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Exam API-571 topic 1 question 53 discussion

Actual exam question from API's API-571
Question #: 53
Topic #: 1
[All API-571 Questions]

In design and fabrication, it is advisable to avoid sharp changes in cross section, such as short radius fillets or undercut that can give rise to _________.
Long-seam welds are particularly susceptible to reheat cracking due to mismatch caused by fit up problems.

  • A. Stress concentrations
  • B. Cracking
  • C. Circumferential stress
  • D. All of the above
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Suggested Answer: A 🗳️
by ahmadmm at Sept. 5, 2023, 9:17 a.m.

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ahmadmm
1 year, 4 months ago
In design and fabrication, it is advisable to avoid sharp changes in cross section, such as short radius fillets or undercuts that can give rise to stress concentrations. Long-seam welds are particularly susceptible to mismatch caused by fit-up problems or by “peaking” due to the plate edges not being properly rolled.
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