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Surface non-destructive inspection of LPG storage tank welding group

3.1 The surface of the weld should be subjected to magnetic particle or liquid penetrant inspection in accordance with the provisions of the design documents. 3.2 Welds prone to hot cracking...

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Internal Quality of LPG Storage Tank Pipeline Welds

Content

3.1 The surface of the weld should be subjected to magnetic particle or liquid penetrant inspection in accordance with the provisions of the design documents.

3.2 Welds prone to hot cracking should be inspected after heat treatment.

3.3 Magnetic particle inspection and liquid penetrant inspection shall be carried out in accordance with the current national standard “Nondestructive Testing of Pressure Vessels”.

3.4 When defects are found on the surface of the weld, they should be eliminated in time. After elimination, the inspection should be carried out again until it is qualified.

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