Pressure vessel maintenance content, talking about pressure vessel and pipeline maintenance manageme

1. Keep the anti-corrosion layer of the pressure vessel intact.

For pressure vessels where the working medium is corrosive to the material of the container body, an anti-corrosion layer is often used to prevent the corrosion of the medium on the container, such as painting, spraying or electroplating and lining. If the corrosion protection layer is damaged, the working medium will come into direct contact with the container wall and cause corrosion. To keep the anti-corrosion layer intact, it is necessary to check frequently whether the anti-corrosion layer has fallen off on its own, or has been scraped off or damaged during the loading and installation of the internal accessories of the container.

Take care to check whether the lining is cracked or if there is any leakage at the weld. When the anti-corrosion layer of the pressure vessel is found to be damaged, it should be repaired in time before it can be used continuously.

2. Eliminate the factors that produce chemical corrosion.

The medium of some pressure vessels will only produce chemical corrosion to the material of the vessel body under certain conditions, and we should try our best to eliminate this factor that can cause chemical corrosion of pressure vessels. For example, the pressure vessel containing oxygen often accumulates water at the bottom of the container due to the large amount of water in the oxygen, resulting in serious corrosion at the interface between water and oxygen. To prevent this localized corrosion, it is best to allow the oxygen to dry out, or to drain the water in the container frequently during operation.

The alkali embrittlement of carbon steel containers is caused by the concentration and enrichment of lye under abnormal conditions (including equipment and process conditions), so the pressure vessel containing dilute lye in the medium must take measures to eliminate the conditions that may produce dilute lye concentration, such as pipe leakage, rough container wall or the presence of porous substances such as rust.

In the process of pressure vessel operation, it is necessary to eliminate the running, rising, dripping and leaking of the pressure vessel, because running, rising, dripping and leaking not only waste raw materials and energy, pollute the working environment, but also often cause corrosion of pressure vessel equipment, and in serious cases, it will also cause damage.

1) Strengthen the regular inspection and regular maintenance of pressure vessels and pressure pipelines, regularly prevent corrosion, ensure safe and correct use and management according to law, avoid unnecessary collisions on the surface of pipelines, keep the surface of containers and pipelines smooth and clean, and prevent all kinds of ionization and chemical corrosion.

2) The operating part of the valve should be maintained frequently, and activities should be carried out regularly to ensure that its switch is flexible.

3) The safety valve and pressure gauge should be wiped frequently to ensure that they are flexible, accurate, and checked and calibrated on time.

4) It is necessary to regularly check the intact condition of the fastening bolts, so that they are complete, non-corroding, complete and reliable.

5) When the pressure pipeline produces large vibration due to external factors, vibration reduction measures such as isolating the vibration source and strengthening the support should be taken. Measures should be taken in a timely manner when friction is discovered.

6) The electrostatic jumper cover and grounding device should be kept intact, and the defects should be eliminated in time to prevent the occurrence of failures.

7) The internal medium should be excluded from the pressure pipeline, and replaced, cleaned and dried, and inert gas protection should be used if necessary, and the outside should be painted with anti-corrosion paint to prevent corrosion by environmental factors. For pipelines with insulation layer, attention should be paid to the anti-corrosion under the insulation layer and the anti-corrosion at the bearing.

8) It is forbidden to use pipes and brackets as the zero line for electric welding, the anchor point of lifting tools, and the support point for pry lifting heavy objects.

9) Eliminate the phenomenon of running, running, dripping and leaking in time.

10) The bottom and bend of the pipeline are the weak links of the system, which are prone to corrosion and wear, so these parts must be checked frequently, maintenance must be strengthened, and hidden dangers must be eliminated in time.

11) Conduct annual inspections of pressure vessels and pipelines every year. And do a good job in the anti-corrosion work of pressure vessels and pipelines.

Whether the nameplate, paint color, logo and sprayed license number of the pressure vessel comply with the relevant regulations.

Whether there are cracks, deformations, damages, etc. in the body, interfaces, and welded joints of the pressure vessel.

Whether there is corrosion on the outer surface, whether there is abnormal frost, condensation, etc.

Whether there is overpressure, overtemperature and overquantity during operation.

Whether the discharge device is in good condition.

Whether the support or bearing is damaged, whether the foundation is destroyed before sinking, tilting, cracking, and whether the fastening bolts are complete and intact.

If the tank has a grounding device, check whether the grounding device meets the requirements.

Answer]: B pressure vessel maintenance practices: (l) Keep an intact anti-corrosion layer.

If the anti-corrosion layer is found to be damaged, even if it is partial, it should be properly treated after repairing and so on. (2) Eliminate the factors that cause corrosion. (3) Eliminate the "running, rising, dripping, and leaking" of the container in the vertical section.

4) Strengthen the maintenance of the container during the shutdown period. For containers that are out of service for a long time or temporarily, maintenance should be strengthened. The deactivated container must be cleaned of the internal medium, and the corrosive medium must be discharged, replaced, cleaned and other technical treatments.

5) Always keep the container in good condition. All safety devices and measuring instruments on the container should be adjusted and calibrated regularly.

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Pressure vessel maintenance needs: (1) Verify the status of production sites, processing and manufacturing equipment, inspection and testing equipment and personnel; (2) Review the quality manual and related documents; (3) Review the implementation of the quality management system; (4) Review the relevant technical slowing and ascension materials; (5) Inspect and test the trial production of old products. The pressure accommodator generally refers to a closed container used for the storage, transportation or heat transfer, mass transfer and reaction of fluids with a certain pressure.

Summary. Dear, I will find out what qualifications are needed for pressure vessel maintenance: 1. Have the corresponding vocational skill certificate, have a good safe and civilized construction style and professionalism; 2. Have a strong sense of service, a strong sense of responsibility and ability to work under pressure; 3. Have certain knowledge of pressure vessel structure, manufacturing process and maintenance; 4. Familiar with the inspection, testing, maintenance and other related specifications of pressure vessels; 5. Familiar with the safety operation procedures and safety technical operation procedures of pressure vessels; 6. Familiar with the safety inspection, testing, maintenance and other related procedures of pressure vessels; 7. Familiar with the safety operation requirements of pressure vessels, and be able to operate pressure vessels correctly; 8. Have good safety technical literacy, and be able to detect pressure vessel diseases in time; 9. Rich experience in steel structure welding, machining and maintenance; 10. Proficient in pressure vessel welding, maintenance and safety inspection technology.

Dear, I will find out what qualifications are needed for pressure vessel maintenance: 1. Have the corresponding vocational skill certificate, have a good safe and civilized construction style and professionalism; 2. Have a strong sense of service, a strong sense of responsibility and the ability to work under pressure; 3. Have knowledge of the structure, manufacturing process and maintenance of pressure vessels disturbed by a state; 4. Familiar with the inspection, testing, maintenance and other related specifications of pressure vessels; 5. Familiar with the safety operation procedures and safety technical operation procedures of pressure vessels; 6. Familiar with the relevant regulations such as safety inspection, testing, maintenance and maintenance of pressure vessels; 7. Familiar with the safety operation requirements of pressure vessels, and be able to operate pressure vessels correctly; 8. Have good safety technical literacy, and be able to detect pressure vessel diseases in time; 9. Rich experience in steel structure welding, machining and maintenance; 10. Proficient in pressure vessel welding, maintenance and safety inspection technology.

There are no requirements for a qualification certificate.

Can I do maintenance without a pressure qualification certificate?

No, companies that do not have a pressure qualification certificate are not qualified to carry out maintenance, so they cannot carry out maintenance.