Document ID: chunk:federal_register_of_legislation:F2016L00423:body:0:p38
Version: federal_register_of_legislation:F2016L00423
Segment Type: other
Provision Reference: 
Character Range: 98507–101356

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 the new wall to prevent collisions that may occur when the front-end loader is operating inside the warehouse. These changes are included in the asbestos register. The condition of the AC sheet is also monitored as well as the newly installed control measure.

7.3         Encapsulation and sealing asbestos
If the asbestos cannot be removed or enclosed, encapsulation or sealing is the next appropriate control measure. For example, if the asbestos is weathered, damaged or broken, it should be removed.

What is encapsulation?
Asbestos that is encapsulated in a resilient matrix, for example in reinforced plastics, vinyls, resins, mastics, bitumen, flexible plasters and cements have little opportunity to release airborne asbestos unless the matrix is damaged. This type of encapsulation will seal any loose fibres into place and should be used only when the original asbestos bond is still intact. Although encapsulation has limited application and can create a health risk for workers undertaking the activity, it is used when it would create a greater risk to remove the asbestos.
Encapsulation helps protect the asbestos from mechanical damage, increases the length of serviceability of the product and may also be used to prevent the release of airborne asbestos during the removal process.
If encapsulation is recommended, the person carrying out the work should:
    * be trained and experienced in working with asbestos
    * isolate the area
    * use suitable RPE that complies with AS/NZS 1716:2003 Respiratory Protective Devices
    * wear suitable protective clothing such as disposable overalls
    * follow a safe system of work that reduces the risk of creating airborne asbestos
    * follow a decontamination procedure upon completion of the task.

What is sealing?
Sealing is the process of covering the surface of the material with a protective coating over the asbestos to prevent exposure to airborne asbestos. Sealing asbestos is the least effective method for controlling the release of airborne asbestos. It should only be considered as an interim control while a more effective control such as removing or enclosing can be implemented. It is commonly used for pipe, furnace and boiler insulation. The process either coats the material, reducing fibre release, or binds the fibres together. Asbestos should be sealed, coated or painted to protect it. Sealing is inappropriate where the sealed material is likely to suffer mechanical damage (for example, drilling or sanding).
It is important to select coating that is appropriate to the material to be sealed and has the required fire resistance, thermal insulation and