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, 23-07-1991
ERF description: The event took place during the start up of the unit after refuelling. Due to a leak in the reactor pressure measuring system steam blew out in a room where transmitters of measuring systems were installed. Some transmitters failed, among others those measuring water level in the steam generators no. 1, 2 and 3 for protective purposes. The reactor protection shut down the reactor. The unit was cooled down to investigate the cause of the failure and to begin the repair work. During cooldown the leak was located and climated by closing out the affected section. Repair and replacement of the damaged measuring devices has been already completed.
BASIS FOR RATING: Initiator: primary circuit seal leakage within the room of transmitters. Initiator frequency: expected. Safety system availability: B. Rating: 1/2 (Table A2), 1 is selected.
DIFFICULTIES IN RATING: There was a debate about the presence of a real initiator (addendum, A4) which influences the procedure of classification. Though the level 1 classification of the event met common approval.
ERF rating date: 01-07-1991
ERF contact person: Ms. I. Czoch
ERF address: P.O. Box 565, H-1374 Budapest, Hungary
ERF affiliation: Hungarian National Atomic Energy, 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