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Baosteel Special Steel evaporator heat transfer tube "service" one year healthy and flawless

Mar. 21, 2017

据悉,2016年1月1日正式商运的广西防城港核电站1号机组,于今年2月份首次停堆进行了第一次大修在役检测。该机组核岛“心脏”中应用的由宝钢特钢制造的我国首批国产化蒸汽发生器用合金传热管,此次接受了第三方中广核检测技术有限公司进行的涡流检测。检测结果表明,我国首批核电蒸发器690合金传热管服役核电站一个周期后,完全符合在役验收标准。

It is reported that the No.1 unit of Guangxi Fangchenggang Nuclear Power Station, which was officially commercialized on January 1, 2016, was first shut down in February this year for the first overhaul inspection. The first batch of alloy heat transfer tubes for domestically produced steam generators manufactured by Baosteel Special Steel, which is used in the nuclear heart of the unit, has been subjected to eddy current testing by Third Party China Nuclear Power Inspection Technology Co., Ltd. The test results show that China's first nuclear power evaporator 690 alloy heat transfer tube service nuclear power plant after one cycle, fully meet the in-service acceptance criteria.


    2007年6月,按照国家大力发展核电的总体战略规划以及对清洁能源的需求,宝钢、江苏银环公司和中广核集团共同出资,由宝钢特钢有限公司控股组建了宝银特种钢管有限公司,并兴建了国内第一条核电蒸汽发生器用690U型管专业生产线。2009年12月,宝银公司与东方重机(广州)重型机器有限公司签订了防城港1号机组蒸发器用690合金传热管的供货合同,2010年12月实现首批国产化产品交付,2015年8月核电站完成传热管役前检测,2017年2月完成第一次在役检测。首批合同从交付到核电站第一次在役检测历时7年。

In June 2007, in accordance with the country's overall strategic plan for the development of nuclear power and the demand for clean energy, Baosteel, Jiangsu Yinhuan Co., Ltd. and China Guangdong Nuclear Power Group jointly invested and established Baoyin Special Steel Tube Co., Ltd. under the control of Baosteel Special Steel Co., Ltd., and built the first professional production line of 690U type tube for nuclear steam generator in China. In December 2009, Baoyin Company and Dongfang Heavy Machinery (Guangzhou) Co., Ltd. signed a supply contract for the 690 alloy heat transfer tubes for the evaporator of Fangchenggang Unit 1, and the first batch of domestically products was delivered in December 2010. In August 2015, the nuclear power plant completed the test of heat transfer tube and the first in-service test was completed in February 2017. The first batch of contracts was delivered to the first inspection of the nuclear power plant for 7 years.


   宝钢特钢、宝银公司建立了完善的核质保体系,并创新管理模式,以确保产品的万无一失。下线的每一支成品管都打上了“出生证明”,其制造工艺、用途去向等信息均可在数据库中查询到。此次在役检测中,在中广核检测技术有限公司的协助下,双方无损检测人员就防城港1号机组蒸发器用690合金传热管的检测,进行了深入的技术交流。通过对比传热管在制造、役前和在役三个阶段的内涡流检测数据,分析显示:传热管在各阶段的检测无明显信号变化。同时,与国外同类型机组传热管进行了综合比较,部分信号如支撑板附近的凹痕(DNT)显示等信号与国外相当,但对于影响在役涡流判定的信号,如磨损信号显示(MBM),宝武传热管较国外产品明显趋少,较大地提高了核电站在役涡流检测信号的可识别性。

Baosteel Special Steel and Baoyin Company have established a complete nuclear quality assurance system and innovative management mode to ensure the products are safe. Every finished product of the offline line is marked with a “birth certificate”, and information such as the manufacturing process and the purpose of use can be found in the database.

In the in-service inspection, with the assistance of China Guangdong Nuclear Testing Technology Co., Ltd., the non-destructive testing inspector of the two sides conducted in-depth technical exchanges on the detection of 690 alloy heat transfer tubes for the evaporator of Fangchenggang Unit 1. By comparing the internal eddy current test data of the heat transfer tube in the three stages of manufacturing, pre-service and in-service, the analysis shows that there is no obvious signal change in the detection of the heat transfer tube at each stage. At the same time, compared with the heat transfer tubes of the same type of units abroad, some signals, such as the dent near the support plate (DNT), are equivalent to foreign countries, but for signals affecting the determination of in-service eddy currents, such as wear signal display (MBM), Baowu heat transfer tubes are significantly less than foreign products, which greatly improves the identifiability of in-service eddy current detection signals of nuclear power plants.

Baosteel Special Steel evaporator heat transfer tube "service" one year healthy and flawless

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