4.2 Codes, Testing, Inspection & Maintenance

The Code Framework

Fire alarm work is governed by a stack of documents, and FAS-I expects you to know which one controls what:

• NFPA 72 (National Fire Alarm and Signaling Code) - design, installation, inspection, testing, and maintenance (ITM) of the system.
• NFPA 70 (National Electrical Code, NEC) Article 760 - the wiring methods, cable types, and circuit power limits for fire alarm.
• Building and fire codes (such as the International Building Code and International Fire Code, or NFPA 1) - these adopt NFPA 72 and 70 by reference and decide where systems are required.
• Authority Having Jurisdiction (AHJ) - the local official (fire marshal, building inspector) who interprets, approves, and enforces. The AHJ has final authority on a project and can be stricter than the code minimum.

Acceptance vs Periodic Testing

Two different testing events use different rules:

• Acceptance testing happens when a system is new or modified. 100% of devices and functions are tested before the system is placed in service, witnessed where required by the AHJ, and recorded on completion documents. Nothing goes live until acceptance passes.
• Periodic (ongoing) testing happens on a recurring schedule for the life of the system, defined by NFPA 72 Chapter 14 tables. It keeps the installed system reliable but does not retest everything every time.

Exam trap: acceptance is once, at 100%; periodic is repeating, on a frequency table. Do not confuse the two.

Visual Inspection vs Functional Test

These terms are not interchangeable:

• Visual inspection confirms by eye that a device is present, correct, unobstructed, and undamaged - for example, a strobe is not painted over, a detector is not clogged, wiring is intact. No operation is performed.
• Functional test confirms the device actually works: trigger a detector with listed test smoke or magnet, operate a pull station with a test key, flow water at a flow switch, and verify the control unit receives the correct signal and any outputs (notification, relays) respond.

A device can pass a visual inspection and still fail a functional test, which is why both are required.

Common Inspection & Test Frequencies

NFPA 72 Chapter 14 sets the schedule. Level I candidates should recognize these common ones:

Use the open-book PDF to confirm exact intervals; memorize the headline ones (annual device tests, one-year sensitivity, battery checks).

Records, Documentation & the Record of Completion

Documentation proves the system meets code:

• The Record of Completion is the master document filled out when a system is installed or modified. It lists the system description, devices, circuits, power sources, and the parties responsible, and it is signed by the installer and accepted by the owner/AHJ.
• Inspection and testing forms log each periodic event, what was tested, the results, and any deficiencies.
• Records are retained (typically for the life of the system plus one additional test cycle) and made available to the AHJ.

Good documentation is also the technician's protection: it shows the work was done to NFPA 72.

Impairment & Out-of-Service Procedures

When a system or part of it is taken offline for service, repair, or construction, it is impaired and the building loses protection. The technician must:

1. Notify the AHJ, the building owner/occupants, and any supervising/monitoring station before and after the impairment.
2. Tag the system as out of service so others know.
3. Provide interim protection (such as a fire watch) where required for an extended impairment.
4. Restore the system, test the affected portion, and notify all parties that protection is back in service.

Never leave a system silently impaired; that is a life-safety and liability failure.

Trouble vs Alarm vs Supervisory Signals

The panel reports three distinct signal types, and confusing them is a classic exam error:

• Alarm: a fire condition. Examples: a smoke detector activates, a pull station is operated, a waterflow switch detects flowing water. Alarm drives evacuation notification.
• Supervisory: a condition that impairs the protection but is not yet a fire. Examples: a sprinkler control valve tamper switch (valve closed), low air pressure, low water level. It warns that the system may not perform.
• Trouble: a fault in the system itself. Examples: an open circuit (broken wire), a ground fault, loss of primary power, or a low battery. The panel must annunciate trouble distinctly so it gets repaired.

Memory hook: alarm = fire, supervisory = something is wrong with the protection, trouble = something is wrong with the wiring or power.