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:
e extent not addressed in a referenced certified design, including referenced sections of SRP Sections 11.1, 11.2, 11.3, 11.4, and 12.3-12.4, is reviewed for completeness in accordance with Regulatory Guide 1.70 or 1.206. 1. In the review of the PERMISS, the reviewer compares the listing of process and effluent monitors contained in the SAR with the principal release points identified in SRP Sections 11.2 to 11.4 to ensure that all major process streams and release pathways are being monitored during normal operation, anticipated operational occurrences, and postulated accidents. The comparison will include radiation monitoring systems that are used for plant safety and protection, monitoring plant operation (including the operation of the LWMS, GWMS, and SWMS), monitoring and controlling liquid and gaseous effluent releases to unrestricted areas, and instrumentation used for monitoring intersystem leakage among plant subsystems. 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 Regulatory Guide 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 Regulatory Guides 1.21, 1.143, and 4.15,