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:
REVIEW RESPONSIBILITIES Primary - Organization responsible for review of design basis accident radiological consequence analysis. Secondary - Organization responsible for review of chemical engineering issues. Organization responsible for review of containment integrity. Organization responsible for review of ventilation and air filtration. I. AREAS OF REVIEW The pressure suppression pool is reviewed under this plan only when the applicant claims credit for fission product scrubbing and retention by the suppression pool. The pressure suppression pool and the drywell, when considered as a barrier to the release of fission products, are reviewed to assess the degree to which fission products released during postulated reactor accidents will be retained in the suppression pool. Leakage paths that allow fission products to bypass the pool are identified and reviewed, and the maximum fractional bypass leakage is obtained, for use in the evaluation of radiological dose consequences. The specific areas of review are as follows: 1. Fission Product Control Requirements. Sections of the applicant's safety analysis report (SAR) related to accident analyses, accident dose calculations, and fission product 6.5.5-2 Revision 1 - March 2007 control are reviewed to establish whether or not fission product scrubbing of the drywell or reactor compartment atmosphere is claimed or required for mitigation of radiological consequences following a postulated accident. 2. Design Bases. The design bases for the fission product removal function of the suppression pool and the drywell or reactor compartment are reviewed to verify that they are consistent with the assumptions made in the accident evaluations of SAR Chapter 15. The methodology used in this SRP section is not intended for containment venting evaluation. Containment venting will be considered in the evaluation of pressure suppression pools as fission product cleanup systems when the Commission approves the final guidance on