In the sealing notice, which item must be included regarding ignition sources?

• A. No ignition sources information
• B. Ignition sources outside the sealed area
• C. Any evidence of ignition sources present in the area to be sealed
• D. Potential ignition sources without evidence

Answer: (C)

In a sealing notice, you must include any evidence of ignition sources present in the area to be sealed. This matters because sealing is meant to isolate gases and coal dust and prevent ignition from propagating or re-entering the sealed zone. If there’s actual evidence of ignition sources inside the area—such as overheated equipment, electrical faults, hot surfaces, or any activity that could produce sparks—documenting it ensures the sealing plan accounts for those risks and puts appropriate controls in place, like shutting down equipment, isolating circuits, or increasing monitoring behind the seal.

Why the other ideas don’t fit: stating no ignition sources information would hide a real risk, and focusing only on ignition sources outside the sealed area ignores what could ignite behind the seal. Claiming only potential sources without evidence would be speculative; the notice should reflect what is actually present or observed.