Prevention of flammable gas and coal dust explosions in collieries

Prevention of flammable gas and coal dust explosions in collieries

8.3.11 Prevention of holing excavations into any adjacent area which may contain an accumulation of flammable gas .

8.3.12 Measures to prevent ingress, and ignition of high-pressure flammable gas into existing.

8.3.13 Identification of the potential sources of static electricity and of details related to the prevention and control measures.

8.4. Reporting of flammable gas

The COP should set out a procedure to ensure that flammable gas intersections are reported. The internal and official reports should describe the recorded presence of any flammable gas concentration exceeding one comma four parts per hundred by volume in the general atmosphere or any ignition of flammable gas as per MHSA Regulation 23.4 (g).

8.5. Clearance of flammable gas

Refer to Annexure B: The Guidance Note for the Prevention of Flammable Gas and Coal Dust Explosions in Collieries

The COP should set out a procedure to ensure that the clearance of flammable gas accumulations, including roof layers, is done safely addressingat least the following:

8.5.1. The dilution, removal and dispersion of flammable gas , including roof layering;

8.5.2. Isolating electricity; and

8.5.3. Withdrawal of employees.

8.6. Limiting the formation and dispersion of coal dust

Refer to Annexure B: The Guidance Note for the Prevention of Flammable Gas and Coal Dust Explosions in Collieries

The COP should set out measures for the limiting of the formation and dispersion of coal dust covering at least the following:

8.6.1. Limiting of formation of coal dust at coal mining faces, conveyor belts and transfer points, tramming and travelling routes and any other identified high-risk areas. Such measures must stipulate the design specifications of such dust suppression systems that will be in use on each coal winning or transporting machinery.

Note: Such measures should comply with Section 21 of the MHSA .

8.6.2. The regular clean-up and removal of coal accumulations in face areas before stone dust applications, as well as along conveyor belt roads and travelling roads, at

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