September 1999 Highlight

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Bulgaria

Progress Made on Developing Emergency Operating Instructions for Kozloduy

The U.S. team is participating in an IAEA mission on the development and validation/verification of EOIs for Kozloduy NPP. In late August, stakeholders in this effort met in Sofia. Other participants included representatives of IAEA, the Bulgarian Nuclear Safety Authority (BNSA), Kozloduy NPP, Energoproekt, Bulgarian Academy of Science (INRNE), Temelin NPP, and Bohunice NPP. A PNNL specialist represented DOE at the meeting. The main purpose of the meeting was to discuss the status of efforts by procedure writers and analysts to develop and validate the Kozloduy VVER-1000 and VVER-440/230 symptom-based EOIs. Symptom-based EOIs allow rapid response to emergency conditions, even while efforts continue to find the root cause of the problem. The meeting consisted of presentations from BNSA, Kozloduy NPP, INRNE, and Energoproekt plus information exchanges between the IAEA representatives and their Bulgarian colleagues. The result of this meeting was a better understanding of the EOI development effort at Kozloduy NPP and how the IAEA and DOE might further support this effort to facilitate prompt implementation of symptom-based EOIs at Kozloduy NPP. (Dennis Meyers, DOE, 301-903-1418; Kent Faris, PNNL, 509-372-4068)