Stichting Laka

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: Tue, 16-07-1996
ERF description: Ulchin unit 1 was in reducing power operation for the 7th scheduled maintenance and refueling.
In checking the ability of replacement of turbine governor control system during operation, rapid increase of turbine generator power from 126 MWe to 170 MWe occurred at 18% of reactor power as the frequency of global grid network increased. In the course of controlling the power balance between primary and secondary side, the level of #3 steam generator was increased and this S/G level high signal initiated turbine trip and then reactor trip eventually.
There was no release of radioactive material outside the reactor building and no unplanned exposure to employees.
Justification: as full safety functions were available, the event is rated at level "0" as per user's manual Part III, Table II, A1.
ERF rating date: 10-07-1996
ERF contact person: JEONG-IL YOO
ERF address: GOVERNMENT COMPLEX II, South Korea
ERF affiliation: NUCLEAR INSPECTION AND ENFORCEMENT DIV, ATOMIC ENERGY OFFICE, MIN. OF SCIENCE & TECHN.

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