Answer Posted / rizwan
The Deluge system is designed to protect high hazard areas containing a severe fuel hazard with a high heat release rate by bringing a large number of open sprayers into action simultaneously in the event of a fire.
The most common approach of detecting a fire is the use of a sprinkler detection line permanently charged by air. In the event of a fire, the sprinkler detector heads directly affected by the fire will operate. The immediate drop in air pressure within the detector line releases the pressure against the Deluge valve diaphragm unit causing the Deluge Valve to open and discharge water through all the open water spray nozzles to rapidly control and extinguish the fire.
The fire fighting properties of the Deluge valve system can be considerable enhanced with the introduction of foam solution into the systems water supply. Enhanced foam Deluge systems are ideal for the protection of hazards such as the storage and handling of flammable liquids in aircraft hangars, oil refineries and chemical plants etc.
A typical Deluge valve system comprises of a control valve, a sprinkler operated detection system and a dedicated water supply system. For small or confined high hazard risk areas, Multiple Controls can be used instead of sprinklers. The Multiple Control is a distribution valve containing its own detection element. When this element is triggered, it supplies water to a small number of nozzles located within its zone of protection. They are available in 20, 25, 32 40 or 50mm sizes.
The size of the Deluge valve, its flow rate, the system water supply pressure and type of detection system are all determined by the size and type of fire risk involved.
| Is This Answer Correct ? | 4 Yes | 1 No |
Post New Answer View All Answers
How you calibrate absolute pressure with the calibration range of 0 to 1000 0C Absolute. Please explain the procedure for calibration.
model question paper of instrumentation for Jindal GET 2010.plz reply sudhanshukumar08@yahoo.com
can anyone can let me know in Eurotron Micro cal 2+ calibrator in milli amps source mode we are not able to get 20 milli amps output it only produces 1.52 milli amps out, but display shows increase in milli amps , and err6 displays, let me know how to remove the err 6.
any one can send me instrumentation previous interview papers? I prepare for MNC Company Interviews? my mail id- Rakesh.Golla@dodsaldxb.ae , and another mail rakesh.gvk@gmail.com
Why we are using reverse action in displacer types level transmitters on some Vessels?
Calibration procedure for electro magnetic flow meter
Why are the uses 24vdc in industries
How to work temperature gauge?
what is function of SCADA , and how is it work, explain with difination
Explain the working of rota meter.
how u calibrate pneumatic n motorized c/v?
how does we calibrate a square root flow transmitter ,give an example and explain it step by step like range calculation , calibration hook up series connection , zero check , and how to apply pressure , and if not geting proportional output then what should we do ?
How to convert mmWc(mili meter water colam) to tph(ton per hour)?
Explain PID, ON/OFF, Controls
What is the difference between working pressure and calibration pressure of a control valve
