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Event Report Forms (ERFs) are filed to the IAEA. Sometimes there are multiple event reports, updating the rating, the event description. Here you only see the latest event report

ERF send date: Mon, 16-12-1991
ERF description: The unit was operating at nominal power. While performing scheduled refueling (replacement) of a spent fuel assembly (FA) in the 41-40 fuel channel FA separation from the connecting bar occurred, which is a deviation from the normal refueling process. In accordance with the technical specification the unit was scrammed by emergency protection system button. The 41-40 returned to its usual location. Radiation situation in the central hall, sanitary-protective zone and in the supervision area remained unchanged. Breach of unit limiting conditions for operation was not observed. After the reactor was brought to cold shutdown the FA in question was transferred to the spent fuel pool.
The 41-40 fuel channel was sealed with a plug in the defueled condition. During the coming preventive maintenance outage detailed inspection of the fuel channel and of the affected FA will be undertaken.
ERF rating date: 06-12-1991
ERF contact person: I. Jouk
ERF address: (VNIIAES) FERGANSKAYA 25, MOSKOW 109507, Russian Federation
ERF affiliation: Ministry of the Russian Federation for, Atomic Energy, All Russian Research Inst. for Nuclear P

This map shows a selection of reports from nuclear and radiological incidents stored in the IAEA NEWS-database.
Locations are estimates. Contact us if a location is wrong.
The map shows a maximum of 100 incidents. If hundred incidents or more are within the map, the yellow perimeter indicates from where events are excluded. Drag or zoom the map to explore different areas.

Power Reactor Research Reactor Radwaste Facility Enrichment Facility Radiation Source Irradiation/Accelerator Facility Transportation

Fuel Fabrication Fuel Reprocessing Research Facility Mining/Milling Radioisotope Processing/Handling Facility Other