Document: NUREG-0800
Document ID: 87477809-7581-4701-b6f2-91410029e1c8
Document Type: srp
Title: MAIN STEAM SUPPLY SYSTEM
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0703/ML070380206.pdf
Revision Date: 2023-06
Chapter: 10
Section ID: 10.3
CFR Part: 
CFR Title: 

Content:
and systems. Statements in the SAR that confirm that the above conditions are met are acceptable. B. Essential portions of the MSSS are protected from the effects of floods, hurricanes, tornadoes, and internally and externally generated missiles. Flood protection and missile protection criteria are evaluated under the SRP Section 3 series. Review of the locations and design of the system and structures determines whether the degree of protection provided is adequate. A statement to the effect that the system is located in a seismic Category I structure that is protected from tornado missiles and floods or that components of the system will be located in individual cubicles or rooms that will withstand the effects of winds, flooding, and tornado missiles is acceptable. C. Essential components and subsystems necessary for safe shutdown can function as required in the event of loss of offsite power. Review of the SAR verifies that, for each MSSS component or subsystem affected by a loss of offsite power, the 10.3-12 Revision 4 - March 2007 system functional capability meets or exceeds minimum design requirements. Statements in the SAR and results of failure modes and effects analyses are considered in assuring that the system meets these requirements. This approach is an acceptable verification of system functional reliability. 7. Review of the descriptive information, P&IDs, MSSS drawings, and failure modes and effects analyses in the SAR to assure that essential portions of the system will function following design-basis accidents, assuming a concurrent single active component failure. The reviewer evaluates the analyses in the SAR to assure the functionality of required components, traces the availability of these components on system drawings, and checks that the SAR verifies that minimum requirements are met for each accident situation for the required time spans. For each case, the design is acceptable if minimum system requirements are met. 8. Review of the SAR