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Document ID (ISN)46044
CIS number 86-612
ISSN - Serial title 0409-2961 - Bezopasnost' truda v promyšlennosti
Year 1985
Convention or series no.
Author(s) Kačan V.N., Jakovlev V.S., Makal'skij L.M.
Title Danger of electrified dust aerosols
Original title Opasnost' ėlektrozarjažennogo pylevogo aerozolja [in Russian]
Bibliographic information June 1985, No.6, p.37-38. Illus.
Abstract The breaking up of rocks, as in mechanised coal mining, is accompanied by the formation of electrified dust aerosols. Corona discharges between electrified aerosols or between aerosol clouds and earthed bodies (metal objects, roofs, etc.) can, under certain conditions, cause an explosion of methane or airborne flammable dust. Criteria for the assessment of hazards due to electrostatic fields generated by the flow of electrified aerosols are the maximum allowable voltage (for corona discharges) and the potential of the field in the workings (for spark discharges). A calculation formula for maximum field potential is given. Initial data (total and specific charge of a dust cloud, dimensions and density of the cloud) and the estimated danger of methane or coal-dust explosion are tabulated.
Descriptors (primary) coal dust; coal-dust explosions; methane; determination of explosive limits; explosion prevention; coal mining; protection criteria; static electricity
Descriptors (secondary) explosions; mathematical analysis; explosion research; explosion hazards
Document type D - Periodical articles
Subject(s) Electricity
Broad subject area(s)
Browse category(ies) Electricity
Aliphatic and alicyclic hydrocarbons
Mining and quarrying
Explosions