Under ASME section IX, what is the maximum allowable size of open ruptures on a performance qualifications?

Under ASME section IX, what is the maximum allowable size of open ruptures on a performance qualifications?

• A. 1/8 inch
• B. 1/4 inch
• C. 3/16 inch
• D. 1/32 inch

Answer: (A)

Open ruptures are surface flaws you’re allowed to have on a weld coupon during a performance qualification, but only up to a small size. Under ASME Section IX, these ruptures may not exceed one-eighth of an inch in length. This limit keeps the test focused on demonstrating the welder’s ability to control the welding process while still allowing for minor surface imperfections that don’t undermine the joint’s integrity. If a rupture is larger than that, the test doesn’t meet the acceptance criteria and the qualification would not pass.

Open ruptures are surface flaws you’re allowed to have on a weld coupon during a performance qualification, but only up to a small size. Under ASME Section IX, these ruptures may not exceed one-eighth of an inch in length. This limit keeps the test focused on demonstrating the welder’s ability to control the welding process while still allowing for minor surface imperfections that don’t undermine the joint’s integrity. If a rupture is larger than that, the test doesn’t meet the acceptance criteria and the qualification would not pass.