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Author
Heskestad, G. | Delichatsios, M. A.
Title
Environments of Fire Detectors. Phase 2. Effect of Ceiling Configuration. Volume 1. Measurements.
Coporate
Factory Mutual Research Corp., Norwood, MA
Sponsor
National Bureau of Standards, Gaithersburg, MD
Report
NBS GCR 78-128, June 1978, 172 p.
Distribution
Available from National Technical Information Service
Contract
GRANT-69001
Keywords
beams | ceiling height | detectors | fire detectors | fire growth | heat detectors | room fires | smoke detectors | spacing | velocity
Abstract
This report describes Phase II of a sustained research program to map ceiling environments to which fire detectors are exposed. Phase I, reported previously, concerned flat, horizontal ceiling of large extent. Phase II extends ceiling measurements of temperature, velocity and optical density to six different beam configurations in extensive, horizontal ceilings. As in Phase I, the response times of variously located sets of fire detectors were measured (three types of heat detectors, an ionization detector and a photoelectric smoke detector). A total of 21 fire tests were conducted. The reduced data are presented in two tables, one listing detector response times and the other listing environmental data. Analysis of the data is presented in a second volume (Volume II).