Document: NUREG-0800
Document ID: 3d2920aa-e94d-41fa-ad13-de430eb636a6
Document Type: srp
Title: PRESSURE SUPPRESSION POOL AS A FISSION PRODUCT CLEANUP SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350275.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.5
CFR Part: 
CFR Title: 

Content:
cleanup credit is claimed are reviewed under SRP Section 6.5.2, and credit for both suppression pool and spray cleanup can be given as a result of the separate reviews. 4. Technical Specifications The technical specifications are reviewed to ensure that they require periodic inspection to confirm suppression pool depth and surveillance tests to confirm drywell leak tightness, consistent with the bypass frac- tion used in computing the overall decontamination. IV. EVALUATION FINDINGS The reviewer verifies that sufficient information has been provided by the applicant and that the review and any calculations support conclusions of the following type, to be included in the staff's safety evaluation report: The staff has reviewed the fission product scrubbing function of the pressure suppression pool and finds that the pool will reduce the fission product content of the steam-gas mixture flowing through the pool following accidents that blow down through the suppression pool. The staff estimates that the pool will decontaminate the flow by a factor of _ for molecular iodine vapor and by a factor of for parti- culate fission products. No significant decontamination of noble gases and organic iodides will occur in the pool. The system is largely passive in nature, and the active components are suitably redundant so that its fission product attenuation function can be accomplished assuming a single failure. The applicant's proposed program for preoperational and surveillance tests will ensure a con- tinued state of readiness, and that bypass of the pool is unlikely to exceed the assumptions used in the dose assessments. The staff concludes-that the pressure suppression pool as a fission product cleanup system is acceptable and meets the requirements of General Design Criterion 41 with respect to the iodine removal function following a postulated loss-of-coolant accident, General Design Criterion 42 with respect to the capability for periodic 6.5.5-4 Rev. 0 - December 1988