NFPA issued the following recommendation for residential sprinklers and antifreeze:
“If there is an antifreeze solution in the system, as an interim measure, drain the system and replace it with water only. Problems associated with freezing of sprinkler pipes can be mitigated by alternative measures such as insulation. NFPA hopes to provide further guidance based on additional testing before the winter freezing months.”
A copy of the California Explosion Report where “the blast caused window glass to be blown more than 86-feet … caused an interior door .. to be pulled out approximately 3-inch from the frame” can be found here Antifreeze Report.
