Document: NUREG-0800
Document ID: 8a69e211-8100-413b-aa05-61dd44b10160
Document Type: srp
Title: REVIEW RESPONSIBILITIES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350115.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.1.4
CFR Part: 
CFR Title: 

Content:
reviewer evaluates the justification presented by the applicant. The applicant is to present a quantitative analysis in the SAR of the increase-in-heat-removal transient that is determined to be most limiting. For this transient, the RSB reviewer, with the aid of the ICSB reviewer, reviews the timing of the initia- tion of those protection, engineered safety, and other systems needed to limit the consequences of the transient to an acceptable level. The RSB reviewer compares the predicted variation of system parameters with various trip and system initiation setpoints. The ICSB review of Chapter 7 of the SAR confirms that the instrumentation and control systems design is consistent with the requirements for safety systems actions for these events. To the extent deemed necessary, the RSB reviewer evaluates the effect of single active failures of systems and components which may affect the course of the transient. This phase of the review uses the system review procedures described in the SRP sections for Chapters 4, 5, 6, 7, 8 and 9 of the SAR. The mathematical models used by the applicant to evaluate core performance and to predict system pressure in the reactor coolant system and main steam lines are reviewed by RSB to determine if these models have been previously reviewed and found acceptable by the staff. If not, a generic review of the models is initiated. The values of system parameters and initial core and system-conditions used as input to the model are reviewed by RSB. Of Particular importance are the values of reactivity coefficients and control rod worths used by the applicant in his analysis, and the variations of moderator temperature, void, and Doppler coefficients of reactivity with core life. The reviewer evaluates the justifi- cation provided by the applicant to show that the core burnup selected yields the minimum margins. CPS is consulted regarding the values of the reactivity parameters used in the applicant's analysis. 15.1.1-5 Rev. 1 - July