Prevention of flammable gas and coal dust explosions in collieries

Prevention of flammable gas and coal dust explosions in collieries

8.1.5.1. Intake airways, return airways and belt roads remain unrestricted, accessible and that safe roof and side wall conditions prevail; and

8.1.5.2. Adequate air velocities will prevent the accumulation of dangerous gases while preventing dust from becoming airborne.

8.1.6. Main fans

The COP should describe measures to ensure that:

8.1.6.1. Records shall be kept of the operation, monitoring, maintenance and inspection of main and booster fans ; and

8.1.6.2. The health and safety of persons who may be affected by the unplanned stoppage of main and booster fans .

8.1.7. Barometric pressure

The COP should describe measures to:

8.1.7.1. Ensure the monitoring and recording of the fluctuations in the barometric pressure; and

8.1.7.2. Be taken to reduce the significant risks associated with such fluctuations.

8.1.8. Abandoned areas

The COP should describe measures to ensure that:

8.1.8.1.

Abandoned areas remain ventilated to prevent a build-up of an explosive concentration of flammable gas , or are sealed off;

8.1.8.2. When abandoned areas are being sealed off; the sealing process is in accordance with accepted procedures; ventilation rates are maintained at prescribed levels; stone dust is applied in accordance with the COP and the presence of any flammable gas is monitored continuously until final sealing has been completed; 8.1.8.3. Prior to an abandoned area being sealed off, electrical conductors , earthing and bonding of electrical equipment and accumulations of coal, shall be removed and any borehole sealed off (rehabilitated). Record of these actions shall be kept until mine closure;

8.1.8.4. Working conditions for employees working near abandoned areas are safe; and

8.1.8.5. The monitoring of the atmosphere within the abandoned area is done according to the risk assessment.

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