With the end of last “Noise Test”on 4th March, the test on performance of unit #4 of Quang Ninh Power Plant(Phase Ⅱ) in Vietnam had been finished completely. In comparison with the test on performance of unit #3(Phase Ⅱ), the efficiency and quality had been improved dramatically. With the consent of owner, all units were stopped for defect maintenance. After that, unit #4 was ignited at 0h on 16th March 2014 punctually. The last startup before PAC was attached to great importance, implying that unit #4 was set to turn over to Vietrnamese owner and also Project PhaseⅡ soon would be terminated successfully.
    After unit #4 shut-down, maintenance staff checked EH oil system of turbine carefully and proposed solutions concerning over-current and over-flow of EH oil pump during running. They pumped all EH oil to filter, replaced GV servo valve and flushed solenoid valve of main steam valve. The emulsion of low pressure bypass oil station was also removed totally. With coordination of all technicians, unit #4 was started smoothly.

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