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Thin Wall Explosion-proof Enclosures.

Authors
Marinovic-N
Source
For Reference Only At Bureau Libraries Contract #14-09-0070- 1104-01 Jf470 :152 pages
Link
NIOSHTIC No.
10007412
Abstract
The main objective of this project was to investigate the feasibility of fabricating thin-walled, explosion-proof enclosures for high-voltage electrical equipment for use in underground coal mines. The thin-wall construction technique is to prestress the enclosure with an internal methane-air explosion, then remachine the mating surfaces of the flame path to allowable tolerances. Test results indicate that the prestressed enclosures, which are considerably lighter in weight than conventional enclosures, can withstand significantly higher internal pressures without detrimental permanent deformation and subsequent venting of incendiary particles. In addition, the use of stainless steel foams as flame arresters in large explosion-proof enclosures was investigated. Test data indicate that the enclosure pressures can be easily limited to less than 10 psi, using "retimet" for the explosion pressure vent.
Publication Date
19870101
Document Type
CP;
Fiscal Year
1987
NTIS Accession No.
NTIS Price
Identifying No.
OFR 34-89
Source Name
For Reference Only At Bureau Libraries. Contract #14-09-0070- 1104-01(Jf470)
Performing Organization
Electrotechnical Institute
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