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Sunday, November 21, 2010
Asbestos is found naturally in the form of silicate-fiber serpentine (chrysotile) or amfibol (crocidolite, amosite, and anthophyllite).
Characteristics: Highly resistant to high temperature, pressure, and acid, but these properties vary according to the type of asbestos. Janis serpentine can be woven into clothing.
Usage: Many and varied, including asbestos cement, building materials and insulation, retaining brakes, and some fire-resistant equipment.
Metabolism: Stimulate severe and irreversible fibrosis in the body tissues.
Definition, Clinical, Diagnosis and Management of asbestosis
Health Effects
Acute: None.
Chronic: chronic fibrotic lung disease, asbestosis. Pleural plaque formation and perkapuran. Lung cancer (synergistic effect with smoking). Malignant mesotheliomas in the pleura and peritoneum. Skin warts. Carcinoma of the canine (?) And (perhaps too) ovaries.
Health Monitoring: National asbestos in the sputum. Lung function tests, including spirometry and gas ditusi. Serial chest radiographs.
Mesothelioma Cancer, Asbestos and Industrial
Treatment: Stay away from exposure. Management of chronic fibrotic lung disease and malignant disease.
Measurement: Need to determine the number of fibers respirabel by taking samples of air through cellulose acetate filters for microscopic analysis and calculations. Respirabel fiber whose length is defined as fibers longer than 5 pm and have a ratio of length: width of at least 3:1 and a diameter of less than 3 pm. Sampling should be conducted in accordance with the guidelines of HSE (The Health and Safety Executive) note EH10 and MDHS 39 / 3.
Standard control:
HSE control limits:
(A) for asbestos which consist of or contain crocidolite or amosite:
(I) 0.2 fibers / ml air during an average period of 4 hours continuously.
(Ii) is 0.6 fibers / ml air for an average period of 10 minutes continuously.
(B) for asbestos which consists of or contains other types of asbestos but not crocidolite or amosite:
(I) 0.5 fibers / ml air during an average period of 4 hours continuously.
(Ii) 1.5 serabut/m1 average air during a period of 10 minutes continuously. Legal requirements and HSE guidance:
The Control of Asbestos at Work Regulations, SI 1987, No. 2115 as amended by SI, 1988, No. 712.
The Asbestos (Licensing) Regulations, SI 1983, No. 1649.
The Asbestos (prohibitions) Regulations, SI 1985, No. 910.
Asbestos (Vol I) Final Report Advisory Committee (Simpson), HMSO, 1980.
Work with asbestos insulation and asbestos coating Approved Code of Practice and Guidance Note: the revised edition, HSC, 1983.
A guide to Asbestos (Licensing) Regulations HS (R), 19.
EH10 Asbestos-Control Limits, measurement of airborne dust concentrations and the assessment of control measures, (revised 1990).
EH35 Probable asbestos concentrations at construction processes, 1989.
EH36 Work with asbestos cement, 1989.
EH37 Work with asbestos insulation board, 1989.
EH41 Respiratory protective equipment for use against asbestos, 1985.
EH51 enclosures provided for work with asbestos insulation and coatings, 1989.
EH52 Removal techniques for asbestos insulation coatings and insulation, 1989. MDHS 39 / 3 MS 13.
Characteristics: Highly resistant to high temperature, pressure, and acid, but these properties vary according to the type of asbestos. Janis serpentine can be woven into clothing.
Usage: Many and varied, including asbestos cement, building materials and insulation, retaining brakes, and some fire-resistant equipment.
Metabolism: Stimulate severe and irreversible fibrosis in the body tissues.
Definition, Clinical, Diagnosis and Management of asbestosis
Health Effects
Acute: None.
Chronic: chronic fibrotic lung disease, asbestosis. Pleural plaque formation and perkapuran. Lung cancer (synergistic effect with smoking). Malignant mesotheliomas in the pleura and peritoneum. Skin warts. Carcinoma of the canine (?) And (perhaps too) ovaries.
Health Monitoring: National asbestos in the sputum. Lung function tests, including spirometry and gas ditusi. Serial chest radiographs.
Mesothelioma Cancer, Asbestos and Industrial
Treatment: Stay away from exposure. Management of chronic fibrotic lung disease and malignant disease.
Measurement: Need to determine the number of fibers respirabel by taking samples of air through cellulose acetate filters for microscopic analysis and calculations. Respirabel fiber whose length is defined as fibers longer than 5 pm and have a ratio of length: width of at least 3:1 and a diameter of less than 3 pm. Sampling should be conducted in accordance with the guidelines of HSE (The Health and Safety Executive) note EH10 and MDHS 39 / 3.
Standard control:
HSE control limits:
(A) for asbestos which consist of or contain crocidolite or amosite:
(I) 0.2 fibers / ml air during an average period of 4 hours continuously.
(Ii) is 0.6 fibers / ml air for an average period of 10 minutes continuously.
(B) for asbestos which consists of or contains other types of asbestos but not crocidolite or amosite:
(I) 0.5 fibers / ml air during an average period of 4 hours continuously.
(Ii) 1.5 serabut/m1 average air during a period of 10 minutes continuously. Legal requirements and HSE guidance:
The Control of Asbestos at Work Regulations, SI 1987, No. 2115 as amended by SI, 1988, No. 712.
The Asbestos (Licensing) Regulations, SI 1983, No. 1649.
The Asbestos (prohibitions) Regulations, SI 1985, No. 910.
Asbestos (Vol I) Final Report Advisory Committee (Simpson), HMSO, 1980.
Work with asbestos insulation and asbestos coating Approved Code of Practice and Guidance Note: the revised edition, HSC, 1983.
A guide to Asbestos (Licensing) Regulations HS (R), 19.
EH10 Asbestos-Control Limits, measurement of airborne dust concentrations and the assessment of control measures, (revised 1990).
EH35 Probable asbestos concentrations at construction processes, 1989.
EH36 Work with asbestos cement, 1989.
EH37 Work with asbestos insulation board, 1989.
EH41 Respiratory protective equipment for use against asbestos, 1985.
EH51 enclosures provided for work with asbestos insulation and coatings, 1989.
EH52 Removal techniques for asbestos insulation coatings and insulation, 1989. MDHS 39 / 3 MS 13.
Labels: Asbestos and Health work
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