Document: NUREG-0800
Document ID: c53cf2ef-5eb4-4449-bed4-17a9eff508e3
Document Type: srp
Title: SECONDARY CONTAINMENT FUNCTIONAL DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0636/ML063600406.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.3
CFR Part: 
CFR Title: 

Content:
portions of it) be subject to individual tests according to procedures from technical specifications or their bases. The secondary containment minimizes radioactive releases by confining a substantial fraction of primary containment leakage following a LOCA. The technical specifications establish conservative limits on the total fraction of primary containment leakage which may bypass secondary containment. The technical specifications also specify periodic testing to detect bypass leakage paths, determine leakage rates, and verify operability of secondary containment depressurization and filtration systems. Periodic application of Appendix J to the secondary containment system verifies capabilities to perform the confinement function, detects and corrects deficiencies, and minimizes the likelihood of excessive bypass leakage rates with the result of a high likelihood that a substantial portion of primary containment leakage will be confined. III. REVIEW PROCEDURES The reviewer will select material from the procedures described below, as may be appropriate for a particular case. These review procedures are based on the identified SRP acceptance criteria. For deviations from these acceptance criteria, the staff should review the applicant’s evaluation of how the proposed alternatives provide an acceptable method of complying with the relevant NRC requirements identified in Subsection II. Portions of the review may be done generically for aspects of secondary containment functional design common to a class of plants or may adopt the results of previous reviews of similar plants. 1. Upon request from the primary review organization, the review organizations with review interface responsibilities, as noted in Subsection I, will provide input for the areas of review, as stated in Subsection I of this SRP section. The input obtained will ensure that the review is complete. 2. Analytical models used and assumptions made in the analyses of the pressure and temperature