Appendix B – Asbestos risk control options Method of Not appropriate Description Appropriate when: Advantages: Disadvantages: control when: Removal Removal of asbestos must be Surface friable or Located on complex or Hazard removed Increases immediate risk performed under certain controlled asbestos poorly bonded inaccessible areas. and no further of exposure especially to conditions, depending on the type of to substrata. action required. removal workers. Removal extremely ACM to be removed. Where Asbestos is severely difficult & other Cost-effective Creates major demolition or refurbishment works damaged or liable to techniques offer long term option. disturbance in building. are to occur, and this work is likely to further damage or satisfactory Highest cost, most impact on ACM, the ACM must be deterioration. alternative. complex & time removed under controlled conditions Located in A/C duct. consuming method. prior to the commencement of any Airborne asbestos Removal may increase site works. monitoring results fire risk within building; exceed recommended substitute required. exposure standard. Possible contamination of Other control techniques structure and increase in inappropriate. airborne fibre levels in adjacent occupied areas if the removal program is not strictly controlled. Encapsulate Coating of the outer surface of the Removal difficult or not Asbestos Quick and Hazard remains. ACM by the application of some form feasible. deteriorating. economical for or Seal Cost for large areas may of sealant compound that usually repairs to Firm bond to substrata. Application of sealant be near removal cost. penetrates to the substrate and damaged areas. may cause damage to Damage unlikely. Eventual removal may be hardens the material making it material. May be more difficult and costly. Short life structure. impermeable to asbestos. adequate Water damage likely. Readily visible for Helps protect the ACM from technique to Large areas of mechanical damage, and is designed control release of
Appendix B – Asbestos risk control options Method of control Description Appropriate when: Not appropriate when: Advantages: Disadvantages: Removal Removal of asbestos must be performed under certain controlled conditions, depending on the type of ACM to be removed. Where demolition or refurbishment works are to occur, and this work is likely to impact on ACM, the ACM must be removed under controlled conditions prior to the commencement of any site works. Surface friable or asbestos poorly bonded to substrata. Asbestos is severely damaged or liable to further damage or deterioration. Located in A/C duct. Airborne asbestos monitoring results exceed recommended exposure standard. Other control techniques inappropriate. Located on complex or inaccessible areas. Removal extremely difficult & other techniques offer satisfactory alternative. Hazard removed and no further action required. Cost-effective long term option. Increases immediate risk of exposure especially to removal workers. Creates major disturbance in building. Highest cost, most complex & time consuming method. Removal may increase fire risk within building; substitute required. Possible contamination of structure and increase in airborne fibre levels in adjacent occupied areas if the removal program is not strictly controlled. Encapsulate or Seal Coating of the outer surface of the ACM by the application of some form of sealant compound that usually penetrates to the substrate and hardens the material making it impermeable to asbestos. Helps protect the ACM from mechanical damage, and is designed Removal difficult or not feasible. Firm bond to substrata. Damage unlikely. Short life structure. Readily visible for Asbestos deteriorating. Application of sealant may cause damage to material. Water damage likely. Large areas of Quick and economical for repairs to damaged areas. May be adequate technique to control release of Hazard remains. Cost for large areas may be near removal cost. Eventual removal may be more difficult and costly.
WHS%20Management%20System%20-%20Asbestos%20Management%20Procedure%20%28PRO-01752%29.DOCX