Document: NUREG-0800
Document ID: 42f941d3-4815-4bc5-bf81-f2dab04a7aa7
Document Type: srp
Title: SECONDARY CONTAINMENT FUNCTIONAL DESIGN
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070459.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.2.3
CFR Part: 
CFR Title: 

Content:
ary containment external design pressure is not exceeded. SCSB determines that all direct leakage paths have been properly identified, and from a review 47 of the proposed leakage testing program that provisions have been made in the design of the plant to measure the fraction of total primary containment leakage that bypasses the secondary containment. SCSB advises AEBPERB of any inadequacies in the applicant's direct leakage 48 49 6.2.3-9 DRAFT Rev. 3 - April 1996 assumptions used in the radiological analysis. At the operating license stage of review, LGBTSB reviews technical specifications which specify the surveillance requirements for 50 leakage testing of the secondary containment bypass leakage paths. SCSB reviews analyses of the capability of the secondary containment system to resist 51 exfiltration under post-accident conditions. If the secondary containment leakage rate is in excess of 100% of the volume per day, SCSB advises AEBPERB in order that they may 52 53 perform a special exfiltration analysis. SCSB reviews the preoperational and periodic inservice 54 testing programs to assure that testing will be done to verify the extent of exfiltration. SCSB reviews the proposed secondary containment system testing program and the 55 surveillance requirements to assure that tests will be periodically conducted to verify that the prescribed negative pressure can be uniformly maintained throughout the secondary containment. SCSB also reviews the testing program and surveillance requirements to assure 56 that tests will be periodically conducted to verify the secondary containment design inleakage rate and to verify the analysis of the depressurization of the secondary containment. LGBTSB reviews the proposed technical specifications to assure that adequate administrative 57 control will be exercised over the secondary containment openings, such as personnel access doors and equipment hatches. SCSB determines from the descriptive information in the SAR 58 that