Hot work management system

Hot work refers to welding and cutting operations in a fire-restricted area and use of open flames, blasting, welding, gas cutting in flammable and explosive areas, or the use of tools such as alcohol stoves, kerosene stoves, torches, grinding wheels, and electric drills to generate flames and sparks. Temporary work with red hot surfaces.

From statistical data, it is found that a large number of fires on construction sites are caused by hot work. The reason is that there are many hot work on the construction site. The lack of hot work management and carelessness in hot work are flammable and flammable around the ignition hot spots. Caused by things.

First, the safety of operating procedures

1. The hot work must comply with the relevant national laws and regulations and standards, and comply with the relevant company's safety production management system and operating procedures . The welder must have a welder certificate and a special operator's operation permit, ie , an IC card.

2. Before the hot work, the operator must confirm the on-site safety and specify the areas where high-temperature molten slag, sparks and other types of fire may be or may be splashed. No flammable products ( chemicals, cartons, etc.) are allowed within 10 meters around the area . plastic, wood and other combustible materials, etc.) to ensure the hot work area remains clean, non-flammable combustible materials.

3. When flammable goods that have been removed unconditionally or when the fire may affect or damage unconditionally removed equipment or tools, operators must use hot iron plates, asbestos tiles, fire screens, etc. The fire type is effectively isolated and isolated from the equipment to be protected. The fire extinguishing equipment and water source are prepared on site. If necessary, the on-site watering may be wetted occasionally.

4, before the height of hot work, the operator must identify possible fire or potential fall area, clear the surrounding environment is placing combustible flammable, according to regulations confirm, clean up the site, to prevent the fire splash of fire explosion; Outdoor be high When hot work is performed, winds above Class 5 should be stopped.

5. All chemicals, such as oils, paint thinners, combustible gases, other flammable media, and poisonous media, as well as containers and equipment with pressure and high temperature, shall be strictly prohibited from moving blindly. All moving and non-moving fires should not be moved. Any one that can be removed must be removed and moved to a safe place . When special circumstances are required, the containers, equipment, and pipes must be kept at normal temperature and pressure, and the blind plates that meet the requirements must be cut off and installed. Ensure that the fire fighting equipment or piping is completely isolated from the materials in the production system. Before moving the fire, check the chemical properties in the vessels, equipment, and pipes, and the surrounding environment. Use air, inert gas ( nitrogen, argon, etc. ) , water vapor, After sufficient purging, cleaning and replacement of water, etc. , it is possible to move the fire only after repeated confirmation that there are no hidden dangers ; this hot work is classified as A -grade hot work, and it must be subject to the Hot Work Permit and sent to prison. Fire, fire extinguishing equipment and water, sand. Spot water may be wetted occasionally if necessary.

6. When using gas welding torch cutting operation, the distance between the oxygen cylinder and acetylene and propane cylinders shall not be less than 5 meters . The two shall maintain a safety distance of not less than 10 meters from the hot work point . The cylinders are strictly prohibited from being exposed to sunlight . Oxygen cylinder mouth, relief valve and valve shall not be contaminated with grease or oil. Acetylene bottle is forbidden to lay horizontally . When transporting, storing and using gas cylinders, it is forbidden to collide, knock, and violently roll, and the gas cylinder must be firmly placed to prevent it. Cylinder dumped.

7. Check the electric welding machine , gas cylinder ( reducing valve, hose, cutting torch, etc. ) , grinding wheel, dressing tool, cable, cutting machine and other appliances before the hot work to ensure that the electric wire is not broken or leaked in good condition. , compression, and other arbitrary pull insecurity; welding ground should be directly overlap the weldment, not take arbitrary random access, to prevent poor contact, heat, fire ignition or drain cause casualties.

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8. After the hot work is over, the operator must confirm the safety of the surrounding site, organize and rectify the site, and can leave the site without confirming any hidden danger of fire.

Second, "hot work permit" procedures and requirements

1. The “ hot work permit” is handled by the person in charge of the hot work of the hot work unit. The applicant shall fill out the items in accordance with the “ hot work permit” and shall not be empty;

2. The responsible person of the hot work operation holds a good “ hot work permit” to the site to check the implementation of the hot work safety measures, confirm that the safety measures are reliable, and explain the safety precautions to the hot person and the fire monitor person. The " hot work permit" was handed over to the hot person.

3. A “ hot work permit” can only be applied to a hot spot and facility. Before the fire broke out, the hot workman signed the Hot Work Permit. If there is more than one person working on the same hot spot and facilities, a “ hot work permit” may be used .

4. Hot work after approval must be implemented within 48 hours , and the hot work permit should be re-applied after the deadline .

5. After the approval of the hot-spot extension, it is necessary to apply for extension.

6 , " hot work permit" can not be transferred, altered, can not be used or extend the scope of use.

Third, the fire safety fire safety requirements

1 , hot work must be handled " hot work permit." Into the equipment, high places, etc. for hot work, but also to implement the provisions of the relevant provisions of the equipment and high work.

2. Hot work is carried out at a high place. If combustibles, voids, overcast wells, trenches, water seals, etc., are found on the lower ground, measures should be taken to prevent fire and explosion accidents caused by splashes of fire.

3 , carry out hot work on the ground, there are flammable materials around, fire prevention measures should be taken. Any wells, trenches, water seals, etc. near the hot spot should be inspected, and corresponding safety and fire prevention measures should be taken according to the specific conditions on site to ensure safety.

4th , five winds and above ( including five winds ) weather, prohibiting open fire operations. When hot work is needed for production needs, hot work should be upgraded.

5 , the hot work should have someone to supervise the fire. Before the hot work, the flammable articles on and around the hot fire site should be removed, or other effective safety and fire prevention measures should be taken and sufficient fire-fighting equipment should be provided.

6 , before the hot work, electrical and gas welding tools should be checked to ensure safety and reliability.

7. When using gas welding , welding and cutting, the distance between oxygen cylinders and acetylene cylinders should not be less than 5m . Both of them should not be less than 10m away from hot work sites and are not allowed to be exposed to the sun.

8. Hot work along the railway must be stopped immediately if a train equipped with chemical dangerous goods passes or stays.

9. Whenever hot work is performed inside cooling towers, degassing towers, washing towers, etc. with flammable or inflammable components, fire insulation measures must be taken to cause fires due to splashes of fire.

10. The production is unstable, equipment, pipelines and other serious corrosion are not allowed to carry pressure without replacing the hot work.

11. During the hot work, the security personnel of the safety, fire control department, workshop supervisors, hot work and hot work facilities ( factory of management authority ) shall go to the site to supervise and inspect the implementation of safety fire prevention measures. Large-scale hot work may require full-time fire brigade to monitor the scene.

12. All production and storage devices such as vessels, equipment, and pipelines that contain or have been exposed to chemical dangerous goods must be cleaned and replaced before the hot work is carried out. Hot work can only be carried out after being qualified for analysis.

13. To dismantle the pipeline's hot work, it must first identify its internal medium and its direction, and formulate corresponding safety and fire prevention measures.

14. For hot work on equipment that produces, transports, uses, and stores oxygen, its oxygen content must not exceed 23% .

15. Before the hot work, the production dispatching department and other related departments of the unit where the hot work facility is located ( the branch with administrative authority ) shall be notified, and corresponding emergency measures shall be formulated under the abnormal circumstances.

16. In the process of pressure fire operation, special personnel must be set up to monitor the pressure no less than 3000Pa , negative pressure hot work is strictly prohibited.

17, hot work site through ventilation to be good in order to ensure smooth leaking gas can drain away.

18. After the hot work is completed, clean the site and confirm that there is no residual fire before leaving.

Fourth, personnel responsibilities requirements

1 、Head of hot work

Implementing the leaders of firework workshops or project managers responsible for hot work as the person in charge of hot work. They must take full responsibility for hot work. They must understand the work content, hot spots and surrounding conditions before the hot work, and establish and implement hot work. Safety measures, explaining job tasks and fire safety precautions.

2, people get angry

Before the hot work is carried out, it is necessary to verify whether the contents are implemented and whether the examination and approval procedures are complete. If it is found that they do not have the necessary conditions, they have the right to refuse the fire. Before the fire, they shall take the initiative to submit a “ hot work permit” to the fire monitor person . After both parties have signed and marked the time for hot work, hot work can be carried out.

3 , prisoners

The fire monitor person shall be assigned by a person with strong responsibility and knowledge of safety fire prevention designated by the location of the hot work and the facility management authority. Where no management authority has been assigned to the facility or the facility is in hot work, the fire operator shall appoint a supervisor.

The fire monitor person must take the company's unified logo to take up the post, be responsible for the monitoring and inspection of the hot spot, and at any time extinguish the spark of hot flashes, and immediately notify the hot person to stop the hot work. During the hot work, the fire monitor person must stick to his post. After the hot work is completed, he should clean up the site together with the relevant personnel, remove the residual fire, and confirm that no fire is left before leaving the site.

4 , safety supervisors

The safety personnel who implement the hot work unit and the location where the fire is hot and where the facility is located ( the branch with administrative authority ) shall be responsible for checking the implementation of the standard and the implementation of the safety measures, and correcting the illegal operation at any time.

5 、 Approvers of hot work

5.1 The approver of hot work is the company's safety and fire control department.

5.2 The hot work of industrial and civil gas and oxygen production facilities ( storage tanks, containers, etc. ) and transmission pipelines shall be reviewed and sent to the fire control department for review and approval by the safety authority.

5.3 The hot work in the flammable and explosive areas shall be reviewed and sent to the safety authority for review and approval by the fire department in charge.

5.4 The approver must be familiar with the situation of the hot work site before approving the hot work, determine whether it is necessary to analyze the fire, review the fire rating, and safety and security measures. Only after confirming compliance with the requirements can it be approved.

V. Six bans on hot work

1. Fire permits are prohibited without approval;

2. No reliable isolation from the production system, prohibiting hot work;

3 , do not clean, failed to replace, prohibit hot;

4 , do not eliminate the surrounding flammables, prohibit hot work;

5 , not on time for fire analysis, prohibits hot work;

6 , no fire facilities, prohibiting hot work;

Six, eight must enter the container, equipment

1 , must apply for, apply for a permit, and get approval;

2. Must be safely isolated;

3 , must cut off the power, and use safety lighting;

4 , must be replaced, ventilation;

5 , must carry on the safety analysis according to the time request;

6 , must wear the prescribed protective equipment;

7. Someone must guard outside the device and stick to his position.

8 , there must be rescue backup measures;

The information in this article comes from the Internet and was reorganized and edited by China Rescue Equipment Network.