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: …

Color Loss in Glass Bulb Sprinklers

Cold environments can be challenging for any equipment and mechanical component. However, when there is concern about a sprinkler, life and property safety could be at risk. It has been noticed that glass bulb fire sprinklers could lose the color of the liquid inside the glass bulb when subjected to cold temperatures, such as those found in coolers and freezers. …