Document: NUREG-0800
Document ID: 16650158-402d-4897-850a-bc9e2cce7648
Document Type: srp
Title: INADVERTENT OPENING OF A PWR PRESSURIZER PRESSURE RELIEF
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070726.pdf
Revision Date: 2023-06
Chapter: 15
Section ID: 15.6.1
CFR Part: 
CFR Title: 

Content:
he reviewer evaluates the justification presented by the applicant. If a quantitative analysis of the transient is presented in the SAR, the RSBSRXB reviewer, with 55 the aid of the ICSBHICB reviewer, reviews the timing of the initiation of those protection, 56 engineered safety, and other systems needed to limit the consequence of the transient to acceptable levels. The RSBSRXB reviewer compares the predicted variation of system 57 parameters with various trip and system initiation setpoints. DRAFT Rev. 2 - April 1996 15.6.1-8 To the extent deemed necessary, the RSBSRXB reviewer evaluates the effects of single active 58 failures of systems and components which may alter the course of the transient. In this phase of the review the system reviews are performed as described in the SRP sections for Chapters 5, 6, 7, and 8 of the SAR. The reviewer considers possible single failures in systems that replenish or maintain the reactor coolant inventory. The mathematical models used by the applicant to evaluate core performance and to predict system pressure in the reactor coolant system and main steam line are reviewed by RSBSRXB59 to determine if these models have been previously reviewed and found acceptable by the staff. If not, the reviewer initiates a generic review of the model proposed by the applicant. The values of system parameters and initial core and system conditions used as input to the model are reviewed by RSBSRXB. Of particular importance are the reactivity coefficients and 60 control rod worths used by in the applicant's in his analysis and the variation of moderator 61 temperature, void, and Doppler coefficients of reactivity with core life. The justification provided by the applicant to show that he has the selected the core burnup that yields the 62 minimum margins is evaluated. The results of the analysis are reviewed and compared to the acceptance criteria presented in subsection II regarding the maximum pressure in the reactor coolant and main steam