Document: NUREG-0800
Document ID: b085cd1c-2d74-4547-b757-d8513d0cb353
Document Type: srp
Title: OVERPRESSURE PROTECTION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070419.pdf
Revision Date: 2023-06
Chapter: 5
Section ID: 5.2.2
CFR Part: 
CFR Title: 

Content:
however, the reviewer must verify that any changes are justified. 1. The piping and instrumentation diagrams are examined to determine the number, type, and location of the safety and relief valves in both the primary and secondary systems, and of discharge lines, instrumentation, and other components. 2. All other functions of the components, instruments, or controls used for overpressure protection and the interfaces with all other systems are identified. The effects of these other functions or systems on operation of the overpressure protection system are determined. For PWRs, failure of the makeup and letdown system or the RHR system is examined to assure overpressure protection during low temperature operation of the plant. 3. The capacities, setpoints, and setpoint tolerances for all safety and relief valves are identified. 4. All of the reactor trip signals which occur during overpressure transients, including their setpoints and setpoint tolerances, are identified. 5. All transients analyzed in Chapter 15 of the SAR that result in an increase in the pressure experienced by the RCPB are examined. The predicted peak pressures are identified and the operating conditions and setpoints used in the analysis are reviewed to assure that they are suitably conservative. DRAFT Rev. 3 - April 1996 5.2.2-6 6. The proposed plant technical specifications are reviewed to: a. Confirm the suitability of the limiting conditions of operation, including the proposed time limits and reactor operating restrictions for periods when system equipment is inoperable due to repairs and maintenance. b. Verify that the frequency and scope of periodic surveillance testing is adequate. c. Verify compliance with the technical specification guidance of Generic Letter 90- 06 (Reference 14) for PORVs, PORV block valves, and the LTOP system (PWRs only). 23 d. Verify compliance with TMI action plan item II.K.3.3 of NUREG 0737 regarding reporting of safety relief valve challenges and failures.