Document: NUREG-0800
Document ID: f7c58873-6f34-4f88-8e26-90fc2e310d25
Document Type: srp
Title: PROCESS AND POST-ACCIDENT SAMPLING SYSTEMS
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0706/ML070680137.pdf
Revision Date: 2023-06
Chapter: 9
Section ID: 9.3.2
CFR Part: 
CFR Title: 

Content:
nser evacuation system offgas, and charcoal delay or decay beds 64, 60 Reactor coolant (inlet and outlet of reactor water cleanup system) 13, 14, 64, 60 Standby liquid control system tank 13, 26 Sumps inside containment 64, 60 Spent fuel pool 63, 60 Drywell atmosphere (Mark I & II) 64, 60 Inlet and outlet of gaseous radwaste storage tank 63, 64, 60 Inlet and outlet of condensate polishing system 13, 14 SRP Section 11.5 gives other sample points that may be included in the PSS but do not require remote sampling. 9.3.2-7 Revision 3 - March 2007 2. The plant Technical Specifications include the required analysis and frequencies. 3. The following guidelines should be used to determine the acceptability of the PSS functional design: A. Provisions should be made to ensure representative samples from liquid process streams and tanks. For tanks, provisions should be made to sample the bulk volume of the tank and to avoid sampling from low points or from potential sediment traps. For process stream samples, sample points should be located in turbulent flow zones. The guidelines of Regulatory Position C.6 in RG 1.21 are followed to meet these criteria. B. Provisions should be made to ensure representative samples from gaseous process streams and tanks in accordance with American National Standards Institute/Health Physics Society (ANSI/HPS) Standard N13.1-1999. The guidelines of Regulatory Position C.6 in RG 1.21 are followed to meet this criterion. C. Provisions should be made for purging sampling lines and for reducing plateout in sample lines (e.g., heat tracing). The guidelines of Regulatory Position C.7 in RG 1.21 are followed to meet this criterion. D. Provisions should be made to purge and drain sample streams back to the system of origin or to an appropriate waste treatment system in accordance with the requirements of 10 CFR 20.1101(b) to keep radiation exposures at ALARA levels. The guidelines of Regulatory Positions 2.d.(2), 2.f.(3), and 2.f.(8) in RG 8.8 are