Heguo brand 50 cubic LPG storage tank price contracting overall installation project

Description :

pressure vesselIt refers to a sealed equipment that holds gases or liquids and carries a certain pressure. Pressure vessels have a wide range of applications and play an important role in many sectors such as industry, civil use, and scientific research; Inspection is an important link in the production, manufacturing, and use of pressure vessels.

　　The main contents of external inspection (also known as in operation inspection) include: whether there are cracks, deformations, leaks, local overheating and other abnormal phenomena on the outer surface of the pressure vessel; Whether the safety accessories are complete, sensitive, and reliable; Whether the fastening bolts are intact and fully tightened; Whether there are any abnormal phenomena such as sinking or tilting of the foundation, and whether the anti-corrosion layer is damaged.

　　External inspection is not only the job of inspectors, but also a daily patrol inspection item for operators. If any safety hazards are found (such as cracks, deformation, severe leakage of pressure components, etc.), the operation should be stopped and relevant personnel should be reported in a timely manner.

　　The internal and external inspection of pressure vessels must be carried out after parking and cleaning the interior of the container. The main content of the inspection includes not only all external inspections, but also the corrosion and wear phenomena on the inner and outer surfaces; Inspect all welds, transition zones of heads, and other stress concentration areas for cracks with the naked eye and magnifying glass, and if necessary, use ultrasonic or radiographic testing to check the internal quality of welds; Measure wall thickness.

　　If the measured wall thickness is less than the small wall thickness of the container, strength verification should be carried out again, and pressure reduction or repair measures should be proposed; If necessary, metallographic examination should be conducted on containers that may cause changes in the metallographic structure of metal materials; The main bolts of high-pressure and ultra-high pressure pressure vessels should be inspected for cracks using magnetic powder or coloring. Through internal and external inspections, analyze the causes of the defects identified and propose solutions. After repair, a re inspection is required.

　　The internal and external inspection cycle of pressure vessels is once every three years, but the inspection cycle for pressure vessels with strongly corrosive and highly toxic media should be shortened. Containers with serious defects found during operation, as well as containers with poor welding quality and unknown material corrosion resistance to the medium, should also have their inspection cycle shortened.

　　In addition to the above inspection items, a comprehensive inspection of pressure vessels also requires a pressure test (usually a hydrostatic test). Perform non-destructive testing spot checks on the main welds or inspect all welds. However, for pressure vessels with low pressure, non flammable or non-toxic, and non corrosive media, if no defects are found and certain usage experience is obtained, non-destructive testing may not be required. The comprehensive inspection cycle for containers is generally conducted at least once every six years.

　　For pressure vessels that are manufactured to be qualified for containing air and inert gases, the comprehensive inspection cycle can be appropriately extended after obtaining usage experience and confirming that there is no corrosion through one or two internal and external inspections.

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