Document: NUREG-0800
Document ID: 35cc4067-cb3a-4cce-af56-bc0c3fd56f33
Document Type: srp
Title: PRESSURE SUPPRESSION POOL AS A FISSION PRODUCT CLEANUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600409.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.5
CFR Part: 
CFR Title: 

Content:
to meet the relevant requirements of the NRC’s regulations identified above are as follows for the review described in this SRP section. The SRP is not a substitute for the NRC’s regulations, and compliance with it is not required. However, an applicant is required to identify differences between the design features, analytical techniques, and procedural measures proposed for its facility and the SRP acceptance criteria and evaluate how the proposed alternatives to the SRP acceptance criteria provide acceptable methods of compliance with the NRC regulations. Where it can be shown to be in compliance with these criteria, the suppression pool may be given appropriate credit for fission product scrubbing and retention (except for noble gases, for which no pool retention credit is allowed) in the staff's evaluation of the radiological consequences of design-basis accidents. Other assumptions concerning the release of radioactivity are to be taken from: Regulatory Guide 1.31 (except for Position C.1.f which this SRP section replaces), Regulatory Guide 1.195, or Regulatory Guide 1.1832 (see Appendix A.3.5). Specific criteria that must be met to receive credit include: 1. The drywell and its penetrations must be designed to ensure that, even with a single active failure, all releases that include fission products from the reactor core must pass into the suppression pool, except for small bypass leakage. 2. The bypass leakage assumed for purposes of evaluating fission product retention must be no less than that accepted in the review under SRP Section 6.2.1.1.C, and must be demonstrated in periodic tests by the license technical specifications also reviewed under that section. 3. For plants that have already received a construction permit, the iodine retention calculated using this section must not be used to justify removal of the standby gas treatment or other filtered exhaust system from status as engineered safety features, and any change in plant design, proposed