237. Methane and other gas monitoring system (in case of positive pressure in the reservoir).
(1)A proper automatic on line or continuous methane monitoring system fitted with audio visual a1arm shall be installed along the gas pipelines.(2)Methane monitors will be placed at every 500 meters interval along the main pipeline in the return air way or at closer interval if so required by the Regional Inspector.(3)Methane monitors shall be inter-faced to electrically actuated valves attached to the tracer tubing.(4)Methane monitoring system shall be provided with uninterrupted power supply arrangement.(5)All air that cross or passes the pipe-line shall be monitored by methane monitors.(6)Calibration of each methane monitor and the system so installed shall be done quarterly and record of the same shall be maintained in a bound paged book kept for the purpose duly signed by the competent person and counter signed by official in-charge of CBM or AMM or CMM and the manager.(7)All the gas monitors and the automatic gas detecting system shall be of a type approved in writing by the Chief inspector and the repairs and calibrations of all such monitors and system shall be undertaken only at an approved laboratory.
