Proof test in hot condition on steam separation device in steam generator for 1000 MW PWR nuclear power plant

Steam-water proof test under nuclear power plant operation condition on the steam separation devices in steam generator for 1000 MW PWR nuclear power plant has been conducted. The test result indicates that the steam humidity (carryover) in outlet of the steam separation device with optimized design features obtained by previous air-water screening test in cold condition is 0.0021% under nuclear power plant operation condition, which is less thean the standard steam humidity (0.1%) required by the design of steam generator for 1000 MW PWR nuclear power plant. Its performance under severe condition meets the design demand, and it is better than that of the advanced steam separation devices in other countries. (authors)