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Base de datos CISDOC

ID (ISN) del documento24823
Número CIS 76-675
ISSN - Título de la serie 0097-6326 - Federal Register
Año 1974
Número de serie
Título Amendment to 30 CFR Parts 55 - Health and safety standards: metal and nonmetallic open pit mines; 56 - Health and safety standards: sand, gravel and crushed stone operations; and 57 - Health and safety standards: metal and nonmetallic underground mines.
Información bibliográfica Code of Federal Regulations, Title 30, Chapter 1. Bureau of Mines, Department of the Interior, Washington, D.C. Washington, D.C., USA, 7 Aug. 1974, Vol.39, no.153, p.28433-28434.
Resumen These amendments, dated 2 Aug. 1974, became effective on 7 Aug. 1974. The standards are revised to prescribe that no employee shall be permitted an exposure to noise in excess of 90dBA for 8h a day, 92dBA:6h, 95dBA:4h, 97dBA:3h, 100dBA:2h, 102dBA:1h30min, 105dBA:1h, 110dBA:30min, 115dBA:15min or less. No exposure to exceed 115dBA. Impact or impulsive noise not to exceed 140dBA peak sound pressure level. When the daily noise exposure is composed of two or more periods of noise exposure at different levels, their combined effect shall be considered rather than the individual effect of each.
Descriptores (primarios) Estados Unidos; industrias de extracción; lucha contra el ruido; ruido
Descriptores (secundarios) criterios de nocividad del ruido; ruido recurrente; nivel de ruido; ley; trabajos a cielo abierto; limitación de la exposición; trabajos subterráneos
Tipo de documento A - Leyes, reglamentos, directivas
País / Estado o ProvinciaEstados Unidos
Tema(s) Normas y directivas con fuerza de ley
Broad subject area(s) Riesgos físicos
Navegación por categoria(s) Mining and quarrying
Noise