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: Thu, 13-03-2003
ERF description: Unit 6 was in the guaranteed shutdown state and Spring Location and Relocation (SLAR) tool was being used in the pressure tubes as part of the planned fuel channel maintenance. While performing SLAR operation in fuel channel G12, an electrical fault in the tool resulted in a discharge of electric energy that caused damage to both the pressure tube and the calandria tube. The tool was retracted and it was later determined that the Primary Heat Transport System (PHTS) coolant was leaking into the moderator. Inspection exhibited a through hole in the pressure tube approximately 3 mm in diameter and a through hole in the calandria tube of 6 mm in diameter. Operations personnel proceeded with stabilization of unit 6 by installing isolating shield plugs to stop the flow of PHTS coolant into the moderator. The pressure tube and calandria tube have been replaced and the unit returned to service.
ERF rating date: 13-03-2003
ERF contact person: Helmy Ragheb
ERF address: P.O. Box 1046, Station "B", Ottawa, ON, Canada
ERF affiliation: Canadian Nuclear Safety Commission

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