ILO Home
Volver a la página de entrada
Site map | Contact us English | Français

Base de datos CISDOC

ID (ISN) del documento108718
Número CIS 08-1159
Año 2008
Número de serie DHHS (NIOSH) Publication No.2008-124
Título Frictional ignition of methane-air in the presence of liquid hydrocarbons
Información bibliográfica Publications Dissemination, National Institute for Occupational Safety and Health (NIOSH), 4676 Columbia Parkway, Cincinnati, OH 45226-2001, USA, Mar. 2008. 2p. Illus. 2 ref.
Acceso Internet http://www.cdc.gov/niosh/mining/pubs/pdfs/2008-124.pdf [en inglés]
Resumen Methane ignitions in underground coal mining are often caused by the impact of mining machine cutter bits on sandstone during the coal-cutting process. Most ignitions are small and limited to the cutter head location. However, under certain conditions, these ignitions can lead to larger methane explosions and/or fires with the potential for causing serious injury or death to the mining machine operator and other nearby miners. A series ignition tests were conducted in a test chamber, with various methane-air mixtures with and without the presence of liquid hydrocarbons on the sandstone. It was found that hydrocarbon vapours can ignite at significantly lower temperatures than the methane. Extra precautions to prevent fires and explosions must be taken when heavier molecular weight liquid hydrocarbons are present in addition to methane in an underground coal mine.
Descriptores (primarios) Estados Unidos; hidrocarburos; metano; mineria del carbón; explotación minera en el fondo; riesgos de explosión; factores de riesgo; riesgos de incendio
Descriptores (secundarios) técnicas de seguridad; sistemas de ventilación; pruebas de inflamabilidad; instituciones publicas de prevencion
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) Incendios
Aliphatic and alicyclic hydrocarbons
Mining and quarrying
Explosions