NICET ITFAS study materials
NICET ITFAS study resources

NICET ITFAS key terms

NICET ITFAS · Get comfortable with the vocabulary.

Inspection

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.

Related: Testing, Acceptance Test, Impairment
Testing

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.

Related: Inspection, Acceptance Test, Reacceptance Test
Acceptance Test

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.

Related: Reacceptance Test, Authority Having Jurisdiction, Record of Completion
Reacceptance Test

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.

Related: Acceptance Test, Record of Completion, Impairment
Authority Having Jurisdiction

The organization, office, or individual responsible for approving equipment, installations, and procedures, and for enforcing the fire code requirements that govern the installed system.

Related: Acceptance Test, Record of Completion, NICET
Record of Completion

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.

Related: As-Built Drawings, Acceptance Test, Authority Having Jurisdiction
As-Built Drawings

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.

Related: Record of Completion, Zone, Addressable Device
Initiating Device

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.

Related: Notification Appliance, Initiating Device Circuit, Alarm Signal
Notification Appliance

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.

Related: Initiating Device, Notification Appliance Circuit, Audible Signal
Initiating Device Circuit

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.

Related: Initiating Device, Signaling Line Circuit, Conventional System
Notification Appliance Circuit

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.

Related: Notification Appliance, Supervision, Audible Signal
Signaling Line Circuit

A circuit that carries addressable data between the control unit and addressable devices, allowing individual device identification and monitoring of circuit integrity.

Related: Addressable Device, Initiating Device Circuit, Supervision
Addressable Device

A fire alarm component with a unique electronic address that the control unit can identify individually, enabling precise annunciation and targeted testing.

Related: Signaling Line Circuit, Zone, Annunciator
Conventional System

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.

Related: Zone, Addressable Device, Initiating Device Circuit
Zone

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.

Related: Conventional System, Annunciator, Addressable Device
Annunciator

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.

Related: Zone, Trouble Signal, Supervisory Signal
Alarm Signal

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.

Related: Initiating Device, Notification Appliance, Alarm Silence
Supervisory Signal

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.

Related: Trouble Signal, Waterflow Switch, Supervision
Trouble Signal

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.

Related: Supervisory Signal, Supervision, Impairment
Supervision

The monitoring of circuit integrity so that opens, grounds, or faults are detected and annunciated as a trouble condition rather than allowing silent failure.

Related: Trouble Signal, Supervisory Signal, Notification Appliance Circuit
Waterflow Switch

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.

Related: Supervisory Signal, Valve Tamper Switch, Alarm Signal
Valve Tamper Switch

A monitoring device that signals the control unit when a sprinkler control valve is moved from its fully open position, producing a supervisory condition.

Related: Waterflow Switch, Supervisory Signal, Impairment
Smoke Detector

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.

Related: Heat Detector, Duct Detector, Detector Sensitivity
Heat Detector

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.

Related: Smoke Detector, Detector Sensitivity, Initiating Device
Duct Detector

A smoke detector mounted in an air handling duct that samples airflow to detect smoke, requiring testing with the duct system operating as designed.

Related: Smoke Detector, Detector Sensitivity, Initiating Device
Detector Sensitivity

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.

Related: Smoke Detector, Heat Detector, Testing
Manual Pull Station

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.

Related: Initiating Device, Alarm Signal, Notification Appliance
Primary Power Supply

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.

Related: Secondary Power Supply, Supervision, Battery Test
Secondary Power Supply

The standby source, typically rechargeable batteries or a generator, that maintains the fire alarm system during loss of primary power for a specified duration.

Related: Primary Power Supply, Battery Test, Trouble Signal
Battery Test

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.

Related: Secondary Power Supply, Primary Power Supply, Supervision
Alarm Silence

The function that silences notification appliances while the alarm condition remains indicated, with resounding required when a new alarm occurs after silencing.

Related: Alarm Signal, Notification Appliance, Alarm Reset
Alarm Reset

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.

Related: Alarm Silence, Trouble Signal, Testing
Impairment

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.

Related: Trouble Signal, Supervisory Signal, Authority Having Jurisdiction
Fire Watch

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.

Related: Impairment, Authority Having Jurisdiction, Trouble Signal
Audible Signal

A sound output from notification appliances intended to alert occupants, tested for sound pressure level, audibility in all occupied areas, and correct operation.

Related: Notification Appliance, Visible Signal, Notification Appliance Circuit
Visible Signal

A strobe or other light output from notification appliances intended to alert occupants, especially those with hearing loss, tested for flash rate and coverage.

Related: Audible Signal, Notification Appliance, Notification Appliance Circuit
NICET

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.

Related: Authority Having Jurisdiction, Record of Completion, Acceptance Test