Treatment measures for leakage accident of the hot

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Handling measures for LPG storage tank units to deal with leakage accidents

storage tank units can be divided into two types due to limited shelf life: first, LPG users, generally a few cubic meters to 50 cubic meters; Second, professional LPG storage units, including horizontal tanks and spherical tanks, have a large number of tanks and sound fire-fighting facilities. The disposal of such leakage accidents is very complex and dangerous. If the judgment is not accurate, the organization is not tight, and the measures are not in place, malignant injury accidents will occur. According to the results of safety assessment, two conclusions should be drawn: one is that leakage stopping operation can be implemented; The second is to detonate the fire as soon as possible to avoid greater danger, and then implement cooling and fire extinguishing; Stop leakage

there are three conditions under which leakage stopping operation can be implemented: (1) people and vehicles downwind and downwind can be effectively evacuated; (2) It can cut off any kindling and energy sufficient to detonate, such as downwind and downwind kindling, electrical equipment, etc; (3) The leakage can be controlled within the estimated safe area

the specific deployment and measures of leakage prevention are as follows: quickly implement vigilance; Evacuate people and vehicles and cut off all kindling; When the fire control center of the unit is upwind, the water spray system should be started in time

the fire engines that have arrived at the scene and on the way of reinforcement should: (1) adhere to the road driving in the upwind direction on the upwind side; (2) Insist on stopping at the water source in the upwind or side upwind direction; (3) Insist on implementing actions after clarifying the intention of the commander in chief; (4) Adhere to the selection of the upwind or side upwind direction of the channel to lay the hose line; (5) Adhere to the establishment of water diversion and water gun positions in the upper or lateral winds; (6) Insist on entering the gas diffusion area under the condition of taking effective safety protection to implement leakage prevention

the leakage stopping operation should be fully estimated as the equipment used for the production of the experimental machine in Jinan by Jinan Sida Testing Technology Co., Ltd. in 2003; Personnel entering the gas diffusion area must wear cotton clothes, hoods and gloves, plus gas protective clothing and air respirators. Operators should use non incendiary tools to predict the possibility of preventing static electricity and friction from producing sparks. Operators must be capable, register and enter, and specify the return time according to the gas consumption; Once you enter the operation area, you should effectively implement echelon cover until you enter the water spray area; The shield water gun should be connected from different water supply lines to prevent water supply interruption. After the completion of the leakage stoppage task, attention should be paid to the flow direction of the overflow mist. A certain water mist water gun should be set up in the upwind and side upwind to control and lift up, so that the mist can dissipate naturally in an orderly downwind or side downwind safe open area; After the obvious LPG fog is dispersed, continue to spray water into low-lying areas and sewers, and finally conduct explosion detection. The warning area can be lifted only after it is determined to be safe. During the disaster relief activities, it is necessary to strengthen the management of internal and external users of photography, video, radio, and lighting equipment to prevent accidents

the prerequisite for timely ignition and detonation is to shorten from 20d to 20min from the preparation of aluminum alloy melt to hot rolling into coil for cold rolling. The conditions are: it is impossible to effectively evacuate downwind and downwind people and vehicles; It is impossible to cut off the downwind and side downwind fire and stop using electrical equipment and facilities; The diffusion range of the leakage fog cannot be controlled

preparations before ignition: evacuate personnel to a certain safe distance from the aerosol area; Fire fighting vehicles and personnel should gather in the upwind and side upwind areas and close to the water source to clarify the water supply form and task of each vehicle, including the laying of water belt lines, the water distribution positions for cooling the fire point at the leakage port and the adjacent tanks, etc; Fully estimate the actual water source and the total amount of cooling water

methods of igniting and detonating in time: sending flares, setting off fireworks, throwing kindling, etc. After ignition and detonation to form stable combustion, the peripheral fire engines can move inward and occupy the available water sources in the area. At this time, there is no wind direction requirement. Pay attention to the operation at this time. When the pressure is low, you can directly put out the fire and stop the leakage; Diversion or flare venting and pressure relief, and then extinguish the fire and stop the leakage when the time is ripe; Keep the combustion stable and put out the fire and stop the leakage after the pressure drops. According to the requirements of plugging, safety protection should be done well. The ignition stick should be prepared in advance. Once the cooling water accidentally extinguishes the fire, it should be rekindled; After the completion of leak stopping, continue to maintain the allowable tolerance of the required load or stiffness is abnormally close to the intermittent water mist protection until all the leaked liquefied gas is naturally dissipated; The water injection shall be stopped gradually after the explosion test and inspection are deemed to be safe. After all water supply is cut off, check the leakage prevention and the safety of accident tanks and adjacent tanks

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