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:
margin to ensure that thermal criteria are satisfied. Meeting the requirements of GDC 26 provides assurance that appropriate margins are included to accommodate malfunctions of the reactivity control system, including stuck rods, thereby minimizing the possibility that specified acceptable fuel design limits are not exceeded.45 III. REVIEW PROCEDURES The procedures below are used during both the construction permit (CP) and operating license (OL) reviews. During the CP review, the values of system parameters and setpoints used in the analysis will be preliminary in nature and subject to change. At the OL review, final values should be used in the analysis, and the reviewer should compare these to the limiting safety system settings included in the proposed technical specifications. The applicant's description of the inadvertent pressure relief valve opening transient is reviewed by RSBSRXB regarding the occurrences leading to the initiating event. The sequence of 46 events from initiation until a stabilized condition is reached is reviewed to ascertain: 1. The extent to which normally operating plant instrumentation and controls are assumed to function. 2. The extent to which plant and reactor protection systems are required to function. 15.6.1-7 DRAFT Rev. 2 - April 1996 3. The credit taken for the functioning of normally operating plant systems. 4. The extent to which the operation of engineered safety systems that is required.47 5. The extent to which operator actions are required. 6. The following TMI Action Plan (Refs. 11 and 12) items are reviewed to assumeensure48 compliance with the acceptance criteria: a. II.K.2.8. For Babcock and Wilcox designs, the reviewer evaluates the auxiliary feedwater system upgrade and automatic auxiliary feedwater initiation as they relate to determining the auxiliary feedwater performance requirements for this event, if the applicant's evaluation of this transient indicate that the system will be required to function. b.