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A study of explosion-proof enclosures.
Cox PA; Burnside OH; Esparza ED; Lin FD; White RE
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 96-83, 1982 Dec; :1-426
The purpose of the initial research performed under this contract was to determine the margins of safety in explosion-proof (xp) enclosures that were designed and certified according to schedule 2g. Results from this work provide baseline data on the current schedule, from which a new schedule can be formulated to give equal or greater levels of safety. Results and discoveries in the initial work led to an expansion of the contract to cover, additionally, weld quality in enclosure fabrication, reliability of enclosures with windows and lenses, and performance tests for enclosure qualification. Finite element calculations and hydrostatic tests revealed wide variations in the margins of safety in the enclosures studied; however, only one enclosure had a safety factor of less than one.
Mining equipment; Enclosures; Explosion proofing; Housings; Dynamic structural analysis; Dynamic loads; Welds; Vibration; Finite element analysis; Hydrostatic tests; Mine safety
CP; Final Contract Report
NTIS Accession No.
OFR 96-83; Contract-H0377052
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 96-83
Southwest Research Institute, San Antonio, Texas
Page last reviewed: November 12, 2021
Content source: National Institute for Occupational Safety and Health Education and Information Division