Report to Congress on Abnormal Occurrences - Fiscal Year 2000 (NUREG-0090, Volume 23)

On this page:

Download complete document

Publication Information

Date Published: April 2001

Division of Risk Analysis and Applications
Office of Nuclear Regulatory Research
United States Nuclear Regulatory Commission
Washington, DC 20555-0001

Availability Notice


Section 208 of the Energy Reorganization Act of 1974 (Public Law 93-438) identifies an abnormal occurrence (AO) as an unscheduled incident or event that the U.S. Nuclear Regulatory Commission (NRC) determines to be significant from the standpoint of public health or safety. The Federal Reports Elimination and Sunset Act of 1995 (Public Law 104-66) requires that AOs be reported to Congress annually. This report includes those events that the NRC determined were AOs during Fiscal Year 2000.

The report discusses three AOs at facilities licensed or otherwise regulated by the NRC. One event involved a steam generator tube failure at a nuclear power plant, the second event resulted in overexposures of occupational workers at a radiopharmaceutical manufacturing plant, and the third event involved a medical brachytherapy misadministration. The report also discusses six medical AOs at facilities licensed by Agreement States. Agreement States are those States that have entered into a formal agreement with NRC pursuant to Section 274 of the Atomic Energy Act (AEA) to regulate certain quantities of AEA material at facilities located within their borders. Currently, there are 32 Agreement States. Four of the Agreement State AOs involved gamma stereotactic radiosurgery misadministrations, one event involved a brachytherapy misadministration, and one involved a teletherapy misadministration. In addition, Appendix C of the report, "Other Events of Interest," includes two non-power reactor events and one materials event.

Page Last Reviewed/Updated Wednesday, March 24, 2021