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: Fri, 19-07-1991
ERF description: DG-1 was not available due to problem with starting air motor. DG-2 was kept inservice in parallel with grid and moderator and process water systems were under shut down. At 11.30 hours, DG-2 tripped due to mal-operation of 45 FR (fire protection) relay. Both DGs became unavailable for a period of 30 minutes.
BASIS FOR RATING: Even though both DGs of Unit I were not available, both DGs of other units were in poised state. 415 V Class III tie and 6.6 KV Class IV tie of both the units were in poised state. Further secondary side of both banks of boilers of Unit 1 were filled with water. Fire fighting pump was in operation and fire water valves to boilers were operable. Deaerator was full with gravity make up to boilers available. Hence all precautions were taken and existing for ensuring core cooling all the time under all conditions. Hence Level 0 was selected.
DIFFICULTIES IN RATING: None.

ERF rating date: 01-01-1991
ERF contact person: Mr. M.S.R. Sarma
ERF address: BARC, Trombay, Bombay 400 085, India
ERF affiliation: Gov.of India, Atomic Energy Reg.Board, Operating Plants Safety Division, 4th Fl, Central Complex

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