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:
g quality group classification. 9.3.4-5 Rev. 2 - July 1981 3. The failure of portions of the system or of other systems not designed to seismic Category I standards and located close to essential por- tions of the system, or of nonseismic Category I structures that house, support, or are close to essential portions of the CVCS, will not preclude operation of the essential portions of the CVCS (Position C.2 of Regulatory Guide 1.29). Reference to SAR sections describing I site features and the general arrangement and layout drawings will be necessary, as well as the SAR tabulation of seismic design classi- fications for structures and systems. Statements in the SAR that verify that the above conditions are met are acceptable (CP). 4. Using the results of evaluations performed by CPB, the CMEB verifies the adequacy of the system for reactivity control in the following areas: a. Boration of the reactor coolant system is accomplished through either of two flow paths and from either of two boric acid sources, and CVCS meets PWR boration technical specifications. This is verified from the review of P&IDs and system description. b. The amount of boric acid stored in the CVCS exceeds the amount required to borate the reactor coolant system to cold shutdown concentration, assuming that the control assembly with the high- est reactivity worth is held in the fully withdrawn position, and to compensate for subsequent xenon decay during any part of core life. This is verified by coordinating with the CPB. 5. The adequacy of the CVCS for control of water chemistry is verified by examination of the information provided in the SAR, i.e., the allowable ranges for primary coolant activity, total dissolved solids, pH, and maximum allowable oxygen and halide concentrations and veri- 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