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:
GDC 4 to the secondary containment provides assurance that the environmental conditions and equipment failures to which it may be exposed will not affect its capability to contain radioactive material under all operating conditions, including accidents. 2. GDC 16 requires the reactor containment and its systems establish an essentially leak-tight barrier against the uncontrolled release of radioactivity to the environment. The secondary containment minimizes radioactive releases by confining primary containment leakage following a LOCA. Application of GDC 16 to the secondary containment minimizes the likelihood and magnitude of exposures of control room personnel and the public to radiation from radioactive releases. 6.2.3-7 Revision 3 - March 2007 3. GDC 43 requires that containment atmosphere cleanup systems be designed for appropriate periodic pressure and functional testing for component integrity, operability of active components, operability of the system as a whole, and performance of the sequence that brings the system into operation. The depressurization and filtration systems of the secondary containment confine radioactive material in the event of primary containment leakage. Periodic application of GDC 43 to these systems periodically verifies capabilities to perform this function, detects and corrects deficiencies, and minimizes the likelihood of demand and inservice failures with the result of a high likelihood that a substantial portion of primary containment leakage will be confined. 4. Appendix J to 10 CFR Part 50 requires that structures of multiple barrier or subatmospheric containments (e.g., secondary containments for boiling water reactors and shield buildings for pressurized water reactors enclosing the entire primary reactor containment or 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