OHS Code

Published Date: July 01, 2009
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Part 36 Mining

Section 712 Air velocity

(1) An employer must ensure that a ventilation system in a mine maintains a minimum air velocity at working faces of 0.3 metres per second.

(2) An employer must ensure that a ventilation system maintains a minimum air velocity in roadways, other than working headings, of 0.3 metres per second unless methane layering is occurring, in which case the air velocity must be increased to prevent the methane layering.

(3) An employer must ensure that the velocity of the air in a ventilation system is not more than

(a) Repealed

(b) 5 metres per second in a coal conveyor road, and

(c) 8 metres per second in other roadways.

(4) The Director may grant an acceptance changing the requirements of subsections (2) or (3) only after reviewing a proposal certified by a professional engineer.