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, 23-04-1996
ERF description: This unit was escalating the power after overhaul. At 48% power, as soon as operator made one main feedwater pump start to raise reactor power, Restricted Earth Relay (RER) which was designed to protect Unit Auxiliary Transformer (UAT) was actuated. Then turbine was tripped and caused reactor trip. After investigation, it was revealed that the setpoint of RER was 0.1A and was exceeded by influence of starting current of main feedwater pump. Setpoint of RER was adjusted from 0.1A to 0.2A as other units in Korea and plant was returned to operation.
There was no release of radioactive materials 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: 09-04-1996
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.
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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