KB » Welding Degradation

Summary: Factors that contribute to degradation of welding
Categories: Two
Applies to: Test engineer
It must be recognized that improperly made welds and using an improper fabrication process can allow the initiation of certain degradation mechanisms. For example, cold work of stainless steel can be a contributor to stress corrosion cracking of the material in a Boiling Water Reactor (BWR) environment.

It appears there is a consensus that sensitization, residual stresses, cold work, and reduced fracture toughness are key degradation initiators for welds of the type typically used for the reactor coolant system in BWRs and Pressurized Water Reactors (PWR).

References

  1. unknown

Questions and Answers

  • QA0001: What is the recommended action if an indication is found using RT after a weld is made? - see answer
  • New topic Question:

Topic revision: r1 - 2012-09-29 - TWikiAdminUser
 

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