Fuel Retrievability in Spent Fuel Storage Applications

The U.S. Nuclear Regulatory Commission (NRC) is issuing Interim Staff Guidance (ISG)-2, Revision 2, ``Fuel Retrievability in Spent Fuel Storage Applications.'' This revision to the guidance was developed to improve regulatory clarity due to uncertain duration of spent fuel storage in an independent spent fuel storage installation (ISFSI). The revision is to provide improved guidance to the staff on the practical implementation of determining whether storage systems are designed to allow ready retrieval of spent fuel.