Document: NUREG-0800
Document ID: 846ded8e-04ea-4031-8f64-62690ca967b6
Document Type: srp
Title: ANTICIPATED TRANSIENTS WITHOUT SCRAM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070570008.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.8
CFR Part: 
CFR Title: 

Content:
Is. The reviewer will ensure that sufficient information has been provided to justify that the mitigation actions are effective in maintaining core coolability criteria for the limiting ATWS/Stability event. B. For BWRs that implement both extended power uprate (EPU) and expanded power-flow domains (e.g., MELLA+), the licensee will demonstrate that the ATWS/Stability Mitigation Actions are effective in maintaining core coolability criteria for the limiting ATWS/Stability event. C. For evolutionary BWRs, the licensee will provide EOPs or EOIs that implement ATWS/Stability Mitigation Actions equivalent to those approved in Reference 8, including manual boron injection if oscillations are detected. The licensee will demonstrate the EOPs or EOIs are effective in maintaining core coolability criteria for the limiting ATWS/Stability event. 15.8-11 Revision 2 - March 2007 7. Where new methods for the evaluation of ATWS events, risk reduction features, and/or consequences are proposed, based upon the unique features or ATWS sequences of a specific design, the reviewer will initiate a generic evaluation of affected portions of the applicant’s assumptions, plant behavior criteria and models, data, and/or methods for the determination of offsite consequences. The staff may accept such new evaluations, consistent with the principles inherent in acceptable evaluation techniques and the basic approach to determining acceptable ATWS risks and consequences outlined in this SRP section. 8. The reviewer will ensure that the staff has reviewed and approved all analysis methodologies, including the treatment of uncertainties, used in the submittal. 9. The reviewer will ensure that all restrictions and limitations specified in safety evaluations approving a licensing topical report are met, especially when operating under expanded operating domains. 10. The reviewer will ensure that the actual component and actuation setpoint testing supports the technical specification values used in