List of Approved Spent Fuel Storage Casks: NAC International, Inc., MAGNASTOR® System; Certificate of Compliance No. 1031, Amendment No. 5

The U.S. Nuclear Regulatory Commission (NRC) is confirming the effective date of June 29, 2015, for the direct final rule that was published in the Federal Register on April 15, 2015. This direct final rule amended the NRC's spent fuel storage regulations by revising the NAC International, Inc., MAGNASTOR[supreg] System listing within the "List of approved spent fuel storage casks" to include Amendment No. 5 to Certificate of Compliance (CoC) No. 1031. Amendment No. 5 makes numerous changes to the Technical Specifications (TSs) including adding a new damaged fuel assembly, revising the maximum or minimum enrichments for three fuel assembly designs, adding four-zone preferential loading for pressurized-water reactor fuel assemblies and increasing the maximum dose rates in limiting condition for operation (LCO) 3.3.1, and other editorial changes to Appendices A and B of the TSs.