National Technical Reports Library

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Study of Explosion-Proof Enclosure.

PB83205450

Publication Date	1982
Personal Author	Cox, P. A.; Burnside, O. H.; Esparza, E. D.; Lin, F. D.; White, R. E.
Page Count	427
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 enclosures 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 Explosionproofing Housings Dynamic structural analysis Dynamic loads Welds Vibration Finite element analysis Hydrostatic tests Mine safety
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Bureau of Mines, Washington, DC.
Supplemental Notes	Color illustrations reproduced in black and white.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	198317
Contract Number	H0377052

Study of Explosion-Proof Enclosure.

Study of Explosion-Proof Enclosure.
PB83205450

Publication Date	1982
Personal Author	Cox, P. A.; Burnside, O. H.; Esparza, E. D.; Lin, F. D.; White, R. E.
Page Count	427
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 enclosures 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 Explosionproofing Housings Dynamic structural analysis Dynamic loads Welds Vibration Finite element analysis Hydrostatic tests Mine safety
Source Agency	Bureau of Mines
NTIS Subject Category	48A - Mineral Industries
Corporate Authors	Southwest Research Inst., San Antonio, TX.; Bureau of Mines, Washington, DC.
Supplemental Notes	Color illustrations reproduced in black and white.
Document Type	Technical Report
Title Note	Open file rept.
NTIS Issue Number	198317
Contract Number	H0377052