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Defence Infrastructure Division

Randwick Barracks - AWD and LHD Ship Facilities Project

Air Monitoring

Why Air Monitoring is Conducted

Air monitoring is conducted to monitor potential airborne asbestos fibres release during asbestos works. The results of the air monitoring can be used:

  • To identify failures in containment;
  • To identify poor work practices; and
  • To provide proof of containment control measures for occupiers, stakeholders and regulatory authorities and to
  • Provide evidence of good work practices for both present and future needs.

Safety Standards for Asbestos Air Monitoring

The WHS Regulation (2011) requires the following actions to be implemented upon review of daily asbestos air monitoring results.

Table: Asbestos Air Monitoring Concentration
Table 1 - Asbestos Air Monitoring Action Level Criteria Results / Concentration Action Required
0 - < 0.01 fibres/mL No actions required, works can continue
0.01 - < 0.02 fibres/mL A review of control measures is to be completed
0.02 fibres/mL or higher Stop work. Notify the regulator (WorkCover NSW). Identify the source of fibre release

It should be noted that the National Exposure Standard for asbestos fibres is set at 0.1 fibres/mL. The minimum action level criteria is set at a magnitude of ten times less than this level, meaning that action is taken before there is a potential exposure risk. All Asbestos Air Monitoring events are completed in accordance with the Australian Government's National Occupational Health and Safety Commission Guidance Note on the Membrane Filter Method for Estimating Airborne Asbestos Fibres - 2nd Edition {NOHSC: 3003 (2005)}.