Document: NUREG-0800
Document ID: 216e7734-89e2-46c4-b2bc-9018045923c4
Document Type: srp
Title: through 6.5.4 and 15.0.3.  Upon request, the organization responsible for
Source: NUREG-0800
Source URL: https://www.nrc.gov/docs/ML1007/ML100700256.pdf
Revision Date: 2023-06
Chapter: 6
Section ID: 6.5.2
CFR Part: 
CFR Title: 

Content:
of elemental iodine and organic iodides given in Tables 2 and 1 of RG 1.52 revisions 2 and 3 respectively and a system efficiency of 99% for removal of particulates resulting from a DBA. The assigned efficiencies are for the organization responsible for the review of design basis accident radiological consequence analyses use in accident analyses to calculate offsite doses to the whole body and thyroid. B. The system has provisions to prefilter air, remove moisture, and meet the guidance of RG 1.52 for charcoal adsorption. C. The system is redundant, is designed to Seismic Category I requirements, is able to actuate automatically, and is limited to an airflow rate of approximately 15 m3/s (30,000 cfm). D. Design of instrumentation for ESF atmosphere cleanup systems conforms to the guidelines of RG 1.52 and to the recommendations of ASME N509-1989. Instrumentation, readout, recording, and alarm provisions for ESF atmosphere cleanup systems meet the minimum guidance given in Table 6.5.1-1 of this SRP section. E. Environmental design guidelines for acceptability are based on the conditions following a DBA. Radiation source terms are consistent with the guidelines in RGs 1.3, 1.4, 1.1831, 1.7, and 1.25. F. Fabrication of the charcoal tray and screen involves all-welded construction to preclude potential loss of charcoal from adsorber cells. Further guidance on charcoal loss is found in NRC Bulletin 80-03. G. Components such as demisters, heaters, prefilters, HEPA filters, mounting frames, filter housings, adsorbent, fans, ductwork, and dampers are designed, constructed, and tested in accordance with ASME N509-1989 design and qualification testing criteria. Water drain design and the accessibility of components and ease of maintenance are in accordance with the recommendations of ERDA 76-21 and ASME N509-1989. 1RGs 1.3, 1.4, and 1.25 provide guidance related to Technical Information Document (TID) 14844, ACalculation of Distance Factors for Power and Test Reactor