Buildings or workplaces that have had asbestos removed by licensed asbestos removalists must be assessed or cleared to determine if they are safe for re-occupation/demolition.
Asbestos Clearance inspections should be conducted by a licensed and independent assessor.
Protec Consulting has a team of experienced licensed asbestos assessors who are fully trained the clearance processes which includes air monitoring in line with the approved code of practice.
STAGE 1: PRELIMINARY CHECK OF SITE CONDITION AND JOB COMPLETENESS
Our analyst will establish the scope of work and ascertain whether it has been carried out accordingly. They will also check the site files to ensure all associated information is present and up to date.
Once complete they will then conduct a visual assessment of the site to check that the removal enclosure is intact, that the site decontamination unit is operational and the work area, transit and waste routes are free from unnecessary clutter and any obvious contamination that has arisen as a result of the removal work.
Once we are happy these conditions are met and that we can begin an inspection of the work enclosure including smoke testing as applicable, we then sign off and move onto stage two.
STAGE 2: A THOROUGH VISUAL INSPECTION INSIDE THE ENCLOSE/WORK AREA
Initially, the analyst will inspect the removal area to check for any residual material or fallen debris, but all areas of the enclosure, including the airlocks and baglocks, are debris and dust free.
Microscopic asbestos contamination is easily spread within the enclosure during the removal process so it is important to inspect all surfaces within the work area to ensure they have been suitably cleaned.
Once deemed clean to a suitable standard, the analyst can move onto stage three, otherwise the licensed contractor may be required to continue cleaning.
STAGE 3: AIR MONITORING
Testing and analysis for asbestos fibres (including asbestiform fibres that fit the respirable criteria) is then carried out.
The work enclosure is brushed at the start of the sample run to disturb any unseen fine settled dust that is likely to contain asbestos fibres. Such dust could give rise to high levels of exposure during the dismantling of the enclosure or subsequent cleaning/maintenance activities in the work area.
Samples are collected on filters which are removed from the enclosure and counted on-site using PCM (Phase Contrast Microscopy).
Should the air tests be assessed as suitably clean, stage 3 can be signed of ready for the dismantling of the removal enclosure.