Which items should be included in detector maintenance records?

• A. Calibration dates, test results, sensor replacement, and alarm history
• B. Calibration dates only
• C. Test results only
• D. Alarm history only

Answer: (A)

Keeping detector records complete and up-to-date is essential because it shows the detector’s performance over time and proves it’s ready to protect lives and property. The best practice is to document calibration dates, test results, sensor replacement, and alarm history together.

Calibration dates show when the detector was last adjusted to ensure its readings are accurate. Without this, you wouldn’t know if the device could be drifting out of spec and giving false readings or missing real threats.

Test results confirm that the detector responds appropriately to test stimuli and meets sensitivity and reliability standards. This verifies that the device works as intended beyond just a calibration snapshot.

Sensor replacement records track the replacement or servicing of sensing elements, batteries, or related components. Sensors have a finite life, and keeping notes on when they’re replaced helps anticipate future maintenance and prevents unnoticed degradation.

Alarm history provides a record of all alarm events and responses, helping identify nuisance alarms, trends, or repeated issues that may require system adjustments or investigations.

Focusing on only one aspect (calibration, tests, or alarms) leaves gaps in maintenance history and could hinder audits or reveal noncompliance. All four elements together give a complete, traceable picture of detector health and readiness.