To Enhance Fire Safety of Nuclear Power Plant by Improving Fire Alarm System

Fire safety is an important component of the safe operation of nuclear power plant, and is an important aspect of the nuclear safety. The Distributed Intelligent Fire Detect and Alarm System is of high reliability and sensitivity. In this article, some research will be made on how to limit fire damage by improving the system reliability and sensitivity. Fire safety is an important component of the safe operation of nuclear power plant, and is an important aspect of the security of nuclear safety. There are multitudinous equipments and combustion in Nuclear Power Plants (NPP), such as: lubricating oil, fuel, cable isolation and some woods, papers, plastics etc. They spread all over NPP. Because of the source of ignition and combustible, there are a lot of fire hazards in NPP. The fire is a serious threat to nuclear safety, and caused enormous economic losses of NPP. The frequencies of fire are high in NPP, and the losses of fire also are big. Protection against fire and fire-related explosions assumes importance in the overall design of NPP insofar as it forms a crucial part of the safety considerations, namely how safety systems and other items important to safety are protected from fire hazards. Items important to safety whose malfunction or failure could result in unacceptable release of radioactivity shall be protected, such as Reactor Coolant Pump, Diesel Generator, MCR, Electrical Equipment etc. This would generally be accomplished by improved physical separation and greater use of Fire Detect and Alarm System and Extinguishment Systems. At first, redundant safety system equipment are physical separated in the building. Then fire protection systems are provided where required by the fire protection analysis, in accordance with some standards. The fire protection system detects fires and provides the capability to extinguish them using fixed automatic and suppression systems, manual hose streams, and portable fire-fighting equipment. Fire Detect and Alarm System is the front components of the Fire Protection System, which plays a role in the rapid detection and alarm. Fire Detect and Alarm System automatically detects the character of fire, such as smoke and heat. If the area is on fire, system controller will send out the alarm and control fire extinguishment, emergency light, emergency broadcast and communication, smoke exhaust system. So Fire Detect and Alarm System can affect the performance of the entire Fire Protect System. The Fire Protect System is related to the fire safety of NPP. The reliability and sensitivity of Fire Detect and Alarm System plays an important role in the safety of nuclear plants.