Document: NUREG-0800
Document ID: 13fda301-b942-4542-a493-fc1e4c60019b
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0707/ML070710438.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
Guide 1.21 (Position C), Regulatory Guide 4.15 (Position C), and Appendix A to Regulatory Guide 1.33. Instrumentation, sampling, and monitoring provisions should conform to the following: A. Sampling frequencies, required analyses, instrument alarm/trip setpoints, calibration and sensitivities, and provisions for preparing composite samples for low-level radioactivity analyses should conform to Regulatory Guides 1.21, 1.33, and 4.15. The plant’s SREC, ODCM, and/or PCP should indicate sampling frequencies and required analyses. B. Provisions should be made for the necessary instrumentation and facilities to perform gross beta-gamma and gross alpha measurements, isotopic or radionuclide-specific analyses, and other routine analyses in conformance with Regulatory Guides 1.21, 1.33, and 4.15. C. Provisions should be made to perform routine instrument calibration, maintenance, and inspections in conformance with Regulatory Guides 4.15 and 1.33. Instrumentation calibration procedures should consider whether instrumentation response is expected to change given that radionuclide distributions may vary with the operating status of the plant (i.e., normal operation, anticipated operational occurrences, and post-accident conditions). The plant’s SREC, ODCM, and/or PCP should indicate the frequency of such actions. Provisions should also be made to replace or decontaminate instrumentation or sampling equipment without opening the process system or losing the capability of isolating the effluent stream. D. Isolation valves, dampers, or diversion valves with automatic control features should fail in the closed or safe position. The plant’s SREC, ODCM, and/or PCP should establish setpoints for actuation of automatic control features initiating actuation of isolation valves, dampers, or diversion valves. The bases for establishing instrumentation alarm or system activation setpoints should be provided, taking into consideration the following: i. For liquid effluents,