Document: NUREG-0800
Document ID: 7e0d3b3e-62c3-4492-ba89-6cebb4e82234
Document Type: srp
Title: SECONDARY CONTAINMENT FUNCTIONAL DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052340701.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.3
CFR Part: 
CFR Title: 

Content:
be made in the design of the secondary containment system to permit inspections and monitoring of the functional capability. The determination of the depressurization time, the secondary contain- ment in leakage rate, the uniformity of negative pressure throughout the secondary containment and other contiguous areas, and the potential for exfiltration should be included in the preoperational and periodic test programs. III. REVIEW PROCEDURES The procedures described below provide guidance on the review of the secondary containment system. The reviewer selects and emphasizes material from the review procedures as may be appropriate for a particular case. Portions of the review may be done on a generic basis for aspects of secondary containment functional design common to a class of plants, or by adopting the results of previous reviews of similar plants. Upon request from the CSB primary reviewer, other branches will provide input for the areas of review stated in subsection I of this SRP section. The CSB reviewer obtains and uses such input as required to assure that this review procedure is complete. CSB reviews the analytical models used and the assumptions made in the analyses of the pressure and temperature response of the secondary containment to loss- of-coolant accidents in the primary containment. In general, CSB determines that the analyses conservatively predict the secondary containment pressure response. In so doing, CSB compares the analyses to the guidelines in subsec- tion II of this SRP section. If considered necessary, CSB performs confirmatory analyses of the pressure and temperature response of the secondary containment for loss-of-coolant accidents within the primary containment and for high energy line (e.g., steam line and feedwater line) ruptures occurring within the annular region formed by the secondary containment. The analyses are done using the CONTEMPT-LT computer code (Ref. 4). It should be noted that, for the analysis of the pressure