Document: NUREG-0800
Document ID: e3249d77-0411-430a-9793-06aea8669075
Document Type: srp
Title: FISSION PRODUCT CONTROL SYSTEMS AND STRUCTURES
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070474.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.3
CFR Part: 
CFR Title: 

Content:
to be given credit for fission product holdup and removal. The fraction of leakage source considered to be treated by such partial fission products control structures is determined after consultation with the CSBSCSB and ASB reviewer on a case-by-case basis. 57 58 4. Other Fission Product Cleanup Systems Fission product retention credit assumed by the applicant for other systems, e.g., containment spray systems as evaluated in SRP Section 6.5.2, pressure suppression pools as evaluated in SRP Section 6.5.5, and filtration and adsorption units as described in Regulatory Guide 1.52. may be acceptable provided that 59 justification is supplied by the applicant. Such justification Justification for 60 fission product retention systems should include analytical bases addressing the 61 important physical and chemical variables of the fission product removal and retention processes, supported by experimental verification.62 DRAFT Rev. 3 - April 1996 6.5.3-6 Technical Rationale63 The technical rationale for application of these acceptance criteria is discussed in the following paragraphs:64 1. Compliance with GDC 41 requires that fission product control systems be provided in the reactor containment to reduce the concentration of fission products released to the environment after postulated accidents. In the primary containment, fission product control systems include spray, filtration systems, and pressure suppression devices, and in the secondary containment, fission product removal and holdup systems. The function of the fission product control systems is to mitigate the radiological offsite consequences of postulated accidents by decreasing the concentration of fission products available for release to the environment. The review and evaluation of these fission product control systems is the subject of SRP Section 6.5.3. The system and component design criteria for fission product control systems are outlined in Regulatory Guide 1.52, Regulatory Positions C.1, C.2, and