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Base de datos CISDOC
ID (ISN) del documento | 27443 |
Número CIS |
77-1081 |
Año |
1976 |
Número de serie |
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Autor(es) |
Guidance Note, EH 15/76, Health and Safety Executive, London. |
Título |
Threshold limit values for 1976. |
Información bibliográfica |
H.M. Stationery Office, P.O. Box 569, London SE1 9NH, London, United Kingdom, 1976. 20p. 45 ref. |
Resumen |
This note reproduces the list of threshold limit values (TLVs, expressed in ppm or mg/m3) adopted by the American Conference of Governmental Hygienists in 1976 for over 500 hazardous substances which may be absorbed in the form of dust or fume in workroom air. A preface discusses briefly chemical contaminants, advantages and disadvantages of ceiling as against time-weighted average limits, nuisance particulates as opposed to fibrogenic dusts, biologic limit values, asphyxiants, etc. TLVs for mineral dusts, notice of intended changes in the list (especially carcinogens, e.g. 4-aminobiphenyl, benzidine, beta-naphthylamine, 4-nitrobiphenyl, bis(chloromethyl) ether, hexamethylphosphoramide, 7,12-dimethylbenz(a)anthracene, etc.), substances of variable composition, welding fumes, mixtures, some nuisance particulates, some inert gases and vapours (simple asphyxiants), etc. are appended. Different TLVs for some of these substances are recommended for the U.K. (in particular for asbestos, CO, cotton dust, 4,4'-methylenebis(2-chloroaniline), mica, talc and vinyl chloride). The 1976 list introduces individual values for short term exposure limits for the various substances. A set of tentative guidelines for grading experimental animal carcinogens into high, intermediate, and low potency is appended. |
Descriptores (primarios) |
valores umbrales; substancias nocivas; Reino Unido |
Descriptores (secundarios) |
límites de exposición excepcional; substancias cancerígenas; lista de valores umbrales; mezclas; polvos respirables |
Tipo de documento |
E - Libros, informes, actas |
Tema(s) |
Sustancias tóxicas y peligrosas
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Broad subject area(s) |
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Navegación por categoria(s) |
Occupational exposure limits
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