Document ID: chunk:federal_register_of_legislation:F2016L00423:body:0:p37
Version: federal_register_of_legislation:F2016L00423
Segment Type: other
Provision Reference: 
Character Range: 95890–98707

measures must be put in place to eliminate any exposure, so far as is reasonably practicable, or to minimise exposure so far as is reasonably practicable, but always ensuring the exposure standard is not exceeded.
Specific instances where removal may be the best control measure include:
    * asbestos lagging on pipes
    * asbestos in plant
    * asbestos-contaminated dust (ACD)
    * loose fibre insulation
    * cracked or damaged fibreboard containing asbestos.
The Code of Practice: How to Safely Remove Asbestos provides detailed guidance on appropriate work methods and additional controls for the removal of asbestos.
If it is not reasonably practicable to remove asbestos, then other control measures must be implemented to ensure people are not exposed to airborne asbestos, including either enclosing or sealing the asbestos.

7.2         Enclosing asbestos
Where it is not reasonably practicable to remove asbestos, the preferred alternative control measure is enclosure.
This may be determined during the risk assessment by reviewing a range of issues including productivity, the condition of the asbestos, the risk it poses to health and cost. This is an interim control measure and should be supported through regular inspections by a competent person to identify if the asbestos requires removal due to damage or deterioration.

What is enclosure?
Enclosure is the creation of a structure built around the asbestos so that it is completely covered to prevent exposure of the asbestos to air and other substances. Enclosure creates a separate physical barrier that prevents access to the asbestos and therefore minimises the potential for exposure to airborne fibres. Enclosure should only be used on non-friable asbestos where removal is not reasonably practical and where the asbestos is at risk of damage from work activities. Consideration must be given when designing the enclosure for the need to provide access to the asbestos for regular inspection of its condition.

Example of enclosure of asbestos as a control measure:
A large dockside warehouse used for temporarily storing quantities of grain and stockfeed has walls made from a variety of materials, including AC sheet. Apart from the driver of a large front‑end loader that is briefly driven into the warehouse to load or unload the feed, there are no other workers who work in the warehouse. An inspection of the AC sheet identifies that it is in good condition and noted that areas of previous minor damage (broken sheets) have been repaired appropriately and there is minimal risk of fibre release. However, it is decided there is a chance the sheets may be damaged again and if so, a risk to health may occur if fibres are released. A solid false wall is constructed to enclose the AC sheet and bollards are erected in front of