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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: Wed, 04-05-1994
ERF description: On 30 March 1993, the unit was operating at 300 MWe full power.
At 10:13 according to the test requirements the unit output was increased from 300 MWe to 310 MWe. As a result, two main feedwater regulating valves were fully opened. The no.2-SG water level was relatively stable but the no. 1 SG water level decreased. There was no effect even if the main feedwater bypass valve was opened manually. At 10:16, unit output decreased to 305 MWe. At 10:19 no. 3 main feedwater pump started automatically. As a result, the SG high-high water level occurred, leading to turbine trip and reactor trip.
ERF rating date: 20-01-1994
ERF contact person: Mr. Cao Guanping
ERF address: P.O. Box 2102, Beijing, China
ERF affiliation: Department of Nuclear Power, CNNC

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