Which item indicates which portion of the system has been removed from service?

Which item indicates which portion of the system has been removed from service?

• A. Maintenance log
• B. Records the last maintenance date
• C. Indicates which system or portion is out of service
• D. Shows system age

Answer: (C)

In fire protection maintenance, you need a clear indicator that a portion of the system is not in service so everyone knows not to rely on that part during operation or testing. The option that communicates which specific system or portion is out of service is the one that would be marked with an out‑of‑service tag or placard. This directly tells operators and responders which components are temporarily disabled and should be avoided. The other items don’t serve that immediate clarity. A maintenance log records what work was done and by whom, not the current status of each component. The date of last maintenance shows recency but not whether a part is presently out of service. System age describes how long the equipment has existed, not its operational status.

In fire protection maintenance, you need a clear indicator that a portion of the system is not in service so everyone knows not to rely on that part during operation or testing. The option that communicates which specific system or portion is out of service is the one that would be marked with an out‑of‑service tag or placard. This directly tells operators and responders which components are temporarily disabled and should be avoided.

The other items don’t serve that immediate clarity. A maintenance log records what work was done and by whom, not the current status of each component. The date of last maintenance shows recency but not whether a part is presently out of service. System age describes how long the equipment has existed, not its operational status.