What color impairment tag is used when a standpipe or sprinkler system is out of service for repairs?

The color red is designated for tagging a standpipe or sprinkler system that is out of service for repairs. This red tagging serves a critical purpose: it is a clear and universally recognized signal that the system is not operational and that extra caution should be exercised in the area. By using a color that stands out, it alerts firefighters, safety personnel, and building occupants to the potential hazards inherent in relying on an impaired fire protection system. This visual cue is vital for ensuring that proper protocols are followed and that alternative safety measures are taken during the period when the system is being serviced.