[en] The report is divided into three sections. The first section contains summaries of operation of commercial U.S. nuclear units, the Glossary, and any known Errata. The second section contains two pages of detailed information on each individual nuclear unit including information provided by NRC Regional Offices and I and E Headquarters, and information received from the utilities concerning the operation of their unit during the report period. The third section is an Appendix which contains copies of the letters establishing the procedures for publication of this report, comparative statistics, identification of nuclear power plants within regional Electrical Reliability Councils, the relative status of U.S. nuclear electrical production to all U.S. electrical production by state, and Regulatory Guide 1.16 Revision 4