Document: NUREG-0800
Document ID: f209621d-e334-4866-bbfa-78bca86bd44d
Document Type: srp
Title: PRESSURIZER RELIEF TANK
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0705/ML070550003.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.4.11
CFR Part: 
CFR Title: 

Content:
es described below, as may be appropriate for a particular case. 5.4.11-6 Revision 3 - March 2007 These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. The NRC staff uses the procedures below in the construction permit review to confirm that the design criteria and bases and the preliminary design described in the SAR meet the acceptance criteria in Subsection II of this SRP section. For operating license reviews, the staff uses these procedures to verify that the final design appropriately implements initial design criteria and bases. For DC and COL applications submitted under Part 52, the level of information reviewed should be consistent with that of a FSAR submitted in an OL application. However, verification that the as-built facility conforms to the approved design is performed through the ITAAC process. 1. The staff reviews the SAR to establish that the pressurizer relief tank system description and related diagrams clearly delineate both system operation and the system’s capability to accept the steamflow released from the pressurizer for step load decreases. 2. The staff reviews the SAR to verify that the rupture disks on the relief tank have a relief capacity that at least equals the combined capacity of the pressurizer relief and safety valves. The reviewer determines that the tank design pressure provides a conservative margin above the calculated pressure resulting from the maximum design relief and safety valve discharge (i.e., the maximum surge resulting from complete loss of load). The reviewer verifies that the tank and rupture disks are designed for full vacuum to prevent tank collapse if the contents are cooled after a discharge without the addition of nitrogen. 3. The staff reviews the