Document: NUREG-0800
Document ID: 66e7af3b-21c0-444f-8737-0830bb176eba
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1502/ML15029A182.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
as is reasonably achievable” (ALARA). In PWRs and BWRs, the PERMISS is used to monitor liquid and gaseous process streams and effluents from the liquid waste management system (LWMS), gaseous waste management system (GWMS), and solid waste management system (SWMS). These systems are collectively referred to as radioactive waste management systems (RWMS). The PERMISS includes systems used to collect process and effluent samples during normal operation and anticipated operational occurrences (AOOs) and under accident and post-accident conditions under Title 10 of the Code of Federal Regulations (10 CFR) Part 50, Appendix A, General Design Criteria (GDC) 60, “Control of Releases of Radioactive Materials to the Environment,” and GDC 64, “Control of Releases of Radioactive Materials to the Environment,” the design basis of the PERMISS is important in demonstrating compliance with 10 CFR Part 20, “Standards for Protection against Radiation,” dose limits for members of the public and should reflect the importance of these safety functions. As such, the review of the PERMISS must be sufficient to assure that the staff has reasonable assurance that public health and safety are adequately protected under NRC regulations. Typically, radiation monitoring systems consist of one or more remote monitors; a centrally located cabinet or console where data from radiation detectors are received, recorded, converted to meaningful radiological units, and displayed in the control room. Other hardware include necessary interconnecting cables, power supplies, actuators and motors, sampling pumps, alarms, recorders, display panels, and other auxiliary components. Some monitoring systems designs rely on the placement of a radiation detector near or within the effluent streams in achieving the same function without diverting any portion of the effluent stream. In specific applications, radiation monitoring systems are used to automatically initiate a protective action when