The development of a system to suppress and extinguish fully developed coal dust explosions. Progress report. Report for Apr 1971--Jun 1972

Technical Report · Fri Sep 01 04:00:00 EDT 1972

OSTI ID:7293792

Johnson, L D; Canfield, J A; Lull, D B; Morris, T F

To develop a system to suppress coal dust explosions, a facility has been built and several devices tested. The facility is a 317-foot, 4.5-foot diameter shock tube, and to date 53 tests have been carried out with methane-air and methane/coal dust-air as the explosive mixtures. Suppression of slowly propagating (up to 300 ft/sec) flame fronts has been successfully carried out on two tests using the dry chemical extinguishing agent Purple K. Delivery of the material directly into the flame front seems to be required if effective suppression is to be accomplished. (GRA)

• Research Organization: Naval Weapons Lab., Dahlgren, Va. (USA)
• OSTI ID: 7293792
• Report Number(s): PB-221309/8; NWL-TN-T-1/73
• Country of Publication: United States
• Language: English

Related Subjects

01 COAL, LIGNITE, AND PEAT
012000* -- Coal
Lignite
& Peat-- Mining
016000 -- Coal
Lignite
& Peat-- Health & Safety
ALKANES
CARBONACEOUS MATERIALS
CHEMICAL REACTIONS
COAL
COAL MINES
COMBUSTION
CRYOGENIC FLUIDS
DUSTS
ENERGY SOURCES
ENGINEERING
EXPLOSIONS
FIRES
FLAME PROPAGATION
FLUIDS
FOSSIL FUELS
FUELS
HYDROCARBONS
METHANE
MINES
ORGANIC COMPOUNDS
OXIDATION
SAFETY ENGINEERING