For a high-risk piping system with material mixups, what percentage examination is required?

For a high-risk piping system with material mixups, what percentage examination is required?

• A. 25 percent
• B. 100 percent
• C. 50 percent
• D. 75 percent

Answer: (B)

When a high-risk piping system has material mixups, you must perform a full 100% examination. Mixing materials can create hidden issues at interfaces, welds, and component connections that might not be evident with partial sampling. In a high-risk system, missing even a small area could hide a flaw or incompatibility that leads to a sudden failure, so the inspection scope is set to examine every part of the system to verify material identity, compatibility, and overall integrity. Partial sampling could miss the problem, whereas complete coverage ensures nothing is overlooked.

When a high-risk piping system has material mixups, you must perform a full 100% examination. Mixing materials can create hidden issues at interfaces, welds, and component connections that might not be evident with partial sampling. In a high-risk system, missing even a small area could hide a flaw or incompatibility that leads to a sudden failure, so the inspection scope is set to examine every part of the system to verify material identity, compatibility, and overall integrity. Partial sampling could miss the problem, whereas complete coverage ensures nothing is overlooked.