Heat tracing (also known as heat tape), typically employed in commercial applications, is one way of providing freeze protection for fire sprinkler systems. So, if antifreeze isn’t an option in a particular wet system, what can be used? Regardless, the additional maintenance and testing requirements make antifreeze complicated to use. Antifreeze has traditionally been the preferred way of handling this problem, but its flammability has caused serious concerns about its safety – and it was due to be phased out entirely before the recent listing of a new, safer solution.
To ensure fire sprinklers are protected against freezing, the National Fire Protection Association (NFPA) requires that water-filled sprinkler systems be maintained at a minimum temperature of 40☏ (4☌), unless an approved antifreeze solution is used. However, like any other pipe carrying water, there is a danger of breakage or blockage when it freezes, causing costly damage and preventing the system from working in an emergency.
#HEAT TAPE FOR PIPES INSTALL#
They are also less complex to install and maintain than preaction or dry pipe sprinkler systems, where the delivery of water in a fire can be delayed up to 60 seconds. Wet fire sprinkler systems have many advantages since the pipes are always filled with water, they are ready to release it instantly against any fire hazard. Image source: PHCP Pros Heat tracing, also known as heat tape, is an option to protect fire sprinkler pipe from freezing
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