessary precautions must be taken to ensure that the work will be done safely. Automatic protection of system
198.
Reliable means shall be provided as may be necessary to prevent danger or damage to the system equipment from overload, insulation failure or short circuits to automatically disconnect feeders, sub-feeders, branch circuits, motors or an energy-using or transmitting apparatus from the system. General switch requirements
199.
(1) All control and protective devices shall be readily and safely accessible to authorized persons.
(2)
They shall be so located, labelled or marked as to afford means of identifying circuits or equipment supplied through them.
(3)
They shall be so installed, where practicable, that they cannot close by gravity and those switches that close by gravity shall be provided with a proper stop block or latch to prevent accidental closing. Control of circuits
200.
(1) Suitable control devices shall be inserted in all feeders and branch circuits.
(2)
The control devices shall be readily accessible and as close as possible to the point of supply.
(3)
They shall be grouped where practicable. Protection of underground cables
201.
(1) Suitable circuit-breakers and disconnectors shall be inserted in all feeder conductors connected to underground cables.
(2)
These circuit breakers and disconnectors shall be readily accessible and as close as practicable to the point of connection between supply circuit and underground cables. Switches for temporary wiring
202.
Switches or plug connectors shall be placed in all circuit leads at the point where temporary wiring or portable conductors are connected to the permanent wiring. Capacity of control devices
203.
(1) Control devices, with the exception of disconnectors, shall have a rated capacity such as to ensure safe interruption, at the working voltage, of the greatest current which they may be required to carry and shall be of such a capacity as to operate safely on the system from which the circuit is energized.
(2)
Each control device shall be provided with a nameplate giving the manufacturer's name, the voltage rating and ampere capacity. Identification of disconnectors
204.
(1) Disconnectors shall be of suitable voltage and ampere rating for the circuit in which they are installed and shall, where practicable, be accessible only to authorized persons.
(2)
They shall be protected by signs warning against opening the switch while carrying load current and, when open, shall be locked or tagged in such a manner to prevent inadvertent closing while work is being done on equipment.
(3)
The tags shall be of non-conducting material. Connections to control devices
205.
Control devices shall, if practicable, be so connected that the blades or moving contacts will be dead when the device is in the open position. Enclosing live parts
206.
Control devices over 150 volts to ground, unless so located or guarded as to eliminate accidental contact with them, shall have all current-carrying parts in either metal or fire resistive enclosures. Handles guarded and indicating
207.
The handles of manually-operated control devices shall be accessible to the operator without opening a door or cover giving access to live parts and shall indicate the "on" and "off" positions. Connections to protective devices
208.
Control devices with attached overload and short-circuit protective devices shall be so connected that the overload and short-circuit devices will be dead when the control device is in the open position. Good contact on switches
209.
(1) All control devices shall be so constructed and maintained as to make good contact.
(2)
Knife switches shall maintain such alignment under service conditions that they may be closed with a single unhesitating motion. When disconnector required
210.
Unless a control device on circuits above 300 volts makes a visual air-break and if the control device, the circuit or equipment connected by the device requires adjustment or repair there shall be installed between it and the source of energy a suitable air-break disconnector. Switches over 300 volts
211.
All switches interrupting circuits over 300 volts shall be operated by means of remote control mechanism or be provided with suitable casing protecting the operator from danger or contact with current-carrying parts. Circuit voltages
212.
Where it is necessary for circuits of different voltages to enter the same terminal box or interlocking relay cabinet, the circuits shall be effectively separated by barriers or shall be clearly marked. Kind of fuses
213.
(1) Where fuses are installed for the protection of circuits or equipment, only an approved type of fuse and fuse holder of proper rating shall be used.
(2)
Except for starting current for motors, the rated capacity of the fuses shall not exceed the current-carrying capacity of the conductor. Switches to fuses
214.
Unless fuse cut-outs are so arranged that the fuse can be safely disconnected from all sources of electrical energy before the ungrounded current-carrying parts can be touched, switches shall always be so placed and arranged that opening them will disconnect the fuses from all sources of electrical energy. Fuse cut-outs above 300 volts
215.
Fuse cut-outs on circuits above 300 volts to ground shall be made inaccessible to unauthorized persons and switches shall be so placed and arranged that opening them will disconnect the fuses from all sources of electrical energy. Fuse cut-outs in fireproof cabinets
216.
All fuse cut-outs installed indoors shall be installed in approved fireproof cabinets or shall be of fireproof type. Protection of inside circuits
217.
(1) Every conductor installed underground or within mine buildings shall be protected against short circuits at the point where it receives its supply and at any point where the size of the conductor is reduced.
(2)
Those conductors shall also be protected against over-current and the rating or setting of the protective device shall not exceed the allowable current-carrying capacity of the circuit conductors except in the case of branch motor circuits where the rating or setting of the device may be increased sufficiently to take care of motor-starting currents.
(3)
Unless the opening of the device disconnects all circuit conductors at the same time, no manually-operated or automatically-operated disconnecting device shall be placed in a neutral or grounded conductor.
(4)
Notwithstanding subsection (1), (2) or (3), protection may be omitted in the following cases:
(a)
if the branch circuit is not more than 7.6 metres in length;
(b)
if the protection for a larger conductor properly protects a smaller;
(c)
if the opening of the circuit may cause special hazard by interruption of service or removal of protection. Barriers between disconnectors
218.
Barriers shall be provided between circuits where more than one set of disconnectors are installed adjacent to each other. Conductors in armour
219.
All conductors of an A.C. circuit shall be run in the same conduit or armouring. Connections to apparatus
220.
Metal covered and insulated conductors in conduit, where joined to transformers, motors, switchgear and other apparatus, shall have their metal coverings secured to such apparatus by clamps, lock nuts or other device to protect the insulated conductors from mechanical injury. Control of electrical equipment
221.
Suitable control and protective devices shall be installed in the leads to all individual pieces of electrical equipment such as generators, motors, transformers, storage batteries, electric furnaces and other such equipment except between parts or pieces of apparatus intended to operate as a unit. Control devices outdoors
222.
All controlled devices installed outdoors shall be of an approved type or suitably protected from the weather. Guarding of electrical equipment
223.
(1) All exposed current-carrying parts of electrical equipment such as bus bars, conductors and terminals operating at over 150 volts and not isolated by an elevation of at least 2.4 metres shall be effectively guarded.
(2)
All exposed current-carrying parts of electrical equipment such as bus bars, conductors and terminals operating at over 7500 volts and not isolated by an elevation of at least 3 metres shall be effectively guarded and all surrounding conducting floors shall be covered with suitable insulating platforms or other insulating devices.
(3)
In supply stations, the working spaces where adjacent to exposed parts within 2.4 metres of the floor shall, where practicable, have the following minimum horizontal dimensions:
Use a motor-circuit switch
224.
(1) Each motor shall be provided with a motor-circuit switch which shall be so constructed that the "open position" may be verified by visual inspection.
(2)
A circuit-breaker or autostarter of equivalent rating may be used in place of a motor-circuit switch.
(3)
Manually-operated motor starters of the compensator type having both starting and running positions shall be so designed that they cannot remain in the starting position.
(4)
One motor-circuit switch may serve a group of motors if the motors drive several parts of a single machine or apparatus.
(5)
Motor-control devices must be placed so as to be readily accessible to the person appointed to operate the motor. Motor disconnect switch
225.
Every motor shall be provided with means to disconnect its protective devices, contractors or motor-starting devices to make the motor and control devices safe for inspection, adjustment or repair. Securing open disconnect switch
226.
Unless the motor is within plain view of or less than 9.1 metres from the motor disconnect switch, then the motor disconnect switch must be capable of being locked in the "open" position, except in the case where a manually operable switch may be placed with relation to the motor as specified above and such manually operable switch must cause all ungrounded conductors to the motor to be disconnected. Manually controlled motor starters
227.
Manually-controlled starters for all D.C. motors and for all A.C. motors over 5 horsepower shall be so designed and the circuits so arranged that they return automatically to the "off" position upon the failure of the energy supply, except when the motors and their starting devices are, during operation, under the supervision of authorized persons and the equivalent protection is otherwise provided. Guarding of switchboards
228.
(1) All switchboards and panelboards having exposed current-carrying parts operating at over 150 volts to ground shall, where practicable, be suitably encased in locked cabinets, screens or rooms or other enclosures to make them inaccessible to other than authorized persons.
(2)
Conducting floors about such boards shall be provided with suitable insulating platforms or mats so placed that no person can inadvertently touch live parts unless standing on the insulating platform. Protection against overload
229.
Each motor shall be protected against continuous overload by an overload device that will interrupt the circuit at 125% of the normal current rating of the motor. Automatic restarting
230.
(1) When automatic restarting creates a hazard on motor-operated machinery on return of voltage after stopping due to failure of voltage, the motor-control device shall provide low voltage protection which shall maintain interruption of power to the main circuit as long as desired.
(2)
When automatic restarting is necessary or desirable on motor-operated machinery on return of voltage after stopping due to failure of voltage, the motor control device shall provide low-voltage release.
(3)
If it is evident that automatic restarting of a motor will not cause any hazard under conditions of low voltage, then the protection mentioned in subsection (2) may be omitted. Ground detector
231.
On all underground distribution systems over 300 volts suitable instruments or devices shall be installed and maintained for indicating the presence of ground faults. Circuits to be grounded
232.
One conductor of all circuits not over 150 volts shall be grounded where the possibility of leakage exists from either overhead construction or through transformers having a primary voltage exceeding 150 volts, except
(a)
where such circuits form part of a control circuit or signalling system the grounding of which would affect the reliability of the service;
(b)
where such circuits are used for electric blasting. Grounding required
233.
(1) Three-wire single-phase circuits not exceeding 300 volts between outer conductors shall have the neutral grounded.
(2)
One conductor of the secondary circuits of all instrument transformers shall be grounded unless the circuits are installed and guarded as required for the high-voltage circuits of the transformers. Equipment to be grounded
234.
(1) The non-current-carrying parts of all electrical equipment shall be grounded when practicable
(a)
for all equipment over 150 volts;
(b)
for all equipment, 150 volts and under where the non-current-carrying parts are within reach of grounded conducting services.
(2)
Grounded conducting surfaces within 1.5 metres horizontally of the parts considered, or within 2.4 metres vertically of the floor, shall be considered within reach. Grounding network or system
235.
A grounding network or system may be as follows:
(a)
a system which shall be connected to the body of the earth, on the surface, through the lowest resistance earth contact possible;
(b)
a system which shall be connected to metallic water or air lines, providing that the connection is made at a point where the pipe is not liable to disconnection for alteration or repairs, and main water or air lines shall be substantially bonded together for this purpose but shall, unless connected to a buried piping system of considerable extent which will provide a low resistance ground, be connected to an artificial ground;
(c)
a system consisting exclusively of artificial grounds, consisting of buried plates, driven rods or pipes, embedded or extended below permanent moisture level, but grounding electrodes consisting of iron or steel pipes shall not be less than 1.9 centimetres in internal diameter and grounding electrodes consisting of rods shall not be less than 1.3 centimetres in diameter;
(d)
any combination of paragraphs (a), (b) and (c) which shall not be a less effective grounding system than is possible with any one of them or another combination of them. Ground resistance measurement
236.
The resistance, in ohms, of every ground contact shall be measured when installed and recorded and means shall be provided to measure the prevailing resistance of every ground contact when required by an inspector. Method of connection
237.
(1) The grounding conductor shall be connected to the grounding electrode by means of substantial ground clamps or other equivalent means.
(2)
When connecting to a metallic piping system, all paint, scale, rust or other poor or non-conducting material shall first be carefully removed.
(3)
The point of attachment of the grounding conductor to electrical equipment shall be readily accessible and attachment shall be made by means of suitable legs, clamps or other equivalent means.
(4)
The same precautions shall be taken to ensure good electrical contact at the point of attachment of the grounding conductor to electrical equipment as is required to be taken to ensure good electrical contact to a metallic piping system. Size of grounding conductor
238.
(1) For grounding electrical equipment the current-carrying capacity of the grounding conductor shall not be less than that provided by the copper wire of the size indicated in the following table:
(2)
The current carrying capacity of the grounding conductor on electrical circuits except in trailing cables shall never be less than one-fifth of the current carrying capacity of the largest conductor of the circuit and shall never be less than No. 8 B. & S.
(3)
No grounding conductor or conductors for the non-current-carrying metal parts of portable equipment operating at potentials of not more than 300 volts to ground shall have a combined cross-sectional area not less than 60% of the power conductor and in no case less than No. 16 B. & S. gauge.
(4)
The grounding conductor or conductors may be uninsulated.
(5)
The grounding conductor or conductors for the non-current-carrying metal parts of transportable equipment shall have a combined cross-sectional area of not less than 60% of the largest power conductor and in no case less than No. 8 B. & S. gauge.
(6)
The grounding conductor or conductors may be uninsulated. Grounding conductors
239.
(1) Grounding conductors shall be of copper or other metal which will not corrode excessively under the existing conditions and, if possible, it shall be continuous.
(2)
It shall be adequately protected from mechanical injury.
(3)
Ground connections from circuits shall not be made to jointed piping within buildings except that water or air piping beyond any point which is liable to disconnection may be used. Supply stations to be inaccessible to unauthorized persons
240.
(1) An unauthorized person shall not enter an electrical supply station or interfere with the workings of any electrical equipment contained therein.
(2)
Utilization equipment, if enclosed in a separate room which is accessible to unauthorized persons and when in service is under the control of an authorized person whose attention is not distracted by other processes, shall be considered as electrical supply station equipment.
(3)
When the authorized person is not present, the door of such room shall be kept securely locked.
(4)
In case of abandonment of a mine, the manager shall cause such stations supplying power to and being the property of the mine to be disconnected from the power source and within 14 days he or she shall notify the chief inspector in writing that such disconnection has been made. Lighting for supply stations
241.
(1) Rooms and spaces shall have artificial illumination in supply stations.
(2)
Arrangement of permanent fixtures and plug receptacles shall be such that the portable cord need not be brought into dangerous proximity to live electrical apparatus.
(3)
All lamps shall be so arranged that they can be controlled and replaced from safe and readily accessible places.
(4)
A separate emergency source of illumination, from an independent generator, storage battery, lantern or other suitable source, shall be provided in every station where an attendant is located. Switchboards
242.
Switchboards shall be so constructed of incombustible material and substantially supported on a metal framework at the time of installation that
(a)
they are readily accessible to the operator;
(b)
they are, at voltages over 150, inaccessible to unauthorized persons;
(c)
they are, at voltages of 150 or under, and where accessible to unauthorized persons guarded against accidental and dangerous contact with them as well as for protection against mechanical or electrical damage which might be caused inadvertently;
(d)
work can be readily and safely performed from the working space around them;
(e)
the operator will not be endangered by machinery or equipment located near them;
(f)
adequate illumination shall be provided for reading instruments and performing other operations;
(g)
exposed bare parts of different potentials shall be as few as practicable and these shall be effectively separated;
(h)
open type disconnectors mounted above switchboards shall not be considered exposed if set back 0.3 metres from the face of the panel and elevated so that no bare current-carrying part is less than 2 metres from the floor. Design and construction
243.
(1) All electrical supply lines and equipment shall be of suitable design and constructed for the service and the conditions under which they are to be operated and all lines shall be so installed and maintained as to reduce the life hazard as far as practicable.
(2)
Armoured cables only shall be used as electrical supply lines from outside of a mine to any and all points within it.
(3)
Electrical supply lines carrying a potential in excess of 600 volts to ground shall be armoured wherever they are used in a mine.
(4)
All electrical supply lines installed in bore holes shall be armoured.
(5)
All electrical supply lines shall be effectively insulated and exposed electrical supply lines are forbidden.
(6)
Electrical supply lines carried over railways operated by steam, electric or other motive power and on which standard equipment such as freight cars is used shall have the style of construction and clearances overhead as called for in the regulations of the Board of Transport Commissioners for Canada.
(7)
Supply lines crossing over surface railways on which standard equipment is not used as well as lines crossing over railways and roadways underground shall have ample clearance for the operating conditions and shall be substantially supported at least 2.1 metres above the roadway.
(8)
Trolley wires underground shall, where practicable, be at least 2.4 metres vertically above the top surface of the trolley track rails and in no case shall they be installed at less unless they are effectively guarded at such points as may be inadvertently touched by persons or objects.
(9)
Where it is impracticable or impossible to install trolley wires at less than 2.4 metres vertically from the top surface of the trolley track rails the operating voltage shall not exceed 300. Conductors
244.
Conductors shall be suitable for the location, use and voltage of the circuit and shall have sufficient current-carrying capacity for the current they are required to carry. Insulating conductors
245.
(1) All conductors shall be insulated except that exposed conductors may be permitted on certain signal systems having a potential of less than 100 volts to ground when permission has been given in writing by the chief inspector.
(2)
Subsection (1) above is not applicable to such conductors as bus bars or shunts or bare copper leads which are installed in accordance with the provisions of these regulations and other standard good practices in supply stations and on switchboards. Temporary wiring
246.
Temporary wiring is permitted only for the period of an emergency and under the competent supervision of authorized persons who shall take all possible precautions to prevent accidental contact therewith by any person or object. Cables to portable and transportable equipment
247.
(1) Trailing cables to all portable and transportable electrical equipment used in a mine shall have all their conductors, including a grounding conductor, contained in one flexible cable.
(2)
The cables referred to in subsection (1) shall have the following specifications:
(a)
all the copper conductors shall be stranded to conform with accepted practice;
(b)
the minimum size of power conductor in any such cable for transportable equipment shall be No. 10 B. & S. gauge and for portable equipment shall be No. 12 B. & S. gauge;
(c)
they shall have a voltage rating 50% higher than normal operating voltage;
(d)
they shall have a grounding conductor and the grounding conductor shall have a minimum cross-sectional area of 60% of the largest power conductor, and the minimum size of any grounding conductor shall be No. 12 B & S. gauge;
(e)
if they are transmitting electrical power at a potential exceeding 750 volts to ground, they shall have a grounded sheathing consisting of tinned copper wire mesh or equivalent around each power conductor;
(f)
for underground use, they shall have a non-inflammable covering, suitably identified. Control and protection of trailing cables
248.
Each flexible trailing cable to transportable electrical equipment shall be provided at its point of supply with a switch or equivalent disconnecting device and shall be further provided with an automatic overcurrent device on such switch or disconnecting device. Trailing cable connectors
249.
Sectional trailing cables shall be connected with approved connectors or couplings and shall have the following specifications:
(a)
the electrical joint or bond shall not have a less current-carrying rating than the cable itself at the same rated voltage as the cable;
(b)
the mechanical joint or bond shall be of sufficient strength to avoid any possibility that it will fail in use at the work for which it is designed and installed;
(c)
connectors shall be so designed and installed that the live end shall be of the receptacle type having no protruding conductors while any protrusions on the dead end must be so designed and arranged that they can be completely obscured from accidental contact therewith by persons or objects until the live electrical connection has been completely broken with them. Cable secured to apparatus
250.
(1) Each flexible trailing cable shall be mechanically secured to its machine or apparatus so as to prevent strain on the terminals or disconnecting devices at the load end of the cable.
(2)
When flexible trailing cables are not in regular use they shall be disconnected from the source of supply and made dead. Cable to be kept under observation
251.
(1) Trailing cables shall be kept under observation by the machine operator or his or her assistant or assistants so as to effectively prevent mechanical injury to them by strain or accident.
(2)
When a trailing cable has received mechanical or electrical injury such as might impair its safety it shall be taken out of use and repaired or replaced with a safe cable. Temporary repairs
252.
Temporary repairs are permitted when performed by authorized persons in a safe manner to allow the finishing of a shift. Trailing cables not to be run over
253.
It is forbidden to run over a trailing cable with a transportable machine whether such machine be electrical or another kind if such procedure will distort the cross-sectional shape of the cable. Location of lightning arresters
254.
Lightning arresters shall be located as far as practicable from all other equipment and from combustible parts of a building. Provision for disconnecting
255.
Lightning arresters on circuits over 7500 volts and all lightning arresters which may require work to be done upon them shall be so arranged and equipped that they may be readily isolated by air-break manual disconnectors. Lightning protection
256.
Protection of the surface electrical equipment of a mine from direct strokes of lightning and inductive effects of lightning discharges shall as far as is feasible be effectively provided. Equipment
257.
Equipment for the purpose of section 256 may include lightning arresters, surge-absorbers, high speed protective gaps, guard wire or guard structures. Guarding lightning arresters
258.
Lightning arresters on circuits having a voltage over 300, unless effectively isolated by elevation, shall be adequately guarded so as to protect persons from inadvertent contact therewith or from injury by arcing. Ground wires
259.
Connections between lightning arresters, lines and grounds shall not be less than No 6 B. & S. gauge and shall be as short and direct as possible, avoiding all sharp bends and turns. Installation of ground wires
260.
(1) Every grounding conductor shall be protected where exposed to mechanical injury.
(2)
The protection referred to in subsection (1) shall be of non-magnetic materials, unless the grounding conductor be electrically connected to both ends of the protective covering. Location of lightning arresters
261.
Power and lightning feeders which are connected to overhead surface systems shall be protected by lightning arresters to the point of entry to an underground system. Non-current carrying parts entering mine
262.
Where there exists special danger to the mine headframes, pipe services, tracks, cables or other such conducting materials which enter the mine being struck or charged with lightning, such service shall be protected at the surface by guard wires or guard structures grounded by low resistance grounds as for lightning arresters. Transformers
263.
(1) Transformers shall be of type and design suitable for the location in which they are to be installed.
(2)
Each transformer shall be provided with a nameplate giving the maker's name, rating in
(3)
If the transformer is to be filled with an approved liquid that will not burn in air, the liquid shall be specified. Enclosures to be provided
264.
(1) Transformers having a primary voltage in excess of 600 volts to ground and all transformers having exposed terminals, including their conductors and control and protective devices, shall be accessible only to authorized persons unless isolated by elevation they shall be surrounded by an enclosure which, if of metal, shall be grounded.
(2)
Suitable warning signs indicating the highest potential employed shall be conspicuously posted. Transformer buildings
265.
(1) Transformer buildings containing oil filled transformers if not entirely of fireproof construction shall be located at least 15.2 metres distant from another combustible building.
(2)
Oil filled transformers installed outdoors shall be located not less than 15.2 metres distant from the shaft house or any combustible building attached to it and means shall be provided to contain escaping oil or direct the flow away from such buildings. Oil-filled transformers
266.
(1) Oil-filled transformers shall not be mounted in or above combustible roofs and if attached to the exterior of a building other than a transformer house shall be placed only against non-combustible walls away from all openings.
(2)
Oil-filled transformers, if within a building other than a transformer house, shall be in a fireproof vault, suitably drained and ventilated to outdoors, door openings to be provided with not less than 15.2 centimetre non-combustible sills. Special transformers
267.
(1) Dry-core transformers with Class A insulation, if installed within a building not of fireproof construction, shall be within a fireproof enclosure.
(2)
Transformers containing an approved liquid which will not burn in air and transformers of the dry-core type with Class B or C insulation may be installed within or attached to the wall of a building not of fireproof construction, provided they are surrounded by a suitable enclosure to prevent mechanical injury and access by unauthorized persons. Control of transformers
268.
(1) Suitable control devices shall be installed on the primary side of all power and distribution transformers.
(2)
Minimum requirements for the control devices on the main high tension transformer bank connected to the supply lines shall consist of a set of gang-operated air-break disconnecting switches or a suitable circuit-breaker preceded by disconnecting switches. Protection of transformers
269.
Transformers shall be protected against overload and short-circuit by suitable protective devices unless the nature of the system makes protective devices inadvisable or unnecessary. Protection of instrument transformers
270.
Secondary circuits of current transformers shall be provided with means for short-circuiting them which can be readily connected while the primary is energized and which are so arranged as to permit removal of any instrument or other device from such circuits without opening the circuits. Grounding required
271.
When primaries are above 7500 volts secondary circuits of current and potential transformers, unless otherwise adequately protected from injury or contact of persons, shall be in permanently grounded conduit or flexible armour. Proximity to explosives storage
272.
A transformer station or electronic transmitting installation, underground in a mine, shall not be within 61 metres of any explosive storage. Ventilation transformer stations underground
273.
Where ventilation by intake air is furnished to transformer isolating compartments underground in mines, means shall be provided to shut off the ventilation and seal such transformer compartments to smother oil fires within, where manual controls are used they shall be located outside such compartments. No other equipment in transformer vault
274.
(1) Material or equipment, other than that essential to the proper operation and safety of the transformer installation, shall not pass through or terminate in a transformer vault.
(2)
The material or equipment referred to in subsection (1) includes air lines, air ducts, water and steam lines.
(3)
The transformer vault, compartment or house shall not be used as a temporary or permanent storage for any material not essential to the continuous and safe operation of the transformer and the surrounding floors shall be kept tidy and free from scraps of material or debris. Guarding live parts
275.
Electric fixtures such as lamp sockets and lamp bases, plugs, receptacles, etc. shall be so installed that no current-carrying parts shall normally be exposed externally when these parts are within reach of grounded surfaces. Voltage of lighting circuits
276.
The operating voltage of any lighting circuit shall not exceed 300 volts and the voltage to ground of any conductor except in the case of electric locomotives and cranes using direct current shall not exceed 150 volts. Identification of neutral conductors
277.
The neutral conductor on lighting circuits shall be identified by a white braid covering or other equivalent means. Style permitted
278.
(1) In locations where exposed to dampness or mechanical injury, portable lamps shall have their sockets enclosed in wood or composition handles through which the conductor shall be carried and shall have a substantial wire cage which encloses the lamp.
(2)
A hook for hanging the lamp shall be attached either to the cage or to the handle. Wiring in explosive storage
279.
(1) All electrical wiring in explosive magazines, thaw houses, detonator or blasting caps storage buildings or cap and fuse houses shall be installed in rigid conduit with screwed watertight joints or shall be armoured lead-covered cable.
(2)
All conduit, armour, fittings and fixtures shall be permanently grounded. Lighting fixtures shall be an approved dust-tight type. Switches, fuses
280.
(1) The switches and fuses for lighting, heating or telephone circuits for explosive magazines, thaw houses, detonator or blasting cap storage buildings and cap and fuse houses shall be in a fire-proof cabinet located outside the compartment in which the explosives, fuses or detonators or blasting caps are stored.
(2)
Lighting circuits shall be fused at not more than 10 amperes. Electric heating
281.
(1) Where thaw houses or cap and fuse houses are heated electrically, a hot water system shall be used.
(2)
The electric heater shall be installed outside the compartment in which the explosives are stored and the heater and radiators shall be grounded.
(3)
Heater circuits shall be fused at not more than 125% of normal current.
(4)
Wire or gridtype heaters shall not be installed in or about any building in which explosives or detonators or blasting caps are stored or handled. Relamping
282.
Circuits in explosives magazines, thaw houses, detonators or blasting cap storage buildings must be dead before fixtures are opened for relamping and suitable notices warning all persons of this provision shall be posted near each fixture. Electric blasting devices
283.
The firing device used for firing shots with electricity from lighting or power cables shall be so arranged that
(a)
the switch mechanism will automatically return to the open position by gravity;
(b)
the live side of such device is installed in a fixed locked box and shall be accessible only to the authorized shot-firer;
(c)
provision is made that the leads to the face are short-circuited either
(i)
when the leads are installed connected to the contacts of firing device and those contacts are in the open position, or
(ii)
when the leads are installed connected to an attachment plug, the attachment plug shall be inserted in a short-circuiting receptacle which shall be effective;
(d)
the box in which the shot-fire device and short-circuiting device are mounted is provided with a lock and the door is so arranged that it cannot be closed or locked unless the contacts of the firing device are open and the short-circuiting device is in place;
(e)
when the short-circuiting device consists of a plug attachment and short-circuiting receptacle, the short-circuiting receptacle shall be located not less than 1.5 metres from the shot-fire device and the shot-fire device shall have a receptacle into which the attachment plug may be inserted without having to unlock or open the door and, except at the moment of energizing the blasting leads, the shot-firing device shall effectively short-circuit them within the shot-firing device. Voltages permitted
284.
Electric blasting shall not be done at voltages in excess of 300 to ground. Designs permitted
285.
Electric blasting or shot-firing device or method shall not be employed in a mine unless it specifically meets the provision outlined in these regulations or permission has been given in writing by the chief inspector and only one electrical shot-firing device shall be installed in any one working place. Installation of blasting wire
286.
When shot-firing or blasting wires or cables are installed in the vicinity of power or lighting cables, proper precautions shall be taken to prevent the shot-firing cables or wires coming in contact with the lighting or power cables. Grounded circuits not permitted
287.
Circuits having a grounded conductor shall not be used for shot-firing and where the power supply is obtained from a transformer having a primary voltage in excess of 750 volts, the power supply circuit shall be provided with an insulating transformer having a one to one ratio. Protecting equipment
288.
Telephone or other signal apparatus which must be handled by persons and which is connected to overhead signal circuits exposed to supply lines of over 300 volts to ground shall be protected as follows:
(a)
by fuses and arresters;
(b)
all exposed non-current-carrying metal parts shall be permanently grounded or the apparatus shall be installed in such a way that a person using it will be obliged to stand on an insulated platform in an uninsulated booth or on other insulating surfaces. Protection from induced voltage
289.
Telephone or signal apparatus which is connected to a line which parallels a supply circuit of high voltage in such a manner as to be exposed to induced voltage shall be protected by transformers and shall comply with the requirements of section 288. Apparatus permitted
290.
All telephone apparatus used underground shall be of a type suitable for use in mines and shall be suitably enclosed and protected against moisture and mechanical injury. Protection from contact
291.
Adequate precautions shall be taken to prevent electric signals or telephone wires from coming into contact with other electrical conductors or apparatus. Disconnections
292.
Readily accessible means shall be provided whereby all conductors and equipment in or on cars or cranes may be disconnected entirely from the source of energy at a point as near as possible to the trolley or other current collector. Switches
293.
A circuit-breaker or switch capable of interrupting the circuit under heavy load shall be used unless the current collector can be safely removed under heavy loads from the trolley wire. Protection of storage batteries
294.
(1) Storage batteries in rooms used also for other purposes shall be adequately guarded or enclosed.
(2)
Means shall be provided, if necessary, to prevent dangerous accumulations of inflammable gas.
(3)
Batteries whose operating voltage exceeds 50 volts shall be installed in conformity with the general rules covering equipment. Operating voltages underground
295.
In underground workings, tunnels or under bins or in similar locations where trolley wires are necessary less than 2.4 metres above the rail level, the operating voltage shall not exceed 300 and the wires shall be effectively guarded to prevent accidental contact of a person. Warning equipment
296.
Every locomotive, engine, trolley, transportable machine or motor car used either above or below ground shall be equipped with headlight and a whistle, bell, gong or horn which shall be maintained at all times in proper working condition. Control levers
297.
Control levers of transportable equipment, including storage battery and trolley locomotives, shall be so arranged that the levers cannot be removed when the power is on. Dead ending
298.
The ends of trolley line conductors or feeders shall be dead-ended by strain insulators. Suspension
299.
Trolley wires shall be supported on suitable insulated trolley wire hangers properly aligned and reliably secured. Guarding
300.
Guards shall be of insulating material and the distance between them shall not exceed 22.9 centimetres and they shall extend at least 7.6 centimetres below the trolley wire. Sectionalizing
301.
Trolley lines shall be sectionalized at the direction of the chief inspector and all branch trolley lines shall be provided with switches installed close to the frogs for disconnecting the branch trolley lines from the main trolley line, but this latter provision does not apply to sidings of lengths less than 304.8 metres. Bonding
302.
The tracks of all rail return trolley traction systems shall be adequately and continuously bonded to suit the operating conditions. Location
303.
Trolley wire shall be situated, where practicable, on the same side of the track on any one route and on the side opposite to the man-travelling way. Other wires
304.
Telephone, signal and blasting circuits shall be kept on the clearance side of the track from the trolley lines. Air or water pipes
305.
Where air or water pipe lines parallel the track-return circuit of a trolley system, the tracks may be securely bonded to such pipes at frequent intervals to equalize potentials and to minimize electrolysis, but those pipe lines shall be no substitute for high continuous conductivity in the track-return circuit of the trolley system. Proximity of trolley wire
306.
Trolley wires may not be installed nor allowed to approach nearer than 30.5 centimetres to a mine car or locomotive. Notices
307.
Durable warning notices cautioning against danger from live wires shall be prominently posted at all points of hazard. Fire extinguishers
308.
(1) Where installed electrical equipment presents a fire hazard, each room or space shall be provided with an adequate approved fire extinguishing appliance, conveniently located and conspicuously marked.
(2)
No chemical appliance which has not been approved for use on live parts shall be placed in any room containing electric apparatus or live lines unless a sign is mounted at the appliance warning against its use on electrical fires. Underground installations
309.
(1) All regulations that apply to surface installations shall apply equally to underground installations.
(2)
The following are special regulations applicable only to underground installations. Control of underground feeders
310.
(1) Where electrical energy is taken underground, provision shall be made so that the current can be cut off on the surface.
(2)
The control device shall not be accessible to unauthorized persons and, if not located in a supply station, shall be in a separate room or screened-off enclosure. Test certificate necessary
311.
All new cables purchased for the transmission of power underground at a potential in excess of 750 volts shall be accompanied by the manufacturer's certified report of insulation tests, a copy of which shall be filed with the chief inspector. Ratings
312.
(1) All cables transmitting power underground at a potential exceeding 750 volts shall have a voltage rating of 50% higher than the normal operating voltage.
(2)
All control devices designed to afford short-circuit protection on circuits exceeding 750 volts shall have a voltage rating of 50% higher than normal operating voltage. Voltage signal system
313.
(1) The operating voltage on signal systems shall not exceed 150 volts to ground.
(2)
One conductor of the two-wire signal circuit shall be grounded where the power supply is obtained from a transformer having a primary voltage in excess of 750 volts.
(3)
The signal system may be operated with both conductors ungrounded when the supply is from a transformer having a primary voltage in excess of 750 volts provided an insulating transformer having a one to one ratio is installed between the supply and the signal system. Electric signal system
314.
Where an electric hoisting signal system is installed in any shaft, winze or slope, there shall be a suitable, separate, audible system for the control of each hoisting conveyance operated from a single hoist and there shall be sufficient difference in the sounds of the signals to the hoistperson that they are easily distinguishable and it shall be so arranged that the hoistperson can return the signal to the person giving the signal. Power conductors
315.
(1) Conductors for all circuits not over 150 volts to ground shall either be installed in standard conduits, armoured on non-inflammable casings or securely tied to suitable insulators so that they do not touch any timbering or metal.
(2)
On no account shall staples be used.
(3)
Open type wiring shall not be used in timbered shafts or winzes except in cases of extreme emergency.
(4)
All fixed conductors transmitting power underground at over 150 volts to ground shall be armoured or enclosed in standard conduit and substantially supported. Grounding of casings
316.
The armouring or casings of all cables shall be bonded together so as to be electrically continuous and shall be connected at some point or points to a satisfactory ground on surface. Junction or splice boxes
317.
(1) At all underground stations where any cable transmitting power at a potential exceeding 300 volts leaves the shaft, a junction box shall be provided into which such cable shall run.
(2)
Junction boxes on any cable transmitting power at a potential exceeding 300 volts shall not be located in a shaft or winze nor attached to any timbers at a shaft or winze station or in a headframe.
(3)
Splice boxes for cable extensions in a shaft or winze shall be approved. Terminals of lead-sheathed cables
318.
All lead-sheathed cables shall be provided with properly sealed cable terminals to exclude moisture from the insulation. Fire prevention
319.
(1) The bases of electrical motors, transformers, starting equipment and other electrical apparatus and the compartments in which they are installed shall be of such material and constructed in such a manner as to reduce fire hazard to a minimum.
(2)
Inflammable material shall not be stored or placed in the same compartment with any such equipment or apparatus. Electric heaters
320.
Where lamps, wires or grid-type heaters are used underground, they shall be so installed and protected as to prevent the heat generated from becoming a fire hazard. Fire protection
321.
(1) Approved fire extinguishing devices for use on electrical fires shall be provided and maintained in condition for immediate use.
(2)
They shall be conveniently mounted at or in every place containing electrical apparatus having inflammable insulation or parts which, once ignited, can support combustion. Type and location of transformers
322.
The type and location of transformers installed underground shall be satisfactory to the inspector. Special rules
323.
(1) Any book of special rules prepared by the manager of a mine shall be reviewed by the chief inspector and if he or she approves the special rules they shall be considered to be incorporated in these regulations at that time and may be enforced in the same manner as these regulations.
(2)
A copy of such approved book of special rules shall be supplied by the operator to each worker employed in the mine, free of charge. Distribution of regulations
324.
(1) A copy of these regulations together with a copy of the special rules applying to any individual mine, if they have been prepared by that mine, shall be given to each worker at the mine.
(2)
A sufficient number of copies of the regulations will be supplied by the department to each mine free of charge for issue to the worker employed at that mine.
(3)
Each employee shall sign a receipt showing that he or she has received his or her copy and he or she will be obliged to return his or her copy when leaving the employ of the mine or pay for it.
(4)
The department will supply additional copies after the first order to the individual mines at the cost of printing and handling. Failure to comply with order of chief inspector
325.
(1) Every person who fails to comply with a written order of the chief inspector or an inspector issued to him or her in accordance with the Act or the regulations is guilty of an offence.
(2)
Every operator or manager who fails to complete any work or fails to give written notice of the completion of the work in accordance with a written order of the chief inspector or an inspector issued to him or her in accordance with the Act or the regulations is guilty of an offence.
(3)
Every operator, manager or other person guilty of an offence under this section is liable on summary conviction to a fine not exceeding $1,000 and in default of payment to imprisonment for a term not exceeding 3 months. Penalty for continuing offence after notice
326.
Where the chief inspector or an inspector gives written notice to an operator, manager, or person engaged or employed in or about a mine, that an offence has been committed against the Act or the regulations, the operator, manager or person is, in addition to another penalty imposed by this Act or the regulation, liable on summary conviction to a fine not exceeding $100 for every day upon which the offence continues after the notice and in default of payment to imprisonment for a term not exceeding one month. Damaging equipment, etc.
327.
Every person who wilfully damages or without proper authority removes or renders useless any fencing, casing, lining, guide, means of signalling, signal, cover, chain, flange, horn, brake, indicator, ladder, platform, steam-gauge, water-gauge, safety-valve, electrical equipment, firefighting equipment, first aid equipment or other appliance or thing provided in any mine in compliance with the Act or these regulations is guilty of an offence. Intoxicating liquors
328.
(1) Every person under the influence of or carrying any intoxicating liquor who enters a mine or is near any working place on the surface or is near any machinery in motion is guilty of an offence.
(2)
The manager shall remove or cause to be removed any person referred to in subsection (1) from the mine, working place or machinery and if he or she knowingly fails to do so, he or she is guilty of an offence. Offence
329.
(1) Every operator, manager or other person who contravenes or fails to comply with the provisions of the Act or of these regulations or a requirement or obligation imposed on him or her by virtue of the Act or these regulations or an order made under the Act or under these regulations is guilty of an offence and where no other penalty is provided is liable on summary conviction to a fine of not less than $20 and in default of payment to imprisonment for a period not exceeding 30 days.
(2)
Each day's continuance of the contravention or failure to comply with the provisions of the Act or of these regulations or any requirement or obligation imposed by virtue of the Act or these regulations or an order made under the Act or under these regulations constitutes a separate offence. Where operator is a corporation
330.
Where the operator is a corporation and is guilty of an offence under the Act or the regulations, an officer, director or agent of the corporation who directs, authorizes, assented to, acquiesced in or participated in the commission of the offence is a party to and guilty of the offence and is liable on conviction to the punishment prescribed for the offence whether or not the corporation has been prosecuted or convicted. Fines are minimum
331.
In any prosecution or proceeding under the Act or the regulations, the court has no power to impose less than the minimum fine or imprisonment prescribed by these regulations and the court has no power to suspend sentence. Prosecution, how taken
332.
All prosecution for offence against the Act or the regulations may be taken in the name of the minister or the chief inspector or an inspector. Repeal
333.
The Mines (Safety of Workmen) Regulations, 1957,
ŠEarl G. Tucker, Queen's Printer |