Document ID: chunk:federal_register_of_legislation:F2016L00420:reg:15:p8
Version: federal_register_of_legislation:F2016L00420
Segment Type: reg
Provision Reference: reg 15 (pt 8/22)
Character Range: 206934–209947

to detect gas where an explosive atmosphere could develop and provide an automatic alarm before dangerous levels of gas are reached so that immediate action may be taken. The gas detector should emit an audible sound
      and have a visual display.

FLAMMABLE LIQUIDS IN PACKAGES AND IN BULK (Class 3 dangerous goods)
Australian Standard AS 1940: The storage and handling of flammable and combustible liquids provides guidance on the safe storage and handling of flammable and combustible liquids, including aspects such as package stores, bulk storage, tank design, pipework and valves.

ABANDONING OR REMOVING UNDERGROUND TANKS OF FLAMMABLE LIQUIDS
The WHS Regulations require notification to the regulator when an underground, partially underground or fully mounded tank containing flammable liquids or flammable gases is to be abandoned.  When the container no longer contains hazardous chemicals, placards and signs should be removed.
Any work on existing or abandoned underground tanks or associated pipework is potentially dangerous where residual levels of the flammable gases, liquids and vapours are present.  Introducing an ignition source may cause an explosion or other dangerous occurrence unless suitable procedures are adopted.
Tar-like deposits and sludge may have accumulated in the tank and pipe work. Flushing with
water may not remove them and vapour testing may not detect this. Exposure of these deposits
to air and sunlight under normal temperatures, or work involving heat (e.g. use of grinders or oxy-acetylene cutting), may release vapours creating a potential explosion hazard.
By following the steps listed below, the likelihood of dangerous occurrences can be minimised
or even eliminated:
    * Remove the tank from the ground and transport to a disposal area and arrange for the tank
      to be decommissioned.
    * Fill the tank with an inert solid material like concrete or sand.
    * If it is intended that the tank be used again (within two years), you can fill the tank with water and a corrosion inhibitor.
Further information on removal and disposal of underground tanks is available in Australian Standards, for example AS 4976: The removal and disposal of underground petroleum
storage tanks.

SELF-REACTIVE SUBSTANCES, FLAMMABLE SOLIDS, PYROPHORIC LIQUIDS AND SOLIDS, SELF-HEATING SUBSTANCES AND MIXTURES AND SUBSTANCES WHICH IN CONTACT WITH WATER EMIT FLAMMABLE GAS  (Class 4 dangerous goods)

There are a number of key considerations for controlling the fire risks from storing and handling
the above types of hazardous chemicals. These include:
    * ensuring non-combustible materials are used in the construction of buildings
      and storage areas
    * installing and maintaining appropriate fire protection systems
    * utilising separation distances (or barriers such as fire resistant screen walls)
    * ensuring ignition and heating sources are controlled within the storage and handling areas, for example, electrical equipment used in these areas is