Qualified for welding repair

Hi Experts,
Assum, base metal is qualified by SMAW process, if detect of defect weld joint, i can use original WPS Smaw to repair or shall be run a new PQR to repair ?

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No you can use the same WPS to repair the defects .
But one thing to remind is that whether the defects found is major or minor if they are major you have to wait for clients opinion.

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There are two options that need to clarify with your Client and submit for approval before applying.

  1. Using an original WPS, as @Aravind_km advice.
  2. Using the repaired WPS for partical weld or full weld which depending on project requirement. Below photo for mock-up repair partial penetration weld.