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Reactor Pressure Boundary Integrity Issues for Pressurized Water Reactors
Reactor Pressure Boundary Integrity Issues
for Pressurized Water Reactors
Several instances of primary water stress corrosion cracking (PWSCC)
of nickel based alloys have been reported in the reactor pressure boundaries
of pressurized water reactors (PWRs).
The NRC is investigating the effect of PWSCC on the structural integrity
of reactor pressure boundaries at all U.S. PWRs. NRC regulatory
actions for Reactor
Pressure Vessel (RPV) Upper Head, RPV
Bottom Head, the
Pressurizer, Reactor
Coolant Systems Welds, and Overview
are provided in the links below:
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