NIOSHTIC-2 Publications Search

Detector Response to Both Fire and Non-fire Contaminants.

Authors
Egan-MR; Litton-CD
Source
Ch 7 in Proc SME Annual Meeting SME 1992 :69-80
Link
NIOSHTIC No.
10011286
Abstract
To reduce the number of nuisance fire alarms in underground mines that use diesel-powered equipment, the U.S. Bureau of Mines has developed a diesel-discriminating fire detector (ddd). It was designed to discriminate between smoke produced by a fire and the smoke-laden exhaust of a diesel engine. Welding and cutting with arc or flame can also produce combustion products capable of triggering nuisance alarms. In this report, the response of the ddd to the emissions from diesel exhaust, arc welding, and flame cutting are compared to the response of conventional smoke and carbon monoxide (co) detectors. The data show that when the ddd is set at an alarm threshold of 0.05 V, it will reliably detect a developing conveyor belt fire while remaining insensitive to other sources of nuisance combustion products. The alarm times of the three types of detectors were also compared. The ddd alarmed first in response to a smoldering conveyor belt in two of four experiments.
Publication Date
19920101
Document Type
OP;
Fiscal Year
1992
Identifying No.
OP 60-92
NIOSH Division
PRC;
Source Name
Ch. 7 in Proc., SME Annual Meeting. SME, 1992, PP. 69-80
State
PA
Page last reviewed: April 12, 2019
Content source: National Institute for Occupational Safety and Health Education and Information Division