OHS Code Explanation Guide

Published Date: July 01, 2009
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Part 36 Mining

Section 558 Water control valves

Subsection 558(1)

Water control valves must be strategically placed along potential fire ranges and in other critical areas to provide workers adequate access to the emergency water supply. Availability, accessibility, standardization of materials and proximity of water control valves to a potential fire hazard are important considerations when designing and installing fire fighting systems in underground mines. Since the mine continuously advances, adding or locating control valves close to any particular working face is an on-going activity.

Subsection 558(2)

Nozzles and hoses of the specified size and capacity must be available at each water control valve. In this case it is specified that the water control valve must be capable of delivering not less than 4 litres per second of water flow.

Subsection 558(3)

The length of hoses and the size of nozzles are fixed by this subsection. Meeting these criteria ensures that the largest possible area can be reached by each hose to extinguish the fire, delivering the stated minimum volume of water per second.