Document: NUREG-0800
Document ID: ecaaf87c-d5d4-431d-ae8f-8c1afc037312
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML0520/ML052070612.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
offsite doses that would result from the DBA. In other plant designs, radiological effluent monitors are used to actuate systems to modify or terminate releases for other purposes, e.g., to terminate releases due to anticipated operational occurrences to assure ensure that offsite doses are maintained within the limits specified in the plant technical specificationsradiological effluent technical specifications (RETS).96 The design and quality assurance criteria applied to the design, procurement, installation, testing, and operation of radiological effluent monitors installed in light-water-cooled nuclear power reactors should provide assurance that the monitors will perform all of their design functions. If the DBA analysis noted above shows that the actuation of an engineered safety feature (ESF) system is required to mitigate the consequences of a DBA, and that a signal from a radiological effluent monitor is necessary to actuate the ESF system, then the monitor should be designed and qualified to the design and quality assurance criteria applicable to the ESF system. Conversely, if an automatically functioning device or system is used to reduce radioactive releases to assure ensure maintaining offsite doses within the limits of the plant technical specificationsRETS97 (i.e., not for the purpose of mitigating the consequences of a DBA), then a monitor providing the actuation signal should be designed and qualified to criteria consistent with those of the actuated system. This appendix does not establish, nor does it change in any manner, the design and quality assurance criteria established elsewhere for ESF or ESF-related systems or monitors. The design guidance set forth in this appendix provides reasonable assurance that monitors used to provide initiation signals for actuation of systems to control the release of radioactive materials in effluents, but not required to mitigate the consequences of a DBA, are designed, constructed, installed, tested, and