【 Weak current College 】 large oil storage tank fire extinguishing technology application---Power By 【 China power house network 】

First, fire detection points
Fighting oil tank fire, the fire brigade arrived at the scene environment allows, fire officers and fire-fighting vehicles should fire tank on the wind or side wind force build-up-call rate from the fire commander to fire Scout Scout group. First, the basic situation of tank farm. The Fire Department should the unit technical staff for a tank farm plan, finding out the burning tank in tank farm location, tank farm zongzhuliang, the total quantity of oil tank, oil tank for storage of oil products classification, etc, see fire truck road, water and oil tank area surrounding circumstances and fixtures and semi-fixed fire fighting equipment, fire extinguishing agent types and storage capacity, fire-dike wall and sewer, then local wind direction, etc. Second, the basic situation of combustion cans. To find out burning tank capacity, the actual reserves, and the adjacent tanks, space structures, oil-tank top height between light oil tank wall eye observation of color can be determined.

Second, the fire command position
Fighting tank fire need fire command, it is necessary to take into account for the fire commander's forward command, and to balance the fire command in command of the safety of personnel. A must in the burning tank 100 m away on the wind or the side of the wind; the second is to occupy the external tank, such as the nearby hills, large appliances, buildings, etc., can be used, as appropriate, in order to observe the fire down; (3) If several combustion oil tank is located in the oil tank or in tank farm on the wind, to prevent other tank from radiation caused by chain explosion and burning, the fire headquarters location must be selected in the tank farm, frontiers commanders reliable before command.

III. basic methods of warfare
When the fire brigade arrived at the scene, in front of the fire engine should try to select the direction of the wind or wind force docked on the side, front direction towards to retreat in advance, and keep the fire truck road open to fire engines at any time to move quickly. One is the cooling override adjacent tank. First, there is no fire forces deployed in adjacent to water cooling tank with a wet blanket coverage such as live adjacent unburned tank tank-top openings so that the oil steam tank no longer continue to volatilize, make sure that adjacent tank does not fire and the fire situation. The second is cooling protection combustion cans. Light oil burners, oil level and temperature is not high, only about 80 degrees Celsius, but light oil with temperature straight down gradually lowering properties, heat wave characteristics not obvious, burning time longer, also will not appear at high temperature. But combustion cans of light oil liquid height if only half or more young, in flames and heat, burning tank wall be inwards and possibly rupture. Therefore, the whole process of the fire to burn in the upper part of the implementation of the water cooling tank wall. The third is ready for full foam extinguishing liquid concentrate. When water and foam liquid reserves to fire, burning tank commander will be based on the size and number of oil analysis in the focus.

IV. fire-fighting techniques
At present, in a large tank construction planning, generally supporting the installation of fire-extinguishing system, equipped with auxiliary facilities, to fight the fire in the early days. First, enable tank fire suppression equipment. When combustion cans on fixed or semi-fixed fire suppression equipment is not damaged, you should first enable fixed combustion cans or semi-fixed fire suppression equipment. The second is to use a mobile fire equipment. When combustion cans on fixed or semi-fixed fire suppression equipment has been fried bad or no settings, you should use the fire brigade of mobile fire equipment-automotive foam Cannon, mobile foam Cannon, foam, foam pipe hook gun and fire fighting vehicles, and so on their own remote control to fixed spray foam tank. Protein foam and synthetic foam mixture of strength should be 8 l/min · square meters, mixing ratio should be 7100. All mobile fire equipment proportioner regulator pointer to alignment with foam injection equipment corresponding index, fire engines pump rated-injection pressure to adjust to the corresponding index.
Third, foam and spray. Fighting oil tank fire must specifically select foam liquid. First, using high pressure foam generator, from the oil tank with liquid injection, while facing protein foam tank top oil surface spray powder; and second, focus on using mobile fire equipment at a point on the tank of spray foam. This can significantly reduce the rate of burning foam and foam falling into the tank by the oil pollution, the most effective extinguishing foam. At the same time to the tank of spray powder better, both at the time of the fire faster than the previous speed up nearly doubled, to have a multiplier effect. Fourth, liquid injection foam techniques. Liquid injection of protein foam fixed, semi-fixed and move in three ways. Using the mobile device will be 30 m away from the burning tank foam tubing and other high pressure foam generators quick connect, you can use to fire. The fifth is solubility in organic solvents and fire. Solubility in organic solvents and fire, you should use anti foam liquid or other synthetic foam bath, bubble bath burning rate is very large and extremely easy to dissolve, fire extinguishing effect is very poor. The top six are covered tank top. To prevent adjacent unburned tank explosion and burning, asbestos mat, wet blanket or wet burlap sacks and covered the top adjacent tank breathing valves, manhole, the quantity of oil port, make the tank oil vapours are not volatile, not to cause the spread of fire and explosion. Seven is unfit to take down the pot. In view of the oil and the different characteristics of liquefied petroleum gas, for tank full, but the tank top is on fire, as well as the adjacent unburned oil tank, not take down the pot. On the contrary, should the tank with water or oil, the oil surface to tank top, preventing the tank level decreased air entering, thus forming an explosive mixture of space; adjacent tank venting after burning tank heat radiation effects still throws an explosion; or down tank flow too quickly, so that the fire formation pressure tank, tempering explosion occurred. Tank oil is full, the risk of explosion. Eight is the unified command of concentrated attacks. Avoid oil tank fire fighting his own battle, set good manpower and availability of fire extinguishing agent, to issue uniform command, aiming at effective.

5. Security considerations
Large oil storage tank fire extinguishing arrangement to be unified, centralized command and avoid his own battle, the safety of the personnel is very important. One is the front positions of fire fighters should wear insulated clothing, wear protective mask, etc., asInsulated clothing is not enough, you can throw a wet blanket. In personnel and equipment sufficient conditions should organize water gun battle shield water gunmen Echelon. Second, fire trucks and fire officers should not be deployed in the tank, in case of losing the battle tank high oil level is flame suddenly turn. Third, it is OK for emergency situations of the MEDEVAC routes and evacuation routes in advance and get through the obstacles such as walls, fences, etc. Received emergency evacuation order in front of the firemen should promptly Freehand to evacuate. Explosion, fire-fighters should use objects in place of flap or hidden, then running out. The fourth is fighting fire with horizontal tank, water gun positions should avoid both ends of the horizontal tank to prevent horizontal tank explosion at both ends of the head flying out of casualties. Fifth, by dry fire suppression field noise, emergency evacuation orders should be made by the fire commander who issued the high power amplified broadcast, so you can ensure that the field is heard in a timely manner. Six is spilled on the ground is solubility solvent oil or foam covers, firefighters can't walk into one, beware of foam is stirred after a combustible gas, so as not to cause comes alive, resulting in unnecessary loss of life.