This report documents the current status of evaluations and modifications to the diesel generator status annunciators in a number of US nuclear power plants. These modifications may be required in order to: ensure that all conditions which might render the diesel generators incapable of automatic starting are annunciated in the control room; ensure that the wording on the control room annunciator clearly indicates to the operator that the diesel generator is unavailable if such is the case; and separate disabling and non-disabling annunciation.
DOE contract number: W-7405-ENG-48 OSTI Identifier 5556181 Research organization: EG and G, Inc., San Ramon, CA (USA). Energy Measurements Group. Research organization: Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States).