The purpose and procedures
used in this survey are the same as for Type 1, except that representative
samples are collected and analysed for the presence of asbestos. Samples
from each type of suspect ACM found are collected and analysed to confirm
or refute the surveyors judgement.
If the material sampled is
found to contain asbestos, other similar homogeneous materials used in
the same way in the building can be strongly presumed to contain asbestos.
Less homogeneous materials will require a greater number of samples.
The number should be sufficient for the surveyor to make an assessment
of whether asbestos is or is not present. Sampling may take place simultaneously
with the survey, or as in the case of some larger surveys, can be carried
out as a separate exercise, after a Type 1 survey is complete.
Type 3: Full access sampling and identification survey (pre-demolition/major
refurbishment survey/s)
This type of survey is used to locate and describe as far as
reasonably practicable, all ACMs in the building and may involve destructive
inspection, as necessary, to gain access to all areas, including those
that may be difficult to reach.
A full sampling programme is undertaken
to identify possible ACMs and estimates of the volume and surface area
of ACMs is made. The survey is designed to be used as a basis for tendering
the removal of ACMs from the building prior to demolition or major refurbishment
so the survey does not assess the condition of the asbestos, other than
to note areas of damage or where additional asbestos debris may be expected
to be present.
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