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:
ection III, "REVIEW PROCEDURES." While granting credit for suppression pool scrubbing in the calculations of accident doses, the acceptance criteria of containment leakage in SRP Section 6.2.1.1.C and the acceptance criteria of the engineered safety feature atmosphere cleanup systems in SRP Section 6.5.1 should still be met. Technical Rationale:10 The technical rationale for application of the above acceptance criteria to the suppression pool as a fission product cleanup system is discussed in the following paragraphs: 1. GDC 41 requires, in part, that systems be provided as necessary to control fission products which may be released into the reactor containment to reduce the concentration and quality of fission products released to the environment following postulated accidents. The radiological consequences of accidents in Chapter 15 of the safety DRAFT Rev. 1 - April 1996 6.5.5-4 analysis report (SAR) are dependent on the quantity and quality of fission products released from containment. If Chapter 15 analysis takes credit for the suppression pool, then this system is relied upon to provide an effective means for removal of fission products released within the drywell during a design basis accident. Fission products are entrained in the suppression pool and are unavailable for leakage from containment. Compliance with GDC 41 ensures that the suppression pool will adequately meet its post accident safety function of fission product cleanup. 2. GDC 42 requires that the system be designed to permit appropriate periodic inspection of important components. If taken credit for in Chapter 15 Accident Analysis, the suppression pool is relied upon to entrain fission products following design basis accidents. Inspection of important components of the suppression pool will 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