Citation

Ingason H. Fire Technol. 1993; 29(4): 317-331.

Affiliation

Swedish National Testing and Research Institute, Boras, Sweden

Copyright

(Copyright © 1993, Holtzbrinck Springer Nature Publishing Group)

DOI

10.1007/BF01052527

PMID

unavailable

Abstract

The response of sprinklers mounted in a paint spray booth is usually influenced by paint covering the heat-sensitive element. To avoid this problem, sprinklers are often covered to prevent the paint from accumulating on the heat-sensitive element. The influence of various numbers of paint layers and different types of covers on the response time of two different types of glass bulb sprinkler heads has been investigated. Both wind-tunnel tests and large-scale fire tests were performed in the test series.
It was found that covers delayed the activation of the sprinklers considerably, though a faster response was obtained with a quick response sprinkler than with a standard response sprinkler. It was found that the accumulated paint on the heat-sensitive element also affected the response time, but not nearly as much as the covers. It was also found that a paint layer covering both the glass bulb and the frame acted as a glue; the consequence was that the spray pattern of the sprinkler was considerably affected.