Document: NUREG-0800
Document ID: eb937958-fe7c-410a-91e3-63f04734878a
Document Type: srp
Title: MAIN STEAM ISOLATION VALVE LEAKAGE CONTROL SYSTEM (BMR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350465.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.7
CFR Part: 
CFR Title: 

Content:
ng design basis LOCA conditions. b. Essential components of the leakage control system are correctly identified and are isolable from any nonessential portions of the system. The P&IDs are reviewed to verify that they clearly indicate the physical divisions between such portions and indicate any design classification changes. System drawings are reviewed to see that they show the means for accomplishing isolation and the system descrip- tion is reviewed to identify minimum performance requirements for the leakage control system isolation valves. c. Essential components of the leakage control system, including the isolation valves separating any nonessential portions of the system, and the seal fluid source (if used) are classified seismic Category I and Quality Group A or B, as specified in Regulatory Guide 1.96. Component and system descriptions in the SAR that identify mechanical and performance characteristics are reviewed to verify that the above classifications have been included, and that the P&IDs indicate points of design classification changes. The review for seismic design is performed by SEB and the review for seismic and quality group classifi- cation is performed by MEB, as indicated in subsection I of this SRP section. 6.7-4 Rev. 2 - July 1981 d. Design provisions have been made that permit appropriate inservice inspection and functional testing of system components. It is accept- able if the SAR information delineates a testing and inspection program and if the system drawings show the necessary design provisions to accomplish the testing program. 2. The reviewer determines that the safety function of the.MSIVLCS will be maintained, as required, in the event-of adverse environmental phenomena such as earthquakes. The reviewer uses engineering judgment, the results of failure modes and effects analyses, and the results of reviews performed under other SRP sections indicated in subsection I of this SRP section to determine that the failure of