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NRC RIN: 3150-AI89 Publication ID: Spring 2011 
Title: ●List of Approved Spent Fuel Storage Casks: NUHOMS® HD System, Revision 1 [NRC-2011-0002] 
Abstract: The direct final rule amends the Commission's regulations by revising the Transnuclear, Inc., NUHOMS® HD System to include Amendment No. 1 to the Certificate of Compliance (CoC). Amendment No. 1 will revise the definitions for Damaged Fuel Assembly and Transfer Operations; add definitions for Fuel Class and Reconstituted Fuel Assembly; add Combustion Engineering 16x16 class fuel assemblies as authorized contents; reduce the minimum off-normal ambient temperature from -20°F to -21°F; expand the authorized contents of the NUHOMS® HD System to include pressurized water reactor fuel assemblies with control components; reduce the minimum initial enrichment of fuel assemblies from 1.5 weight percent uranium-235 to 0.2 weight percent uranium-235; clarify the requirements of reconstituted fuel assemblies; add requirements to qualify metal matrix composite neutron absorbers with integral aluminum cladding; clarify the requirements for neutron absorber tests; delete use of nitrogen for draining the water from the dry shielded canister (DSC), and allow only helium as a cover gas during DSC cavity water removal operations; and make corresponding changes to the technical specifications. 
Agency: Nuclear Regulatory Commission(NRC)  Priority: Substantive, Nonsignificant 
RIN Status: First time published in the Unified Agenda Agenda Stage of Rulemaking: Completed Actions 
Major: No  Unfunded Mandates: No 
CFR Citation: 10 CFR 72   
Legal Authority: 42 USC 2201    42 USC 5841   
Legal Deadline:  None
Timetable:
Action Date FR Cite
Proposed Rule  01/13/2011  76 FR 2277   
Proposed Rule Comment Period End  02/14/2011    
Direct Final Rule  01/13/2011  76 FR 2243   
Confirmation of Effective Date  03/09/2011  76 FR 12825   
Direct Final Rule Effective  03/29/2011    
Regulatory Flexibility Analysis Required: No  Government Levels Affected: None 
Small Entities Affected: No 
Included in the Regulatory Plan: No 
RIN Data Printed in the FR: No 
Agency Contact:
Gregory Trussell
Nuclear Regulatory Commission
Office of Federal and State Materials and Environmental Management Programs,
Washington, DC 20555-0001
Phone:301 415-6445
Email: gregory.trussell@nrc.gov