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三代核电国产化率超85% 四代核电示范工程即将建成
2017-09-01 07:21:12 中国经济网
四代核电是目前最安全的核电技术,被认为是一种“不会熔毁的反应堆”。张作义说,这种核反应堆在极端事故下,不需要任何干预,依靠材料本身的能力,就能够保证反应堆不会熔毁,放射性不会大量外泄。
总之,目前我国核电专项重点任务顺利推进。AP1000引进消化吸收基本完成,CAP1400设计通过审查,关键试验全部完成,具备开工建设条件。
此外,通过核电专项任务,我国核电在共性技术方面夯实了研发基础,建设了一批国际领先的大型台架和试验设施,为我国新型核电机型设计持续提升核电创新研发能力提供了保障;在装备制造方面的能力和水平大幅提升,压力容器、蒸汽发生器、主管道等一大批重大设备实现了国产化,屏蔽电机主泵、数字仪控系统、爆破阀等核心设备均已完成样机制造,高温堆控制棒驱动机构、燃料装卸料系统等已实现供货;在材料研制方面也实现了基础性突破,超大型锻件、690合金管、压力容器密封件、核级锆材等关键材料加工制造技术取得了实质性突破,高温堆燃料元件已经产业化生产,核级焊材研制成功改变了我国核电焊接材料长期依赖进口的局面,首条从海绵锆到成品管、板、棒、带材的完整生产线建成,为CAP1400和华龙一号的自主化燃料研发提供了有力支撑。(经济日报记者 佘惠敏)
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