NICET ITFAS key terms
NICET ITFAS · Get comfortable with the vocabulary.
- Inspection
- Related: Testing, Acceptance Test, Impairment
A visual and functional check that installed fire alarm equipment is present, undamaged, correctly mounted, and free of obvious conditions that would prevent it from operating as designed.
- Testing
- Related: Inspection, Acceptance Test, Reacceptance Test
The deliberate operation of a fire alarm component or circuit to confirm it performs its intended function, with results compared against the manufacturer's published performance criteria and the design documents.
- Acceptance Test
- Related: Reacceptance Test, Authority Having Jurisdiction, Record of Completion
The initial full verification of a newly installed fire alarm system, demonstrating to the authority having jurisdiction that every device, circuit, and interface operates in accordance with the approved design.
- Reacceptance Test
- Related: Acceptance Test, Record of Completion, Impairment
Verification performed after system modification, addition, or repair, limited to affected components plus verification that the system as a whole remains operational and correctly interconnected.
- Authority Having Jurisdiction
- Related: Acceptance Test, Record of Completion, NICET
The organization, office, or individual responsible for approving equipment, installations, and procedures, and for enforcing the fire code requirements that govern the installed system.
- Record of Completion
- Related: As-Built Drawings, Acceptance Test, Authority Having Jurisdiction
A document, typically part of the contractor's closeout package, listing installed devices, circuits, and system features, signed by the installer and certifying the work matches the approved plans.
- As-Built Drawings
- Related: Record of Completion, Zone, Addressable Device
Marked-up plans reflecting the actual installed locations, routing, and device addresses of the fire alarm system, used as the reference document for future inspection, testing, and maintenance.
- Initiating Device
- Related: Notification Appliance, Initiating Device Circuit, Alarm Signal
A component such as a manual pull station, smoke detector, heat detector, or waterflow switch that signals the control unit that a fire or other emergency condition exists.
- Notification Appliance
- Related: Initiating Device, Notification Appliance Circuit, Audible Signal
An audible, visible, or combination device such as a horn, speaker, strobe, or chime that alerts building occupants of an alarm or other system condition.
- Initiating Device Circuit
- Related: Initiating Device, Signaling Line Circuit, Conventional System
The wiring path connecting automatic and manual initiating devices to the fire alarm control unit, which may be conventional, addressable, or signaling line circuit based.
- Notification Appliance Circuit
- Related: Notification Appliance, Supervision, Audible Signal
The circuit that supplies power and control signals to audible and visible notification appliances, and which must be tested for voltage, current draw, and proper operation of all devices.
- Signaling Line Circuit
- Related: Addressable Device, Initiating Device Circuit, Supervision
A circuit that carries addressable data between the control unit and addressable devices, allowing individual device identification and monitoring of circuit integrity.
- Addressable Device
- Related: Signaling Line Circuit, Zone, Annunciator
A fire alarm component with a unique electronic address that the control unit can identify individually, enabling precise annunciation and targeted testing.
- Conventional System
- Related: Zone, Addressable Device, Initiating Device Circuit
A fire alarm arrangement in which devices are wired in zones on a common circuit, so the control unit identifies the zone rather than the individual device that activated.
- Zone
- Related: Conventional System, Annunciator, Addressable Device
A defined area or grouping of initiating devices whose activation is annunciated as a single location, used for conventional systems and for organizing addressable points.
- Annunciator
- Related: Zone, Trouble Signal, Supervisory Signal
A remote or local display panel that indicates the zone, device, or condition in alarm, trouble, or supervisory state, allowing responders to locate the event quickly.
- Alarm Signal
- Related: Initiating Device, Notification Appliance, Alarm Silence
The output of the system indicating that an initiating device has operated, which triggers notification appliances and is recorded and displayed by the control unit.
- Supervisory Signal
- Related: Trouble Signal, Waterflow Switch, Supervision
A signal indicating a condition that could impair the system's ability to respond to fire, such as a closed valve, low air pressure, or a device in an off-normal state.
- Trouble Signal
- Related: Supervisory Signal, Supervision, Impairment
An audible and visible indication that a circuit, component, or power supply has failed or is degraded, requiring investigation and repair to restore full protection.
- Supervision
- Related: Trouble Signal, Supervisory Signal, Notification Appliance Circuit
The monitoring of circuit integrity so that opens, grounds, or faults are detected and annunciated as a trouble condition rather than allowing silent failure.
- Waterflow Switch
- Related: Supervisory Signal, Valve Tamper Switch, Alarm Signal
A device that detects the movement of water in a sprinkler system and sends an alarm signal to the fire alarm control unit, subject to a specified time delay.
- Valve Tamper Switch
- Related: Waterflow Switch, Supervisory Signal, Impairment
A monitoring device that signals the control unit when a sprinkler control valve is moved from its fully open position, producing a supervisory condition.
- Smoke Detector
- Related: Heat Detector, Duct Detector, Detector Sensitivity
An automatic initiating device that senses smoke particles and signals the control unit, tested with calibrated aerosol or manufacturer-approved test methods rather than open flame.
- Heat Detector
- Related: Smoke Detector, Detector Sensitivity, Initiating Device
An automatic initiating device that responds to fixed temperature or rate of temperature rise, commonly tested with a heat source or manufacturer-approved test tool.
- Duct Detector
- Related: Smoke Detector, Detector Sensitivity, Initiating Device
A smoke detector mounted in an air handling duct that samples airflow to detect smoke, requiring testing with the duct system operating as designed.
- Detector Sensitivity
- Related: Smoke Detector, Heat Detector, Testing
A measure of how readily a detector responds to its target condition, verified during testing to confirm it remains within the manufacturer's listed range and is not drifting.
- Manual Pull Station
- Related: Initiating Device, Alarm Signal, Notification Appliance
A manually operated initiating device that lets a person trigger an alarm, tested by actuating the mechanism with the approved key or tool and verifying signal transmission.
- Primary Power Supply
- Related: Secondary Power Supply, Supervision, Battery Test
The normal commercial or on-site electrical source supplying the fire alarm control unit, required to be dedicated, labeled, and verified during inspection and testing.
- Secondary Power Supply
- Related: Primary Power Supply, Battery Test, Trouble Signal
The standby source, typically rechargeable batteries or a generator, that maintains the fire alarm system during loss of primary power for a specified duration.
- Battery Test
- Related: Secondary Power Supply, Primary Power Supply, Supervision
A load test of the standby batteries confirming they can sustain the system's required current for the design duration, with voltage and charging checked before and after.
- Alarm Silence
- Related: Alarm Signal, Notification Appliance, Alarm Reset
The function that silences notification appliances while the alarm condition remains indicated, with resounding required when a new alarm occurs after silencing.
- Alarm Reset
- Related: Alarm Silence, Trouble Signal, Testing
The operation that returns the control unit and initiating devices to normal standby after an alarm, requiring verification that all devices restore and no trouble remains.
- Impairment
- Related: Trouble Signal, Supervisory Signal, Authority Having Jurisdiction
A condition in which the fire alarm system or a portion of it is out of service, requiring notification of the building owner and authority and implementation of a fire watch.
- Fire Watch
- Related: Impairment, Authority Having Jurisdiction, Trouble Signal
A temporary measure in which a person patrols the protected area to detect and respond to fire conditions while the fire alarm or suppression system is impaired.
- Audible Signal
- Related: Notification Appliance, Visible Signal, Notification Appliance Circuit
A sound output from notification appliances intended to alert occupants, tested for sound pressure level, audibility in all occupied areas, and correct operation.
- Visible Signal
- Related: Audible Signal, Notification Appliance, Notification Appliance Circuit
A strobe or other light output from notification appliances intended to alert occupants, especially those with hearing loss, tested for flash rate and coverage.
- NICET
- Related: Authority Having Jurisdiction, Record of Completion, Acceptance Test
The National Institute for Certification in Engineering Technologies, the organization that administers the Inspection and Testing of Fire Alarm Systems certification and its work-element based exams.