Document: NUREG-0800
Document ID: c37e8c68-ed08-434b-b15c-438f1915858a
Document Type: srp
Title: PROCESS AND POST-ACCIDENT SAMPLING SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070526.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.2
CFR Part: 
CFR Title: 

Content:
nt, the containment atmosphere, and the gaseous radwaste storage tank for radioactivity. For BWR The staff has determined that the proposed process sampling system meets (1) the requirements of GDC 13 and 14 in Appendix A to 10 CFR Part 50 to monitor variables 76 that can affect the reactor coolant pressure boundary and to assure a low probability of abnormal leakage, rapidly propagating failure, and gross rupture, respectively, by sampling the reactor coolant, and the condensate for chemical impurities that can affect the reactor coolant pressure boundary; (2) the requirements of GDC 13 and 26 in Appendix A to 10 CFR Part 50 to maintain the reactor core subcritical under cold 77 conditions in the event that control rod system is inoperable, by sampling the standby liquid control system tank for boron concentration; and (3) the requirements of GDC 64 in Appendix A to 10 CFR Part 50 , to monitor for radioactivity that may be released 78 from normal operations, including anticipated operational occurrences, and from postulated accidents, by sampling the reactor coolant, the main condenser evacuation DRAFT Rev. 3 - April 1996 9.3.2-16 system offgas, the sump inside containment, the drywell atmosphere, and the gaseous radwaste storage tank for radioactivity. For both PWR and BWR The staff has further determined that the proposed process sampling system meets (a) the requirements of 10 CFR Part 20, § 20.1(c)20.1101(b) to keep radiation exposures to as 79 low as is reasonably achievable and of GDC 60 in Appendix A to 10 CFR Part 50 to 80 control the release of radioactive materials to the environment, by purging and draining sample streams back to the system or origin or to an appropriate radwaste treatment system, and by providing either redundant isolation valves that fail in the closed position or passive flow restrictions in the sampling lines; and (b) the requirements of GDC 63 in Appendix A to 10 CFR Part 50 , to detect conditions that may result in excessive 81