OHS Code

Published Date: July 01, 2009
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Part 10 Fire and Explosion Hazards

Section 172 Storage compartments

(1) An employer must ensure that welding services provided from vehicles comply with CSA Standard W117.2-01, Safety in welding, cutting and allied processes with the exception of Clause G.2 (Cabinets) of Annex G.

(2) An employer must ensure that gases do not accumulate and reach their lower explosive limit by providing the solid-walled storage compartments in which compressed gas cylinders are stored with vents

(a) that have a minimum of 0.18 square metres of free area for every 0.42 cubic metres of compartment volume,

(b) that have the free area split evenly between the top surface and the bottom surface of the storage compartment, and

(c) that are unobstructed under all conditions.

(3) An employer must ensure that solid-walled storage compartments in which compressed gas cylinders are stored are built so that gases or vapours cannot flow into adjoining compartments.

(4) An employer must ensure that solid-walled compartments in which compressed gas cylinders are stored use

(a) latching and locking hardware made of non-sparking materials, and

(b) electrical components appropriate for use in an explosive atmosphere if electrical components are located within the compartment.

(5) Subsection (1) to (4) apply whether the compressed gas cylinder is stored vertically, horizontally or at an angle.