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Strict weld seam inspection for LPG storage tanks

4.6.2 When the two welds are qualified, the batch of welds represented by the inspection shall be considered qualified. 4.6.3 When the two welds are unqualified again, each unqualified weld ...

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4.6.2 When the two welds are qualified, the batch of welds represented by the inspection shall be considered qualified.

4.6.3 When the two welds are unqualified again, each unqualified weld shall be re-inspected for two welds of the same batch by the same welder.

4.6.4 When the re-inspected welds are all qualified, the batch of welds represented by the inspection can be considered qualified.

4.6.5 When the re-inspection fails again, all the same batch of welds welded by the welder shall be inspected.

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