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, 14-11-1995
ERF description: Yonggwang was operated at rated full power.
During normal operation, abnormal status light of turbine control panel was found. After investigation, abnormal electric circuit was removed and changed to a new one. Unknown noise signal was induced to this process. Abnormal signal (turbineoverspeed pre-trip) arose and made governor valves of high pressure turbine close. Condenser and atmospheric dump valves were opened to decrease steam line pressure. As abnormal signal disappeared 1 minute later, governor valves were reopened and steam pressure of main steam line decreased rapidly. Although main steam line pressure did not reach the setpoint, lead/lag compensation effect made safety injection begin. There was no release of radioactive materials outside the reactor building and no unplanned exposure to employees.
ERF rating date: 06-10-1995
ERF contact person: Y.C. KANG
ERF address: KYUNGGI-DO, 427-760, GWACHEON CITY, South Korea
ERF affiliation: NUCLEAR INSPECTION AND ENFORCEM. DIV, MINISTRY OF SCIENCE AND TECHNOL., GOVERNMENT COMPLEX II

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