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Base de datos CISDOC

ID (ISN) del documento108717
Número CIS 08-1158
Año 2008
Número de serie DHHS (NIOSH) Publication No.2008-123
Autor(es) Ulery J.P.
Título Explosion hazards from methane emissions related to geologic features in coal mines
Información bibliográfica Publications Dissemination, National Institute for Occupational Safety and Health (NIOSH), 4676 Columbia Parkway, Cincinnati, OH 45226-2001, USA, Apr. 2008. 18p. Illus. 35 ref.
Acceso Internet [en inglés]
Resumen Explosions in coal mines are caused when buildups of explosive gas and/or dust are ignited by a flame or spark. Methane is normally contained in coal and is liberated during mining. Because this gas is explosive in the range of 5%-15% by volume in air, fresh air is constantly supplied to the working face to prevent the methane/air mixture from reaching this explosive range. The required amount of ventilation air is based on estimates of methane release under normal conditions. Occasionally, unanticipated and unusually high emissions are encountered, which, despite normal ventilation controls, result in an explosive mixture that a spark from a cutting bit or electrical equipment can easily ignite. Investigations have shown that such emissions are often associated with anomalous geologic features or conditions. This report provides operators with specific information on recognizing and alleviating potential hazards from methane emissions related to these geologic features.
Descriptores (primarios) factores geológicos; Estados Unidos; metano; mineria del carbón; explotación minera en el fondo; riesgos de explosión; factores de riesgo; riesgos de incendio
Descriptores (secundarios) sistemas de ventilación; técnicas de seguridad
Tipo de documento E - Libros, informes, actas
País / Estado o ProvinciaEstados Unidos
Tema(s) Minas y canteras
Incendios, explosiones
Broad subject area(s) Incendios, explosiones y riesgos mayores
Navegación por categoria(s) Natural phenomena
Aliphatic and alicyclic hydrocarbons
Mining and quarrying