Document: NUREG-0800
Document ID: e1f233ab-8592-464a-9fdc-1a20ebe416a1
Document Type: srp
Title: PRESSURE SUPPRESSION POOL AS A FISSION PRODUCT CLEANUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070477.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.5
CFR Part: 
CFR Title: 

Content:
ll validate the safety analysis assumptions regarding the system's effectiveness in fission product cleanup and assure the integrity and capability of the system to remove fission products following a design basis accident. 3. GDC 43 requires that the system be designed to permit appropriate periodic testing of important components. The capability of the suppression pool to clean up fission products is dependent upon the functionality of system components. Examples of functional testing performed on the suppression pool system components include: drywell leak testing, vacuum breaker operability tests, vacuum breaker position indicator and alarm testing, and water level instrument testing. The periodic functional testing of the suppression pool system components validates the safety analysis assumptions regarding the system's effectiveness in fission product cleanup and provides assurance of operability and the capability to remove fission products following a design basis accident. III. REVIEW PROCEDURES The reviewer selects and emphasizes specific aspects of this SRP section as are appropriate for a particular plant. The judgment on which areas need to be given attention and emphasis in the review is based on a determination of whether the material presented is similar to that recently reviewed on other plants and whether items of special safety significance are involved. The first step in the review is to determine whether or not the suppression pool is to be used for mitigating radiological consequences. If no credit is claimed for fission product removal in the accident analyses, no further review is required under this SRP section. If the suppression pool is intended as an engineered safety feature for mitigation of radiological doses, then the reviewer estimates its effectiveness in removing fission products from fluids expelled from the drywell or directly from the pressure vessel through the depressurization system. If the values in Regulatory Guide 1.3,