(1)The manager shall ensure that the Oil Industry Safety Directorate Standard, that is, OISD-STD-128 or its revised version is followed for operation and maintenance of apparatus under pressure.(2)All apparatus used as or forming part of the equipment of a mine which contains or produces air, gas, petroleum or steam at a pressure greater than atmospheric pressure shall be so constructed, installed and maintained as to obviate any risk of fire, bursting, explosion or collapse or the production of noxious gas.(3)Every air receiver or container or separator used for storage of petroleum or gas or steam under pressure shall be fitted with a safety valve and pressure measuring device which shows pressure in excess of the atmospheric pressure.(4)A competent person shall, before an air receiver or a container containing petroleum or gas or steam is cased in or put in commission-(a)subject it to a hydraulic test at a pressure at least one and a half times of the maximum permissible working pressure and similar test shall be made after every renewal or repair and in any case at intervals of not more than five years or at such shorter intervals as may be required by the Regional Inspector; and(b)record the result of every such test which shall be countersigned and dated by the manager, deputy manager or installation manager.(5)The manager shall ensure that the discharge line of an apparatus under pressure is provided with a pressure relieving safety device.(6)There shall be no valve or fitting between the pressure apparatus and its pressure relieving safety device or between the device and point of discharge, as would render the device ineffective.(7)The pressure relieving safety device shall be set to open at a pressure not exceeding ten per cent above the maximum allowable working pressure.(8)The pressure relieving safety device shall be tested and calibrated at least once in a year and record of such test shall be maintained at the mine.(9)Every incoming gas line connected to any compressor shall be provided with a shut-off valve at a distance outside the compressor shed.(10)No repair shall be undertaken in respect of any gas compressor and pipelines and fittings connected to it unless the control valve of the inlet and discharge lines are closed and securely locked.
