【 Weak current College 】 welding and cutting jobs fire hazard and safety measures (3)---Power By 【 China power house network 】

Second, welding, cutting job security is prepared before the
Can ensure that welding, cutting job safe, smooth, welding, cutting jobs before preparations for the various safety is vital. Welding, cutting works regardless of size, hot welding and cutting front must be conscientious and various security preparations for the:
(1) check the welding and cutting equipment is complete, easy to use, prevention of welding and cutting equipment malfunction. Hot job to work every day before you want to check the welding and cutting equipment, you should check the acetylene generator or welding machine functioning and use tempering prevent normal, (including post-tempered preventer) is maintaining a certain level of water, oxygen cylinders are firmly on the pressure gauge, launched suction welding, cutting torch for suction, acetylene generator is mixed with air in the electric arc welding wires laying for insecurities, etc.
(2) do the welding, cutting job site security checks to clear various combustibles, prevention of welding, cutting Mars spatter and cause a fire accident. Especially improvised welding, cutting, and should be thoroughly checked and to delineate the area of welding, cutting jobs and, if necessary, to the job site, good safety rope. Combustibles and welding, cutting job security space in General should be not less than 10 meters, but specific conditions to specific treatment, such as wind, wind direction, the job of parts, welded or cut, etc. In short, welding, cutting Mars spatter not to dump fuel for boundaries.
(3) identifying welding, cutting pieces of internal structure, clear the welding, cutting inside of inflammable, explosive, flammable material. Prevention of explosion. This is welded, cut jobs ago extremely important preparations for a security. In particular, on the temporary welding, cutting, must not be thought that the workpiece is simple and blind welding and cutting, and must exclude all unsafe circumstances to hot welding and cutting.
(4) identifying welding, cutting parts connection parts, preventing the proliferation of thermal conductivity, heat and cause a fire accident. Such as welding, cutting of various metals inside buildings, what must be identified, whether in pipeline gas, and other substances, whether or not there is pressure inside the pipe and the pressure of the combustible materials that must not be welded, cut. Even if there is no risk of pipeline to identify pipe direction, pipe that leads to the site if there is a risk that is identified and excluded risk factors before hot welding and cutting. In a variety of ships in welding, cutting, more attention should be paid to the heat conduction and diffusion on other parts of the hull, as a result of any work, you must carry out welding, cutting jobs, always in welding, cutting before the affected parts of practical security measures, then to hot welding and cutting.
(5) in the provisional determination of welding, cutting, to choose good place placed acetylene generator, oxygen cylinder or electric arc welding equipment, such equipment and welding, cutting job site should maintain a safe distance, acetylene generator and electric welding machine should be "next to the fire is not near," and "prevent electric shock," and so clearly marked, and protecting the good safety rope, prevent unrelated persons close to them. Arc welding wire should be laid out in the channel is not combustible.
(6) identify fire facilities, equipped with the necessary equipment to prevent a fire accident. Welding workers have to learn the basic method for fire, fire extinguishing of basic knowledge, learn various ways to use fire extinguishers.
(7) in welding, cutting jobs, workers must wear white canvas work clothes. In winter, warm cotton must be sewn, Flock cannot be exposed in case of smoldering fires encountered Mars.
Third, welding, cutting security job
In order to prevent the welding, cutting jobs in case of fire, explosion, welding, cutting and welding, cutting, in General, you can take the following safety measures.
(1) removal in flammable, explosive and no-fire zone, welding, cutting pieces down to migrate to a security zone for welding and cutting.
(2) in isolation on really leave cannot be disassembled welding and cutting parts, welding and cutting of parts or equipment and other flammable or explosive substances are strict isolation.
(3) Exchange on combustible gas containers, pipelines, welding, cutting, inert gas (e.g. nitrogen, carbon dioxide), steam or water injection welded, cut containers, pipelines, the remaining inside of combustible gas exchange.
(4) the cleaning of storage over flammable liquid equipment and piping for welding, cutting before you use hot water, steam or acid, Lye to survive on the inside of the flammable liquid washing away. On not dissolved pollutants, should eliminate the clean before cleaning.
(5) the removal of hazardous materials to job site of the removal of hazardous substances.
(6) open device was welding, cutting equipment, job before unloading, to open all manhole, valves, etc.
(7) enhanced ventilation in inflammable, explosive, toxic indoor job should ventilate the room of flammable, explosive and toxic gas flows into the outdoors, for welding and cutting.
(8) increased humidity, for cooling operation point nearby combustibles cannot remove waterjet can be used to make fuel pouring wet, cool, increase their fire resistance.
(9) prepare fire extinguishing equipment for different job sites and welding, cutting objects with a certain number of fire fighting equipment. On large projects, no fire in equipment repair, and when the job scene environment more complex, you can set fire to the scene, the laying of good water, good fire-fighting equipment at any time.
(10) technique for welding, cutting pieces of internal combustible gas content, a variety of flammable or explosive substances, flash point, lighted, determination of explosion limits of technology, in a secure, reliable circumstances for welding and cutting.
Fourth, welding, cutting after the security check
Welding, cutting operation of fire, explosion, some tend to occur at the end of the stage, of works or in welding, cutting after the end of the job. The reason is easy to guard the end phase, the development of various security measures could not consistently implemented; also for welding, cutting is finished, leaving behind the fire did not go off. Therefore, paying careful attention to the welding, cutting job security checking is welded, cut fire prevention flameproof throughout many can be an important part of the missing. In General, you should do the following:
(1) adhere to the project later stages of the fire-explosion protection measures. Particular attention to the welding, cutting operation has ended, security facilities have been evacuated and found some sites also need to make some very small amount of welding, cutting, must not be lulled to stick welding, cutting the workload model, security measures are not implemented, not hot welding and cutting.
(2) a variety of equipment, containers, welding, welding quality time checking whether it meets the requirements, on leakage welding, welding and other illnesses should leave immediately fix; do not treat into oil and then find the quality problem, it is in trouble. Welding of compression equipment, containers, pipe through the hydraulic or pneumatic test passes, it can be used. Where after welding, cutting or heating container, to be completely cooled before feeding.
(3) welding, cutting operation is finished, you must promptly and thoroughly clean, remove the legacy of the fire. Turn off the power, gas, welding, cutting torch placed in a safe place.
(4) welding, cutting workplaces, often leaving easy discovery of fire, so in addition to job after careful examination, to work on its own initiative, provide security personnel or the next relevant personnel, in order to strengthen the patrol and inspection.
(5) welding the clothes after work or to check whether there is a hidden burning; some fires are often as welders wear clothes hanging in the changing room, after a few hours after the fire of smoldering.
Security personnel to strengthen checks found that burning smell and other anomalies, shall take measures in a timely manner.
5. welding, cutting job security provisions and systems
In welding, cutting jobs, has died in a fire, explosion of thousands. Summarizes these accident, gradually formed a series of effective rules and regulations. Mainly:
(A) the provisions of the fire service professional knowledge training
According to the Shanghai area have proved that after a fire knowledge professional training of welders, fire, explosion accidents decreased significantly; on the contrary; the accident. Specific practices:
(1) by the public security, labor, and technology sectors for various industries and regions training a number of part-time teachers, the examinations as a part-time teacher after (this group of teachers from various sectors and regions in the selection of welders, they have abundant welding expertise and certain cultural level and speaker capability). Relying on this branch of the teaching staff in the city district, and County public security and labour organizations for batches of welder training.
(2) determining a more reasonable educational content, focusing around the welding process of fire and explosion of knowledge, including knowledge of fire, such as professional basic burning basics, fire-fighting methods and use of all fire extinguishers; basic knowledge of chemical dangerous articles, such as chemical dangerous goods classification, combustible liquids, gases, explosion prevention; welding and cutting equipment for fire-and explosion-proof and welded, cut jobs in fire protection technology. Each issue of studying less than a week. By knowing which should be given to the examination, qualified persons special types of operations.
(3) to strengthen the supervision and inspection, adhere to the undocumented not for posts. Each unit should fire regulations on fire safety knowledge of welding must be professional training and undocumented not for posts in job management, such as a serious legal provisions, all units and individuals should be strictly observed. However, there are still many units of welders in an undocumented action, in addition to strengthening the supervision and inspection, you must track down the relevant personnel, in particular, to trace the leadership responsibilities.