Document ID: chunk:federal_register_of_legislation:F2016L00405:body:0:p14
Version: federal_register_of_legislation:F2016L00405
Segment Type: other
Provision Reference: 
Character Range: 35265–38004

testing of remote regions and different levels within the confined space.

Lighter gases may be vented into the breathing zone of the person conducting the tests. Some gases may be dissolved in liquids and released when the liquid is disturbed or a crust over the liquid is broken and it may therefore be necessary to agitate liquids before monitoring.
If it is necessary to enter the space to test remote regions away from entrances or access holes, then air-supplied respiratory equipment should be worn and the entry must be undertaken in accordance with the WHS Regulations using a confined space entry permit.
Re-testing and continuous monitoring of the air may be necessary if the risk assessment indicates that conditions may change due to the work being done or the disturbance of hazardous material in the confined space.

Generic risk assessment
A single (or generic) risk assessment may be carried out for a class of confined spaces in a number of different work areas or workplaces where the confined spaces are the same. This will only be appropriate if all of the hazards being covered are the same. A risk assessment must be carried out on individual confined spaces if there is any likelihood that a worker may be exposed to greater, additional or different risks.
A confined space entry permit may be used as a record of the risk assessment.

   5.        HOW TO CONTROL THE RISKS

The most important step in the risk management process involves controlling risks by eliminating them so far as is reasonably practicable, or if that is not possible, by minimising
the risks so far as is reasonably practicable.

    5.1         The hierarchy of control
The ways of controlling risks are ranked from the highest level of protection and reliability to
the lowest. This ranking is known as the hierarchy of control. The WHS Regulations require
duty holders to work through this hierarchy to achieve the highest level of protection that is reasonably practicable in the circumstances.

Eliminate the risk
The most effective control measure is to eliminate the risk, for example, by eliminating the need
to enter a confined space.

Minimise the risk
If it is not reasonably practicable to eliminate the risk, you must minimise the risks so far as
is reasonably practicable by:
    * substituting the hazard giving rise to the risk with something that is safer
    * isolating the hazard from any person exposed to it, or
    * implementing engineering controls.
If there is a remaining risk, it must be minimised so far as is reasonably practicable by implementing administrative controls, and if a risk still remains, then suitable personal protective equipment must be provided and used. These two types of control measures,