Document: NUREG-0800
Document ID: e1c5261f-4ef6-4478-8cf0-015611057574
Document Type: srp
Title: and 9.3.2, “Process and Post-accident Sampling Systems.”  The review addresses
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1502/ML15029A039.pdf
Revision Date: 2023-06
Chapter: 11
Section ID: 11.5
CFR Part: 
CFR Title: 

Content:
L070710366. Editorial changes included adding new abbreviations in several places throughout this section and correcting grammatical errors. Other changes reflect the removal of redundant information. Technical changes incorporated in this revision include: I. AREAS OF REVIEW The areas of review section was revised by identifying additional technical areas which warrant staff reviews and evaluations in assessing the design and performance characteristics of the GWMS in recognition of existing guidance and regulatory requirements. In part, the additional technical topics identified here also support the expanded topics listed in review interfaces. The additional areas of review address: 1. Quality assurance provisions for GWMS systems not covered by the requirements of 10 CFR Part 50, Appendix B, based on the guidance of RG 1.143. 2. Expanded discussions on design features to prevent, control, and collect radioactive materials, as condensate, from building ventilation systems and ductwork, and gases vented from tanks and components. The discussions now also refer to RG 1.54 and 4.21 and industry guidance under NEI 08-08A in meeting the requirements of 10 CFR 20.1406. 3. For processing systems equipped with automatic control features, justification for the placement of isolation dampers/valves and radiation detectors on process piping, ductwork, and effluent discharge lines to ensure the timely closure of valves and dampers 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. 4. Design features and operational safeguards to prevent the introduction and mixing of chemical additives with adsorption media to avoid the generation of exothermic reactions and explosive gas mixtures in GWMS components. 5. The listing of plant systems identified in review interfaces has been expanded to ensure that the