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A study of explosion-proof enclosures.

Authors
Cox-PA; Burnside-OH; Esparza-ED; Lin-FD; White-RE
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 96-83, 1982 Dec; :1-426
Link
NIOSHTIC No.
10002903
Abstract
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.
Keywords
Mining equipment; Enclosures; Explosion proofing; Housings; Dynamic structural analysis; Dynamic loads; Welds; Vibration; Finite element analysis; Hydrostatic tests; Mine safety
Publication Date
19821201
Document Type
CP; Final Contract Report
Fiscal Year
1983
NTIS Accession No.
PB83-205450
NTIS Price
A20
Identifying No.
OFR 96-83; Contract-H0377052
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, OFR 96-83
State
PA; TX
Performing Organization
Southwest Research Institute, San Antonio, Texas
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