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Base de datos CISDOC

ID (ISN) del documento30433
Número CIS 78-1836
ISSN - Título de la serie 0019-9109 - Industrie-Lackier-Betrieb
Año 1977
Número de serie
Autor(es) Hess H., Liere H.
Título Safety in electrostatic powder coating
Título original Sicherheit beim EPS-Verfahren [en alemán]
Información bibliográfica 1977, No.4, p.133-136. Illus.
Resumen The types of powder used are generally flammable when mixed with air in certain concentrations, and these always occur in the neighbourhood of the spray guns and powder recovery equipment. Ignition can be produced by electrostatic discharges with an energy of at least 5mWs. Conditions leading to spark production between the gun and the workpiece in the booth are examined. Primary safety measures against hazardous accumulation of electrostatic charges on the workpiece are described: control of the insulation resistance of the workpiece (maximum 1 megaohm) before it enters the booth; electrostatic earthing, interlocked with the equipment. Secondary measures: automatic fire detectors interlocked with the booth equipment; automatic extinguishing system; flame arrester in the pipework between the recovery equipment and the spray booth; shut-off valve actuated by the explosion shock wave; explosion vents in the recovery plant; explosion suppression by extinguishers. Recommendations are made for cleaning the booth.
Descriptores (primarios) induccion por polvos electroestaticos; prevención de las explosiones; polvos inflamables; electricidad estática
Descriptores (secundarios) respiraderos de explosiones; medida de la resistencia eléctrica; energía de inflamación; eliminación de la electricidad estática; toma a tierra; dispositivos para la detección de la llama; supresión de la explosión; detección de incendios; protección automática contra el incendio
Tipo de documento -
Tema(s) Incendios, explosiones
Broad subject area(s)
Navegación por categoria(s) Electricidad
Surface treatment
Explosions