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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: Tue, 14-02-1995
ERF description: After last year's control rod problems at Ringhals 4, extra tests are required with more stringent acceptance criteria concerning insertion time. During the recent control rod test, some of the rods had exceeded the newly required shorter insertion time. It was decided to stop the reactor. The reactor was shut down and during the normal cool down process, under subcritical conditions, with the primary coolant borated to 2000 ppm, at 175 degree C due to steam generator level deviation scram was called upon. Three control rods did not reach their bottom position but stopped a few centimeters less than their fully inserted position.
IES level 1.
Justification:
Table II. Severity classification criteria for degradation of defence-in-depth with an initator.
Initiator frequency/initiator probability; High/expected
Safety function availability; within operational limits and conditions
ERF rating date: 13-02-1995
ERF contact person: MR. F. REISCH
ERF address: Sweden
ERF affiliation: SWEDISH NUCLEAR POWER INSPECTORATE (SKI)

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