Asbestos: Difference between revisions
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The importation, supply and use of all asbestos has been banned in the UK since 1999; the amhibole type has been banned since 1985<ref name="gov" />. Prior to use being banned, [[asbestos]] was used in many products including insulation material for buildings, boilers and pipes, car brakes, floor tiles and in 'artex' wall and ceiling decoration. | The importation, supply and use of all asbestos has been banned in the UK since 1999; the amhibole type has been banned since 1985<ref name="gov" />. Prior to use being banned, [[asbestos]] was used in many products including insulation material for buildings, boilers and pipes, car brakes, floor tiles and in 'artex' wall and ceiling decoration. | ||
==Types of Asbestos<ref>[https://www.nationalasbestos.co.uk/types-of-asbestos/ National ASbestos Helpline]</ref>== | |||
There are six mineral tyoes of [[asbestos]] and these are split into two main clasees of asbestos: | |||
'''Serpentine''' - Serpentine class fibres are curly in appearance. There is only one member in this class of asbestos, called Chrysotile. | |||
*Chrysotile asbestos is obtained from serpentine rocks, which are found commonly throughout the world. Chrysotile appears under the microscope as a white fibre. This type of asbestos has been used more than any other, as it is more flexible than any of the Amphibole class asbestos and can be spun and woven into a fabric. Its most common use has been in corrugated asbestos cement roof sheets typically used for outbuildings, warehouses and garages. It may also be found in sheets or panels used for ceilings and sometimes for walls and floors. Chrysotile has been a component in joint compounds and some wall plaster. Numerous other items have been made containing chrysotile, including brake linings, fire barriers in fuse boxes, pipe insulation, floor tiles, and gaskets for high temperature equipment. | |||
'''Amphibole''' - Amphibole class fibres are needle-like in form. the remaining five types of asbestos fall into this category including Crocidolite, Amosite, Tremosite, Anthophyllite and Actinolite. | |||
*'''Crocidolite asbestos''' is the fibrous form of the amphibole riebeckite. Crocidolite is seen under the microscope as a blue fibre. Often referred to as blue asbestos, it is considered the most hazardous. In 1964, Dr Christopher Wagner discovered an association between blue asbestos and the asbestos related cancer mesothelioma. Unbelievably, Bolivian-mined crocidolite was used in Kent Micronite cigarette filters in the 1950s. Blue asbestos was also formerly used in early gas masks | |||
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