Podcast
Questions and Answers
What is the first step the operator must take at the commencement of the shift?
What is the first step the operator must take at the commencement of the shift?
Where should the flammable gas tests take place?
Where should the flammable gas tests take place?
How often should flammable gas testing take place?
How often should flammable gas testing take place?
What should the machine operator do if gas is detected at a level greater than 1% in the general atmosphere or 150mm in all directions from the hole or gas shut off valve?
What should the machine operator do if gas is detected at a level greater than 1% in the general atmosphere or 150mm in all directions from the hole or gas shut off valve?
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What should the machine operator do if the rods are already out of the hole when gas is detected?
What should the machine operator do if the rods are already out of the hole when gas is detected?
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What should be done after the machine operator has stopped work and closed the air and water supply?
What should be done after the machine operator has stopped work and closed the air and water supply?
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What should be done to re-open the methane valve?
What should be done to re-open the methane valve?
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What should the machine operator do after the methane valve has been re-opened?
What should the machine operator do after the methane valve has been re-opened?
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Study Notes
Flammable Gas Testing
- Conduct flammable gas tests at the commencement of the shift
- Test at high points against the hanging using a zig-zag pattern and at 3 points on the ground
- Test at all electrical equipment, at the diamond hole, and at obvious fissures and dykes observed in the core
Frequency of Testing
- Conduct flammable gas tests every time a rod is added and whenever the rods are pulled out of the hole
- Record every gas test made, including time and location
Procedures in Case of Gas Detection
- If gas is detected at a level greater than 1% in the general atmosphere or 150mm in all directions from the hole or gas shut-off valve:
- Stop work immediately and close the air and water supply
- Do not extract the rods
- Close the water valve at the face clamp
- Close the methane valve/gas separator at the end of the rod string
- Tighten the stuffing box
Additional Procedures
- If the rods are already out of the hole when gas is detected, shut the 2-inch valve
- Barricade off/close the barrier at the entrance and withdraw all workers to the fresh air-side of the ventilation
- Display methane notice boards on both sides of the site
- Place guards to warn people
- Notify the miner or team leader or any official nearby
- Notify all people working downstream of the ventilation area
- Stop locomotives in the immediate area
- Report to the control room, supervisor, or ventilation department immediately
- Complete the methane intersection report when on surface
- Only re-open the methane valve in accordance with the Mines SOP
- Work only to commence after written permission was obtained
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Description
Learn about the procedures for testing flammable gases in different environments, including the frequency and locations of testing. Understand the importance of safety protocols and regulations.
