Document ID: chunk:federal_register_of_legislation:F2016L00420:reg:15:p6
Version: federal_register_of_legislation:F2016L00420
Segment Type: reg
Provision Reference: reg 15 (pt 6/22)
Character Range: 202007–204648

flammable liquids and solids, self-reactive and oxidising substances as well as advice on how to manage the risks during the abandonment or removal of underground storage tanks.
GAS CYLINDERS (Gases under pressure)
Used or empty cylinders should be treated with the same precautions as for full cylinders, since residual hazards remain.

Testing and maintenance of gas cylinders
Gas cylinders need to be tested periodically to ensure that they remain safe to use.
A poorly maintained gas cylinder can leak, exposing workers to harmful or potentially explosive vapours, or fail catastrophically.  In-built safety features may also become inoperable over time. Details of inspection and testing for gas cylinders are provided in AS 2030.1: Gas cylinders – General requirements.
As a guide, gas cylinders should be tested every 10 years for dry gases and more frequently for damp or corrosive gases – check with the gas supplier if you need advice. The last test date will be stamped on the cylinder near the valve or on the collar, or on the foot ring of some small cylinders. If the test period has expired, the cylinder may be unsafe to use and it should not be refilled until it is re-tested (and receives a new date stamp). However, it is permissible to use up the cylinder's contents after its test date has expired, prior to testing. Alternatively it could be replaced with a new cylinder. Testing stations can give advice on disposal of a used cylinder if you wish to replace it. Owners of cylinders should keep records of testing and test dates.
Storage and handling of gas cylinders
Cylinders may be stored safely by following these steps:
    * any cap provided for use with a cylinder is kept in place on the cylinder at all times when the cylinder is not being filled and not connected for use
    * the cylinder valve is kept securely closed when not in use, including when empty (unless the cylinder is connected by permanent piping to a consuming device)
    * any removable valve protection cap or valve outlet gas tight cap or plug is kept in place
      on the cylinder at all times (unless the cylinder is being filled or connected for use)
    * keep the cylinder secured against unintended movement by installing chains preventing
      the cylinder from falling
    * do not lubricate valves or attempt repair of leaks – if the valve is not closing properly, immediately remove the cylinder to a safe area outdoors and seek expert assistance
    * have a water hose or fire extinguisher handy to put out any small fire close to the cylinder –
      a water spray can also be used to keep the cylinder cool in the event of