What shall be posted at each fire department connection and system control valve indicating which system, or part thereof, has been removed from service?

• A. Out of service placard
• B. Impairment tag
• C. Maintenance notice
• D. Service bulletin

Answer: (B)

When a portion of a fire protection system is taken out of service, an impairment tag is posted at each fire department connection and system control valve. This tag clearly communicates which system or portion is not operational, helping responders know what is unavailable during an incident. It typically includes the date, the person responsible, and sometimes the expected return-to-service date. While an out-of-service placard can convey a similar idea, impairment tag is the standard term and is the formal designation used for marking equipment that has been removed from service. Maintenance notices and service bulletins are mainly internal communications rather than field markings at the device locations.