Fire alarm

NFPA 72 National Fire Alarm Code. National Fire Protection Association, Quincy, MA. 

Eire equipment Fire alarm and fire-fighting equipment must be regularly inspected, maintained and tested Portable extinguishers to have designated locations/be of correct type. Instructions must be provided as to where and how to use them. Practice is necessary... 

Action to be taken upon discovering a fire Action to be taken upon hearing the fire alarm... 

Raising the alarm, including the location of alarm call points, internal fire alarm telephones and alarm indicator panels... 

The importance of fire doors and the need to close all doors at the time of a fire and on hearing the fire alarm Stopping machines and processes and isolating power supplies where appropriate Evacuation of the building ... 

Tanker weighing. Check provision of fire alarms, extinguishers, emergency... 

AMD 1 Portable fire extinguishers. Provisions for the attestation of conformity of portable fire extinguishers m accordance with EN 3 Parts 1 to 5 (AMD 10494) dated September 1999. With BS EN 3-1 to 5 and BS 7863 1996, superseded BS 5423 1987 Eire detection and fire alarm systems. Introduction, supersedes BS 5445 Part 1 1977... 

Fire detection and fire alarm systems. Control and indicating equipment. With BS EN 54-4 1997, superseded BS 5839 Part 4 1998 which remains cuiTcnt... 

Procedures, like equipment, also take time to operate. For example, how long does it take to empty your building when the fire alarm sounds Is this quick enough ... 

In the event of fire within a building, the controller for each elevator should isolate all manually operated inputs and return automatically to the evacuation level, usually the ground floor. An output from the building fire alarm panel is hard wired to the elevator controller, giving the signal for a fire condition. The elevator remains disabled at the evacuation level and the car doors open. If a fire officer requires control of a elevator a key switch or break-glass unit should be used to re-activate the elevator. 

Make themselves familiar with fire alarm procedures. 

False. Smoke from a fire can build up very rapidly. Such smoke can be very thick and, in some cases, highly poisonous. You should always evacuate a building in the correct manner on hearing a fire alarm unless told otherwise by a responsible person. 

You should always use the lift/elevator to leave a buildin0 quicKl where the fire alarm has sounded. Is this true 6rive reasons for (Our answer. 

If >(ou hear a fire alarm >(ou should not leave a buildin9 before bein9 told to do so. 

In Chapter 5.4, optical ultraviolet radiation sensors are described, including UV-enhanced silicon-based pn diodes, detectors made from other wide band gap materials in crystalline or polycrystalline form, the latter being a new, less costly alternative. Other domestic applications are personal UV exposure dosimetry, surveillance of sun beds, flame scanning in gas and oil burners, fire alarm monitors and water sterilization equipment surveillance. 

A visible-blind UV sensor detects radiation only below A = 400 nm and thus is sensitive to the UV radiation of sunlight A solar-blind sensor does not react to sunlight and usually detects radiation below A = 300 nm. An outside fire alarm sensor imposes one of the most stringent requirements for solar-blindness. It must be sensitive to 100 pW/cm2 or less between 220 nm and 300 nm but should not react to direct sunlight that gives 100 mW/cm2 between 320 nm and 720 nm. 

The excellent detection ability for flames makes UV sensing a good method for remote fire alarm-monitoring. UV radiation after the outbreak of a fire reaches a sensor much faster than heat or smoke. Also, the distance between sensor and fire is less critical. Requirements for the sensor are high sensitivity and excellent selectivity. Radiation intensities at the sensor position may be even lower and the ambient light conditions less restricted than for combustion controlling. When used outside, solar-blindness is a must. These stringent requirements make UV fire alarm monitors expensive, and they are used in industrial environments such as production floors or warehouses rather than in private homes. 

Regime precautions compose an aggregate of the rules for securing the safety of objects or installations. Electrical security system, access and departure into facility of employees and vehicles, fire alarm signalization etc. 

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