Level 4 module 5 fire alarm systems

The national institute for certification In engineering technologies (NICET) -

Establishes standardized testing of fire alarm designers and installers.

national fire alarm code (NFPA 72) -

The recommended requirements for installation of fire alarm systems and equipment in residential and commercial facilities are covered in this code.

Life safety code (NFPA 101) -

This document is focused on the preservation and protection of human life, as opposed to property.

NFPA 90A -

Standard for the installation of air conditioning and ventilating systems.

The simplest of all fire alarm systems is a hardwired system using a

Conventional initiation device.

Most analog addressable systems operate on a

Two conductor circuit.

Rate of rise heat detector is in the

HEAT STAGE.

Secondary power for a fire alarm system can be provided by a battery or a

Battery with an approved backup generator.

As defined by NFPA 72, standby time for operation of the system on secondary power must be no less than 24 hours for

Central, local, proprietary, voice communications, and household systems. No less than 60 hours for auxiliary and remote systems.

UL requires that any system controls that affect system operation be

Protected behind a locked door or locked out by a key.

The NFPA does not permit remote resetting of

Fire alarm systems that have signaled an alarm.

Verification is commonly used in hotels, motels, hospitals, and

Other institutions with large numbers of detectors.

When more than two strobes are visible from any location, the strobes must be synchronized to avoid random flashing,

Which can be disorienting and may actually cause seizures in certain individuals.

General signals operate throughout the

Entire building.

All residential alarm sounding devices must have a minimum dB rating of

85dBA at 10 feet

Mechanical rooms sound level is the highest and is

85dBA.

Urban thoroughfares sound level is

55dBA.

Educational occupancies sound level is

45dBA.

Certified central station - monitoring facilities that are constructed and operated according to a standard and are

Inspected by a listing agency to verify compliance.

Cables must be supported by the building structure in such a manner that the

Cables will not be damaged by normal building use.

Fire alarm circuits extending beyond one building are

Governed by the NEC.

The force required to operate manual pull stations must be no more than

5 foot pounds.

Temperatures below 32 Hebrews can cause false alarms and

Temperature above 120 degrees can prevent proper smoke detector operation.

Phase 1 recall is the method of recalling the elevator to the floor that provides the highest probability of

Safe evacuation determined by the AHJ in the event if a dire emergency.

Upon activation of the fire alarm, stair enclosure doors must

Unlock to permit egress.

If no sensors are present, cover or seal the sensor to confirm that the alarm

Originated with the sensor.