Document: NUREG-0800
Document ID: 81955d2c-b3de-4ce3-a132-7f798c711260
Document Type: srp
Title: INTRODUCTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070675.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.0
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ered or provide analysis to show that no significant fuel damage results from uncovering the core uncovery. Transients which result in a 21 stuck-open relief valve should be included in this category. This may be demonstrated by plant-specific analyses or reference to applicable generic analyses. Generic analyses are considered applicable if geometry and input conditions used for the analyses are representative or bounding. Generic Letter 81-32 documented the NRC staff acceptance of a report addressing Item II.K.3.44 issued by the General Electric BWR Owner Group on December 29, 1980, contingent on verification that the assumptions and initial conditions used in the analyses are representative for the plant under review.22 In a related requirement for pressurized water reactor (PWR) operating license applicants, Action Item II.K.2.17 of NUREG-0737 requires each applicant to analyze the potential for voiding in the reactor coolant system during anticipated transients.23 Action Item II.K.3.7 is applicable to Babcock and Wilcox (B&W) plants and requires documentation that the power-operated relief valve (PORV) will open in less than 5% of all anticipated overpressure transients.24 The Core Performance Branch Reactor Systems Branch is also responsible for the review of all 25 reactor physics data presented in this chapter. This includes power levels, power distributions, doppler coefficients, moderator temperature coefficients, void coefficients, reactor kinetics parameters, and control rod worths. The CPBSRXB review includes the evaluation of possible damage to the fuel as well as the operating and uncertainty bands associated with these variables. and assists RSB as requested.26 The review of anticipated operational occurrences and postulated accidents by RSBSRXB and CPB requires an evaluation of results, presented in the application, of analytical methods which frequently are not documented in the application. In such cases, the applicant may refer to a vendor