Skip directly to search Skip directly to A to Z list Skip directly to page options Skip directly to site content

NIOSHTIC-2 Publications Search

Search Results

Flame-powered trigger device for activating explosion suppression barrier.

Authors
Cortese-RA; Sapko-MJ
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9365, 1991; :1-10
Link
NIOSHTIC No.
10009158
Abstract
The U.S. Bureau of Mines has developed a flame-radiation-powered trigger device to explosively activate suppression barriers to quench gas and coal dust explosions. The major component of the device is a silicon solar panel, which converts radiation from the developing explosion into electrical energy to initiate an electric detonator, which releases an extinguishing agent into the advancing flame front. Solar panels that are rated to produce 20 w of electrical power when exposed to the sunlight are producing about 200 w when exposed to a full-scale dust explosion. The solar panel is electrically isolated from the detonator by a pressure-sensitive switch until the arrival of the precursor pressure pulse, which always precedes a deflagration. This combination of pressure arming and flame-powered photogenerator prevents false barrier activation and requires no external power supply.
Keywords
Blast-resistant-structures; Underground-explosions; Solar-panels; Coal-dust; Dust-explosions; Mine-gases; Barriers; Coal-mines; Explosion-proofing; Safety-engineering
Publication Date
19910101
Document Type
IH; Report of Investigations
Fiscal Year
1991
NTIS Accession No.
PB91230268
NTIS Price
A03
Identifying No.
RI-9365
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 9365
State
PA
TOP