Document: NUREG-0800
Document ID: 81a2e18b-7311-4c4e-822e-8dfe1b0ba7aa
Document Type: srp
Title: REACTOR PRESSURE VESSEL INTERNALS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0702/ML070230009.pdf
Revision Date: 2023-06
Chapter: 3
Section ID: 3.9.5
CFR Part: 
CFR Title: 

Content:
components during power ascension and operation at full licensed power conditions to verify whether adverse flow effects occur. The program also is expected to include inspections and walkdowns during refueling outages and extended shutdowns with appropriate ALARA consideration. The extent and duration of this program following startup and power ascension would be determined by the licensee based on the review of operating experience at its plant and other nuclear power plants. The BWR Owners’ Group BWR Vessel Internals Project has developed guidance for inspections of steam dryers at BWR nuclear power plants that may be applied to address NRC comments. The shutdown inspection methods are expected to be qualified for detecting fatigue and intergranular stress-corrosion cracks in reactor internal components Conclusion The staff reviews the consideration of potential adverse flow effects on plant systems (including the steam dryer in BWR nuclear power plants) for power ascension up to operation at full licensed power conditions by an applicant for the construction and operation of a BWR or PWR nuclear power plant and a licensee of an operating BWR or PWR nuclear power plant proposing a power uprate license amendment or a major plant modification. From the review procedure and the acceptance criteria outlined in SRP Section 3.9.2 and RG 1.20, the staff determines whether the applicant/licensee has provided reasonable assurance that the adverse flow effects on plant systems, piping, and components will continue to meet the GDC requirements during power ascension and long-term plant operation. Therefore, the staff concludes, if appropriate, that operation of the nuclear power plant up to full licensed power conditions is acceptable with respect to potential adverse flow effects. 3.9.5-16 Revision 3 - March 2007 PAPERWORK REDUCTION ACT STATEMENT The information collections contained in the Standard Review Plan are covered by the requirements of 10 CFR Part 50 and 10 CFR