What is required before performing a repair on a code-stamped pressure vessel?

• A. Approval by an Authorized Inspector
• B. Warranty clearance
• C. No approval needed
• D. Manufacturer's approval

Answer: (A)

Repairs on a code-stamped pressure vessel must be approved by an Authorized Inspector before any repair work begins. This oversight ensures the proposed repair plan, methods, materials, and scope comply with the ASME Code and NBIC requirements, preserving the vessel’s safety and the validity of its code stamp. After the repair, the vessel is typically re-inspected and may need re-stamping if the work affects critical aspects. Warranty clearance or manufacturer approval do not substitute this formal code-required authorization.