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Internal and external inspection of liquefied petroleum gas storage tanks

1) All items of external inspection.   2) Whether there is medium corrosion or scour wear on the inner and outer surfaces of the storage tank and the opening joints.   3) Whether there ar...
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1) All items of external inspection.

 

2) Whether there is medium corrosion or scour wear on the inner and outer surfaces of the storage tank and the opening joints.

 

3) Whether there are fractures or cracks in all welds, head transition areas and other stress-concentrated parts of the tank.

 

4) When there is corrosion on the inner and outer surfaces of the tank, multiple wall thickness measurements should be taken on suspected parts. If the measured wall thickness is less than the design minimum wall thickness, the strength verification shall be carried out again, and suggestions on whether it can continue to be used and the allowable working pressure shall be put forward.

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