2007-01-23 17:03:16 · 4 answers · asked by NUPUR 1 in Science & Mathematics ➔ Engineering
To alert people that there is a fire on the premises, and they need to take action to:
1. Inform the fire service
2. Evacuate the area immediately
3. Prevent further spread of the fire
2007-01-23 17:10:09 · answer #1 · answered by Anonymous · 0⤊ 0⤋
A fire alarm system is an active fire protection system that controls all the fire alarm components in a building. Fire alarm systems are subject to stringent bounding.
The design of fire alarm systems is required to be performed by competent engineers with experience in fire protection, who are licensed within the geographical area of practice, such as a US State or a Canadian Province. Extensions of existing systems should be done using the original specification for the system and more than likely will be proprietary to match the existing equipment.
A fire alarm system should include, but not be limited to, alarm initiating devices, alarm notification appliances, control units, fire safety control devices, annunciators, power supplies, and wiring.
The A/E should provide a design in compliance with the NFPA fire codes unless a variation is approved. It is recommended that approval come those knowledgeable in fire alarm design.
Fire alarm systems shall comply with requirements of NFPA 72 unless variations to NFPA 72 are specifically identified within these contract documents by the following notation: "variation". The design, system layout, document submittal preparation, and supervision of installation and testing shall be provided by a technician that is certified NICET level III or a registered fire protection engineer. The NICET certified technician shall be on site for the supervision and testing of the system. Factory engineers from the equipment manufacturer, thoroughly familiar and knowledgeable with all equipment utilized, shall provide additional technical support at the site as required by the Contracting Officer or his authorised representative. Installers shall have a minimum of two years experience installing fire alarm systems.
A (DACT) digital alarm communicator transmitter should be connected to a pair of dedicated telephone lines to transmit an alarm signal only to a central station that is responsible for dispatching the fire department. The connection to the fire department is usually via a central station monitoring company that is contracted on a monthly basis by the facility. If a connection to the fire department is not already present, the facility will need to determine if there are two telephone lines available for this connection.
The main fire alarm control unit should automatically transmit alarm signals to a listed central station using a digital alarm communicator transmitter in accordance with NFPA 72.
2007-01-24 01:16:02 · answer #2 · answered by Einstein 2 · 0⤊ 0⤋
Well it fire alarm is used in large buildings to give advance notification to people within the building for evacuation in the event of a fire.
Fire alarm systems are used in commercial complexes, large residential buildings, sky scappers etc etc even aircrafts have them. Applications of this system is quite intensive and i am unable to understand your question and hence such an response
2007-01-24 01:15:11 · answer #3 · answered by Sudden 5 · 0⤊ 0⤋
from my point of view for fire alaram.
One should have proper electric fitting up to standards quality.
One should do his work with total safety precation. with safety standards amd measures.
2007-01-24 03:12:19 · answer #4 · answered by devendra 1 · 0⤊ 0⤋