, E7-20676. Supplement 1 to Revision 9 of NUREG-1021, “Operator Licensing Examination Standards for Power Reactors,” and Supplement 1 to Revision 2 of NUREG-1122 [and -1123], “Knowledge and Abilities Catalog for Nuclear Power Plant Operators: ..., 72 FR (10/19/2007), 2007 Issues, Federal Register