Document: NUREG-0800
Document ID: 0b529a75-fd6e-4e39-9791-94f199dfcf56
Document Type: srp
Title: CHEMICAL AND VOLUME CONTROL SYSTEM (PWR) (INCLUDING BORON
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0701/ML070160660.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.4
CFR Part: 
CFR Title: 

Content:
RECOVERY SYSTEM) REVIEW RESPONSIBILITIES Primary - Organization responsible for the review of PWR reactor coolant systems Secondary - Organization responsible for reactor coolant chemistry I. AREAS OF REVIEW Pressurized water reactor (PWR) plants include a chemical and volume control system (CVCS) and boron recovery system (BRS). These systems maintain the required water inventory and quality in the reactor coolant system (RCS), provide seal-water flow to the reactor coolant pumps and pressurizer auxiliary spray, control the boron neutron absorber concentration in the reactor coolant, and control the primary water chemistry and reduce coolant radioactivity level. Further, the system provides recycled coolant for demineralized water makeup for normal operation and the design may also provide high pressure injection flow to the emergency core cooling system (ECCS) in the event of postulated accidents. The review is performed to assure conformance with the requirements of General Design Criteria (GDC) 1, 2, 5, 14, 29, 33, 35, 60, and 61. In addition, the CVCS may provide reactor coolant inventory control and/or reactor coolant pump seal injection necessary for withstanding or coping with a station blackout. The CVCS capability to perform these functions is reviewed as necessary to assure conformance with 10 CFR 50.63(a)(2). The staff reviews the system from the letdown line of the primary system to the charging lines that provide makeup to the primary system and the reactor coolant pump seal-water system. The system is reviewed to the interfaces with the demineralized water makeup system and radioactive waste system. 9.3.4-2 Revision 3 - March 2007 The specific areas of review are as follows: 1. The safety-related functional performance characteristics of CVCS components and the effects of adverse environmental occurrences, abnormal operational requirements, or accident conditions such as those due to a loss-of-coolant accident (LOCA). 2. The determination that a