Increase in Reinspection Intervals for BWR Reactor Internals

By:  Dick Mattson and Minghao Qin

A U.S. BWR utility contracted with Structural Integrity (SI) to review their current reinspection guidance documents relative to those contained in the BWRVIP inspection guidelines, the purpose of which was two-fold:

1. ­Are current reinspection guidelines compliant with industry requirements?
2. ­Are there components where reinspection intervals could possibly be extended?

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