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Part 5 Chemical Agents and Biological Agents

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Substances Under Pressure

5.36 Containers

(1) A tank, cylinder, bottle or other vessel containing a substance under pressure, together with any associated pressure or flow regulator and piping or conveyance system, must be

(a) protected from sparks, flames, excessive heat, physical damage, electrical contact or corrosion, and

(b) equipped with suitable pressure relief mechanisms installed so that no worker will be endangered in the event of discharge.

(c) Repealed. [B.C. Reg. 312/2003, effective October 29, 2003.]

* See section 4.3 of the of the OHS Regulation.

(2) Hand-held aerosol spray cans are exempt from the requirements of subsection (1)(b).

       [Amended by B.C. Reg. 312/2003, effective October 29, 2003.]

5.37 Pressure testing

A compressed gas container which requires pressure testing must bear a valid and current indication that it has been pressure tested.

5.38 Handling and securing cylinders

(1) A compressed gas cylinder must not be hoisted by a sling or magnet, dropped, subjected to impact, handled by the regulator or used as a roller or work support.

(2) A compressed gas cylinder must be secured to prevent falling or rolling during storage, transportation and use, and where practicable, must be kept in the upright position.

5.39 Cylinder markings

A compressed gas cylinder must be marked to indicate its rated pressure and the type of gas it contains.

5.40 Cylinder valves

(1) The valve on a compressed gas cylinder must be kept closed when the cylinder is empty or not in use.

(2) A worker must not stand directly in front of a regulator attached to a compressed gas cylinder when the cylinder valve is being opened.

(3) Any valve, regulator or fitting connected to a compressed gas cylinder must be a standard fitting, designed and manufactured for the type of cylinder and compressed gas for which it will be used, and must include provisions for flashback arresters where necessary.

(4) Unless a compressed gas cylinder is equipped with an integral valve guard, the valve cover must be in position when the cylinder is not connected for use.

5.41 Fittings

Only standard fittings designed for the specific compressed gas service may be used with a compressed gas system.

5.42 Regulator maintenance

Repealed. [B.C. Reg. 312/2003, effective October 29, 2003.]

* See section 4.3 of the of the OHS Regulation.

5.43 Empty cylinders

An empty compressed gas cylinder must be identified as being empty and must be stored separately from other compressed gas cylinders.

5.44 Acetylene cylinders

(1) A compressed gas cylinder containing acetylene must be used only in the upright position.

(2) If the cylinder has been stored or transported in a horizontal position, it must be placed in the upright position for at least 1 hour before it is used.

(3) A suitable device for closing the valve on an acetylene cylinder must be immediately available when the cylinder is connected for use.

5.45 Restriction on use of copper

A fitting or tube made of copper or any alloy containing more than 67% copper must not be used in a system carrying acetylene gas, except for copper torch tips and lengths of copper tubing 30 cm (1 ft) or less in length which are open to the atmosphere.

5.46 Restriction on use of oxygen

(1) Oxygen gas must not be used in any circumstance where it can contact a substance that oxidizes readily, such as a petroleum product, natural fibre or metal powder.

(2) Oxygen gas must not be used to

(a) operate a pneumatic tool,

(b) start an internal combustion engine,

(c) clean equipment or clothing,

(d) create pressure in a container, or

(e) ventilate a workplace.

5.47 Cleanliness

A worker must not permit oil or grease to contact an oxygen cylinder valve, regulator, or fitting.

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Disclaimer: The Workers' Compensation Board of B.C. ("WorkSafeBC") publishes the online version of the Occupational Health and Safety Regulation ("OHS Regulation") in accordance with its mandate under the Workers Compensation Act to provide information and promote public awareness of occupational health and safety matters. The online OHS Regulation is not the official version of the OHS Regulation, which may be purchased from Crown Publications.

WorkSafeBC endeavours to update the online OHS Regulation as soon as possible following any legislative amendments. However, WorkSafeBC does not warrant the accuracy or the completeness of the online OHS Regulation, and neither WorkSafeBC nor its board of directors, employees or agents shall be liable to any person for any loss or damage of any nature, whether arising out of negligence or otherwise, arising from the use of the online OHS Regulation.

Employers are legally obligated to make a copy of the Workers' Compensation Act and the OHS Regulation readily available for review by workers. The circumstances under which WorkSafeBC may consider an employer's providing access to electronic versions of the Act and OHS Regulation to have satisfied this obligation are described in Guideline G-D3-115(2)(f).