132. Condition of machinery. J\.ll machinery in use in, on or about a mine shall be kept in good order and condition, and shall be provided with all necessary fittings and appliances required by the Act or any other Act relating thereto; and the manager shall, when required, satisfy the inspector that such machinery has been properly tested and examined.
133. When power to be cut off. The power driving the motors or engines of locomotives, portable hoists or scraper conveyors used in, on or about a mine shall be turned off at the motors or engines when the operator is not at the controls provided that in the case of a locomotive driven by an internal combustion engine, such engine may be permitted to idle when the driver is not at the controls but only if adequate measures are taken to prevent the accidental movement of such locomotive.
134. Traffic control system to be installed. Where underground transport is by power, other than hand power, and when required by the inspector, an approved method of traffi~ control shall be installed and fJperated.
135. Locomotive appliances underground. Every locomotive used underground shall be provided with-
(a) An efficient brake;
(b) An efficient headlight and means for giving an audible warning signal;
(c) When required by the inspector a suitable type of portable fire extinguisher placed within easy reach of the driver.
136. Examination of locomotive. (1) Once at least in every working shift each locomotive used underground shall be examined by a competent person.
(2) Once at least in every week each locomotive used underground shall be examined by a competent person appointed by the manager, who shall see that it is in proper working order and the result of the examination shall be recorded.
137. Maximum load speed, etc. The manager shall-
(a) Fix by notice the maximum load to be hauled by each locomotive and the maximum speed of trains on each travelling way.
(b) Cause cautionary notices to be posted in the travelling way wherever special precautions are necessary to ensure the safe running of trains.
138. Who may ride on locomotive. ( 1) In addition to the driver, the brakeman and one other workman may also ride on a locomotive provided seating arrangements or footplates and handgrips approved by the inspector are available for their use.
(2) No workman other than the driver or brakeman who is protected in a manner approved by the inspector shall ride on the front end of a locomotive in respect to its direction of travel.
139. Use of internal combustion engines underground. No internal combustion engine other than a diesel engine shall be used underground in any mine and no diesel engine shall be used underground in a locomotive, vehicle or otherwise without the written permission of the Chief Inspector.
140. Defective engines forbidden. No diesel engine shall be used underground if it has any defect that may affect its safe operation.
141. Examination of internal combustion engine. All diesel engines used underground shall be examined daily by a competent person and at least once a week by a competent diesel engineer or mechanic and the results of such weekly examination and the actions taken to remedy defects, if any, shall be recorded.
142. Age limit. and license for driver. No person under the age of 18 years and who is not the holder of an appropriate certificate to operate a diesel engine if such a certificate is required, shall be employed to drive a diesel engine underground.
143. Transport of fuel. Fuel oil and lubricants shall be conveyed into underground workings in approved strong and closed receptacles which do not leak and which shall be regularly examined for leakage.
144. Specification for oil fuel. Oil used for fuelling diesel engines used underground shall have a minimum closed flash point of not less than one hundred and fifty degrees Fahrenheit as determined in the manner indicated in the current British Standards Specifications.
145. Storage of fuel, etc., service stations. ( 1) Fuel, oil and lubricants used for diesel engines underground shall be stored in such quantities, and in such fuel rooms as may be approved by the inspector.
Regulations rr.146-149 71 (2) Servicing and fuelling of diesel-engined vehicles used under- ground and which cannot conveniently be serviced and fuelled on the surface shall not take place in a fuel room but at an underground service station approved by the Inspector.
(3) When required by the Inspector, underground fuel rooms and service stations shall-
(a) Be constructed of non-flammable materials, have impervious floors of concrete and be adequately ventilated.
(b) Be provided with equipment for extinguishing fire including buckets of dry sand.
( 4) No naked lights or smoking shall be allowed in or in the immediate vicinity of any fuel room or service station underground.
(5) Any oil spillage underground shall be taken up immediately by dry sand and deposited in a fire-proof receptacle and removed from the mine.
146. Ventilation standards. Diesel engines shall be used under- ground only in places where the following standards of ventilation are maintained:-
( a) Air for the ventilation of such places shall be drawn from the purest possible source and shall contain not less than 19 percentage of oxygen by volume and not more parts
ol
the following gases per million parts of air by volume than are here specified--carbon monoxide 50 parts, carbon dioxide 5,000 parts, oxides of nitrogen 5 parts and hydrogen sulphide 20 parts.(b) The exhaust gases of diesel engines shall not contain more than fifteen parts per ten thousand of carbon monoxide.
(c)-
(i) The quantity of air passing through such places shall be not less than fifty cubic feet per minute per Brake Horse Power or five thousand cubic feet per minute whichever is the greater.
(ii) The horse-power of the maximum number of such engines working in such places at any one time shall be the horse-power for computing the above quantity of air.
(iii) The above quantity of air for such engines shall be in addition to any quantity of air required for any other purpose.
147. Air analysis. Analysis, by methods approved by the Chief Inspector of the air in places where diesel engines are used shall be made at four weekly intervals or more frequently if directed by an inspector, and the results of such analyses shall be recorded.
148. Position of exhaust. Engine exhaust gases shall be discharged at a point remote from the engine operator.
149. Exhaust gas scrubbers. ( 1) Diesel engines used underground shall be fitted with exhaust gas scrubbers or approved apparatus suitable for rendering toxic exhaust gases harmless or for reducing the toxic content of such gases to comply with these regulations.
(2) The tanks of such exhaust gas scrubbers shall be cleaned and filled daily with fresh water.
( 3) Other approved apparatus shall be examined and cleaned as frequently as may be required by the inspector.
150. Unnecessary running of engines to be avoided. Diesel engines of vehicles used underground shall not be left running while the vehicles are stationary except for short periods when necessary.
151. Regulations to be posted.. A copy of the foregoing regulations concerning the use, examination, servicing and fuelling of diesel engines underground, the transport and storage of fuel, oil and lubricants and the provision of service stations underground, the maintenance of adequate ventilation in places where diesel engines are used and the means whereby the exhaust fumes from such engines are to be rendered harmless, shall be kept posted at every fuel room and service station underground.