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How to inspect the liquefied gas storage tank
If the measured wall thickness is less than the minimum wall thickness of the container, the strength check should be carried out again, and the pressure reduction application or repair measures s...
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- If the measured wall thickness is less than the minimum wall thickness of the container, the strength check should be carried out again, and the pressure reduction application or repair measures should be proposed; for the container that may cause changes in the metallographic structure of the metal material, a metallographic inspection should be carried out if necessary; The main bolts of ultra-high pressure liquefied gas storage tanks should be inspected for cracks by using magnetic powder or coloring. Through the internal and external inspection, the reasons for the defects found in the inspection should be analyzed and suggestions for handling should be put forward. Retest after repair. The internal and external inspection cycle of liquefied gas storage tanks is once every three years, but the inspection cycle of liquefied gas storage tanks with strong corrosive media and highly toxic media should be shortened. The inspection cycle should also be shortened for containers with serious defects found in the work and containers with poor welding quality and unknown material corrosion resistance to the medium.
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