Document: NUREG-0800
Document ID: 1a3364df-d783-4da3-9f56-b8a667f8cf50
Document Type: srp
Title: CHEMICAL AND VOLUME CONTROL SYSTEM (PWR)
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0523/ML052350555.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.4
CFR Part: 
CFR Title: 

Content:
fication that CVCS can meet PWR reactor coolant system water chemistry technical specifications. 6. The adequacy of resin overtemperature protection is verified by reviewing the system description and drawings to determine that temperature sensors are provided that will actuate the demineralizer bypass or isolation valves. Also, verify that instrumentation is available to monitor filter demineralizer differential pressure. 7. The boron thermal regeneration subsystem is reviewed to determine the maximum change in primary coolant boron concentration due to equipment or control errors as determined from failure modes and effects analyses. 8. The operating procedures and controls for boron addition and primary coolant dilution are reviewed for adequacy. 9. The system P&IDs are examined to determine that all components and piping that can contain boric acid will either be heat traced or will be located within heated rooms to prevent precipitation of boric acid. 10. The application is reviewed with respect to establishing a leak reduc- tion program in accordance with NUREG-0737 (OL applications) or NUREG-07181 (CP applications). 9.3.4-6 Rev. 2 - July 1981 B. The reviewer verifies that the safety function of the system will be main- tained as required in the event of adverse environmental phenomena such as earthquakes, tornadoes, hurricanes, and floods, or in the event of certain. pipe breaks or loss of offsite power. The reviewer uses engineering judg- ment, failure modes and effects analyses, and the results of reviews per- formed under other SRP sections, as applicable, to determine the following: 1. The system description and drawings are reviewed in conjunction with the reactor coolant system to determine that the CVCS has sufficient pumping capacity to maintain the RCS water inventory within the allowable pressurizer level range for all normal modes of operation, including startup from cold shutdown, full power operation, and plant cooldown. Verify that CVCS can