OHS Code

Published Date: July 01, 2009
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Part 36 Mining

Section 731 Flammable gas levels

(1) An underground coal mine manager must ensure that workers are withdrawn from a work area if the amount of flammable gas in the general body of the air exceeds 40 percent of the lower explosive limit.

(2) An underground coal mine manager must ensure that the supply of electrical power is automatically cut off if the amount of flammable gas in the general body of air exceeds 25 percent of the lower explosive limit.

(3) An underground coal mine manager must ensure that workers do not blast if the amount of flammable gas in the general body of air exceeds 20 percent of the lower explosive limit.

(4) An underground coal mine manager must ensure that workers do not operate diesel engines if the amount of flammable gas in the general body of air exceeds 20 percent of the lower explosive limit.

(5) An underground coal mine manager must ensure that a bleeder system is designed such that the flammable gas level does not exceed 40 percent of the lower explosive limit.