What risk do freezing temperatures pose on fire sprinkler systems?

Freezing temperatures pose a significant risk to fire sprinkler systems primarily because they can lead to potential pipe bursts and ice blockage. When water inside the pipes freezes, it expands, which can cause the pipes to crack or burst. This not only compromises the integrity of the sprinkler system but also leads to water loss, which could render the system ineffective in the event of a fire. Additionally, ice can block the flow of water through the pipes, preventing the system from operating when needed.

While water supply contamination, excessive water pressure, and increased fire hazards are important considerations in fire safety, they are not directly related to the effects of freezing temperatures on the sprinkler system itself. The primary concern with freezing temperatures is ensuring that the water within the system remains liquid and capable of properly activating the sprinkler heads, preventing damage and ensuring effective fire suppression.