Loss of Fluid in Glass Bulb Sprinklers

From NFSA TechNotes Issue # 369 March 15, 2017 What would cause the loss of fluid in glass bulb sprinklers? Answer: There can be several causes for the loss of fluid in a glass bulb such as damage during shipment, handling and installation in the field. From a manufacturing standpoint, UL adopted a revision into its sprinkler standards in 2003 …

Replacing Sprinklers After a Fire

From NFSA’s Tech Notes #367 February 14, 2017 Is there a standard for replacing sprinklers after a fire? How many sprinklers would have to be replaced beyond the limits of the fire area? Answer: NFPA 25 contains annex language addressing this situation. Annex section A.5.2 of the 2017 edition of NFPA 25 (similar language in earlier editions) reads as follows: …