CMC Asbestos Surveys: Asbestos Glossary - V

HSL investigation refutes asbestos claims over safe cement

The Health and Safety Laboratory (HSL) have investigated claims that chrysotile in asbestos cement changes into a non-asbestos fibrous material called Casitile. The claims also suggested that this process is 100% efficient and no chrysotile asbestos remains in the matrix and no release of airborne chrysotile fibres can occur.

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Vermiculite
A micaceous mineral that is sometimes used as a substitute for asbestos which is lightweight and highly water-absorbent.

Vibration
The periodic motion of friable asbestos containing building material (ACBM) which may result in the release of asbestos fibres.

Visible Emissions
Any emissions, which are visually detectable without the aid of instruments, coming from RACM or asbestos-containing waste material, or from any asbestos milling, manufacturing, or fabricating operation. This does not include condensed, uncombined water vapor.

Visual Inspection
An inspection of the enclosure by the Analyst to see if all the ACMs specified have been removed before carrying out an Airborne Fibre Count within this area.