Document: NUREG-0800
Document ID: 8536691d-4254-4c01-a5ec-aa9dee960958
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100740509.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
tems. In addition, the review addresses the monitoring of nonradioactive systems that could become contaminated with radioactivity through interfaces with radioactive systems. At a minimum, the review includes the following: A. The types and numbers of instruments, number of instrumentation channels, and location of probes, detectors, sampling points, and process and effluent sampling stations. The bases for the selection of these sampling or monitoring points are compared with the general principles and criteria for obtaining valid samples of radioactive materials from liquid and gaseous process and effluent streams. The review also considers the methods and materials used in gaseous and particulate sampling equipment and the guidance for sampling from ducts and stacks contained in RG 4.15, ANSI N42.18-2004, and ANSI/HPS N13.1-1999. B. To ensure representative sampling, the review compares equipment design features, layout, piping, and description of sampling methods to the guidelines in RGs 1.21, 1.143, and 4.15, ANSI N42.18-2004, and ANSI/HPS N13.1-1999. C. The review includes an independent evaluation, on an audit basis, of radioactivity levels and radionuclide concentrations in process and effluent streams using the models of NUREG-0016 or NUREG-0017 and RG 1.112 to verify estimates of expected levels. D. The reviewer compares the sampling frequencies, types of analyses required, and monitoring instrument sensitivities and ranges with those recommended in RGs 1.21 and 1.97. The reviewer also compares the applicant’s monitoring instrumentation specifications and performance criteria with those contained in ANSI N42.18-2004 and in Appendix 11.5-A. SRP BTP 7-10 (see SRP Section 7.5) provides additional guidance on the application of RG 1.97. E. In the review of the P&IDs for the liquid and gaseous waste treatment systems, the reviewer verifies that specifically identified radioactive release points have provisions for automatic termination of releases in the