Document: NRC Regulatory Guide
Document ID: 5ec01b96-5209-446f-95b3-7342d73ba086
Document Type: regulatory_guide
Title: Design, Inspection, and Testing Criteria for Air Filtration and Adsorption Units of Post-Accident Engineered-Safety-Feature Atmosphere Cleanup Systems in Light-Water-Cooled Nuclear Power Plants + HISTORY - HISTORY 12/2011 – DG-1274 , Proposed Revision 4 10/2000 – DG-1102 , Proposed Revision 3 (Rev. 4)
Source: NRC Regulatory Guide Division 1
Source URL: https://www.nrc.gov/docs/ML1124/ML11244A045.pdf
Revision Date: 2023-06
Chapter: 
Section ID: RG-1.52
CFR Part: 
CFR Title: 

Content:
quipment, and that has been homogenized to exhibit the same physical properties and performance characteristics throughout the mass. (See Article FF-1130 of ASME AG-1-2009 with addenda.) 6 A “lot of activated carbon” or a “lot of impregnated activated carbon” is that quantity of adsorbent consisting of one or more batches of adsorbent that constitute and satisfy a purchase order. (See Article FF-1130 of ASME AG-1-2009 with addenda.) DG-1274, Page 13 or better than activated carbon that satisfies the specifications in Article FF of ASME AG-1-2009 with addenda. If sample canisters are used, they should be designed in accordance with Appendix I to ASME N509-2002 (Ref. 11). l. Ducts and filter housings should be laid out with a minimum of ledges, protrusions, and crevices that could collect dust and moisture and that could impede personnel or create a hazard to them in the performance of their work. Turning vanes or other airflow distribution devices should be installed where needed to ensure representative airflow measurement and uniform flow distribution through cleanup components. m. Dampers should be designed, constructed, and tested in accordance with Section DA of ASME AG-1-2009 with addenda. n. The system fan, its mounting, and the ductwork connections should be designed, constructed, and tested in accordance with Section BA (for blowers) and Section SA (for ducts) of ASME AG-1-2009 with addenda. The fan or blower used on the ESF atmosphere cleanup system should be capable of operating under the environmental conditions postulated, including radiation. Each driver should be qualified in accordance with Class 1E qualification standards in ANSI/IEEE Standard 323, “IEEE Standard for Qualifying Class 1E Equipment for Nuclear Power Generating Stations.” (Ref. 28) Ductwork should be designed, constructed, and tested in accordance with Section SA of ASME AG-1-2009 with addenda. o. If used as postfilters, medium-efficiency filters of Minimum Efficiency