【 Weak current College 】 refinery production CDU fire-fighting tactics---Power By 【 China power house network 】

Petrochemical enterprises including refining and production of petroleum processing, the CDU is the entire primary oil refining in the production of large production equipment. Because of the CDU in raw materials and products are toxic, flammable. Explosive substances, and production and is in a State of high temperature, high pressure, in addition to its own devices, Richard tall, vertical and horizontal pipelines, once human disaster can have a significant loss. Therefore, for this type of fire should be pre-selected good fire extinguishing programme in order to fire, accurately and efficiently fight.
　　
CDU includes crude oil preprocessing (desalting), atmospheric distillation, vacuum distillation, oil refining, gas recovery occurs, steam, hot water, heating and sewage treatment stations, eight systems, the use of crude oil in the boiling point, repeatedly through condensation and vaporization, various hydrocarbons mixtures separation, device adopts computer and distributed control system DCS system management and carry out the central control room integration unified control. The important parts are: gas-liquid system, electric desalting dewatering tank, vacuum Tower, heat pump room, Tower bottom pump export pipeline, etc.
　　
In response to the major parts of the appliance, we select the gas separation tank and pump house building fire Tower bottom tactical options.
　　
(A) gas separation tank fire-fighting tactics
　　
1. fire parts of gas and liquid solutions in large amounts of gas and naphtha, it said the CDU atmospheric Tower and heat exchanger.
　　
2. the risk of fire in ① if gas separation tank flange or pipe joints leak, gas and a large number of oil and gas combustion, will soon be formed large area of ground and space fire. ② If not timely control human potential or take process can cause burning near the device. Hydrocarbon gas extinguishing time into a part of, if not timely steam or mist water dispersed, will form the second explosion.
　　
3, tactical principles and suppression measures rapidly deployed, ① alarm arrives at the scene after fire detection. If you find the gas leak, to exploit its investigation and inspection equipment for the determination of the concentration, the warning area, the establishment of the warning ID followed by sealing. ② If flange or pipe rupture spillover of fire, use dry powder or spray water for fighting, and the DC gun cooling around other tanks. ③ If has formed large combustion, should quickly mobilize powder concentrate all power car, close to the combustion zone, and then use a dry powder gun to burning heavy parts Jet dry, following the rapid fire with spray water cooling burning tank and water gun to process under cover. ④ If oil and gas has a large number of leaks, the formation of ground flowing fire and tank fire, determine the moment will not prevent leaks, you should first fighting ground oil fire, ripe and then destroy the gas fire, prevent secondary explosion, 5 for gas leak fire, often gathered at AU surface pits and pipeline, and the spread of extremely fast, combustion range is large, in the fighting, surrounded from the surrounding, the gradual reduction in combustion range, and then were eliminated.
　　
4. fire precautions after arriving at the scene, ① that fires change, cannot easily gain access to the combustion zone. ② Note cooling adjacent tank, atmospheric Tower and heat transfer equipment, prevention of fire was expanded. ③ changes in wind direction, water that the shooter should, as far as possible, stand on the upper hand and side wind direction, and select a favorable terrain to prevent explosion.
　　
(Ii) Tower bottom pump house fire-fighting tactics
　　
1, a fire site Tower bottom station is located in the often reduced to the side of the Tower, the cooler the lower portion of the gas separation tank area adjacent to the Tower bottom pumping hot oil pump for the outdoor area.
　　
2. the risk of fire in ① Tower bottom pump high-temperature light oil pressure, once the leak will rapidly form a large area of the pump body and the ground flowing fire. ② pump seal split after oil spill, if you do not pay attention to the timely control or suppression, so that Turkey and flange parts combustion is too long, can cause pipeline burst. ③ Note fighting methods, otherwise they will be in the event of personal injuries.
　　
3, tactical principles and suppression measures ① Tower bottom pump room there is a fire, should take effective measures to control human potential, prevent it spreading to prevent developments. ② taking technology disposal, application of steam, dry powder fire early elimination. ③ If you pump oil pipeline rupture, burst, a large number of oil spills, forming large combustion, difficult to use dry powder for high intensity of the fighting fires, may be set up, diversion, and partitioning. ④ in cutting, pump, use dry powder, foam, water spray and outside the Organization, crossfire, elimination of fire.
4. fire precautions ① select extinguishing agent, attention to fighting methods, prevent electric shock accident. ② control the spread of fire, cool the surrounding equipment. ③ do a scene to prevent confusion at the scene.