Document: NUREG-0800
Document ID: 3c241845-034f-4f89-b12a-f51967895c13
Document Type: srp
Title: PROCESS AND EFFLUENT RADIOLOGICAL MONITORING INSTRUMENTATION
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1307/ML13071A494.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
ines to ensure their timely closure upon the detection of elevated radioactivity levels, and, if part of the design, controls in monitoring deviations of exhaust flow rates and terminating releases or isolating process flows when deviations exceed preset limits. 3. Expanded discussions on radiological monitoring instrumentation classified as safety- related functions and instances when such instrumentation may perform complementary roles, such as used to comply with the requirements of 10 CFR Part 20 and 10 CFR Part 50 during normal operations and TMI-related requirements. The discussion addresses monitoring instrumentation and performance criteria of RG 1.97 and BTP 7-10 in confirming that such instrumentation can provide complementary functions in monitoring radiological conditions during normal operations and AOOs. 4. Expanded discussion on quality assurance provisions given the guidance of RG 1.143 for PERMISS subsystem interfaces with RWMS components not covered by the requirements of 10 CFR Part 50, Appendix B. 5. Expanded discussions on design features used for purging and flushing sampling lines and monitors with nonradioactive fluids (e.g., clean water, air, inert gases) and routing purged or flushed fluids to the LWMS and GWMS. The discussion addresses 11.5-59 Draft Revision 6 – August 2014 confirmation that sources of nonradioactive purging or flushing fluid is protected from backflow and radioactive cross-contamination by using appropriate measures, such as check valves, backflow preventers, interlocks, differential pressures, etc., with the means to return samples from process and effluents streams to their origins. 6. Expanded discussions on 10 CFR Part 50, Appendix A, GDC 2 and 61, as they relate to acceptance criteria related to seismic, safety, and quality group classifications for RWMS SSCs and interface with PERMISS using the guidance of RG 1.143. 7. Expanded listing of plant systems identified in review interfaces has been expanded to ensure