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, 12-05-1992
ERF description: Unit was operating at 170 MWe with the shut down loops isolated from the reactor inlet and outlet headers and communicated to the bleed condenser to maintain the pressure at 20 kg/cm2 in the shut down loops. On the event date, one of the isolation valves for the north shut down loop had overtravelled resulting in passing of heat transport system water from the north reactor outlet header to the shut down loop and further to the bleed condenser. The bleed condenser high level led to reactor set back. The passing of the isolation valve coupled with the initiation of reactor set back (which caused shrinkage of the heat transport system) resulted in the coolant system pressure to drop and cause reactor trip on low pressure in Primary Heat Transport System. The overtravel of the shut down cooling loop valves was due to suspected inadvertent operation of the relay while working on another relay mounted adjacent to it. The event can be rated as level '0' under A-1R of the INES user's manual.
ERF rating date: 01-01-1992
ERF contact person: MR. V. KUMAR
ERF address: BARC, TROMBAY, India
ERF affiliation: GOVERNMENT OF INDIA, ATOMIC ENERGY REGU, OPERATING PLANTS SAFETY DIVISION, CENTRAL COMPLEX, 4TH FLOOR

This map shows a selection of reports from nuclear and radiological incidents stored in the IAEA NEWS-database.
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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