DRILLING OPERATIONS IN METHANE EXPLORATION
Conditions and other details for conduct of Drilling Operations in connection with methane exploration or extraction in belowground coal mine, as follows:
I. Every drilling system shall have Safe Operating Procedures covering all the operations, repair and preventive maintenance including safety checks as per OEM recommendations.
II. An emergency plan shall be prepared considering the risks of spontaneous combustion, and hazardous gases and shall be implemented in case of emergency.
III. The All drilling crew shall be imparted basic hazardous gas training and shall be aware of the recommended trigger levels. All on site personnel shall have appropriate PPE and RPE.
IV. To prevent the incidence of frictional ignitions of methane there shall be a regular change-out schedule to replace worn bits, bits with a larger carbide tip to reduce wear shall be provided.
V. To reduce frictional ignitions bits shall be replaced regularly
VI. The power unit for the drill shall be kept in a fresh air entry. VII. The drill machine shall be fitted with a gas monitor that alarmed at 1percent methane and cut power to the rig when the sensor detected 1.25 percent methane. These monitors shall be periodically calibrated.
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