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, 26-09-1995
ERF description: At 10.22 sudden closusre of the Main Steam Isolation Valve (MSIV) generated Safety Injection (SI) signal which actuated reactor scram Loop no. 1. MSIV closure resulted in increased steam flow from the Steam Generator no. 2 and drop of the Loop no.2 Steam Line Pressure below the setpoint for SI loop No. 1. MSIV closure at "fast speed" was caused by the loss of power to the MSIV Solenoid Valves. The reason was a deteriorated fuse FD 60 on the 125 V DC power supply. The reactor scram sequence went on according to the design and all the safety systems were fully available. The NPP was stablized in hot standby mode.
Justifiaction for Rating:
Procedure based on initiators and safety function operability
- reactivity control
cooling of radioactive materials:
Reactor trip
Availability: Full
Final Rating = 0
ERF rating date: 26-09-1995
ERF contact person: Mr. M.F. Levstek
ERF address: Vojkova 59, 1113 LJUBLJANA, Slovenia
ERF affiliation: Slovenian Nuclear Safety Administration

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