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General News 经济新闻 / 中国否认台山核电站辐射泄露,承认燃料棒受损
« on: June 19, 2021, 12:46:48 AM »
中国否认台山核电站辐射泄露,承认燃料棒受损
KEITH BRADSHER2021年6月17日2013年在建的广东省台山核电厂。中国周三说,核电厂的个别铀燃料棒出现破损,这在反应堆中并不罕见。 Peter Parks/Agence France-Presse — Getty ImagesSHANGHAI — The Chinese government said on Wednesday that “about five” of the uranium fuel rods inside a nuclear power plant in southeastern China had been damaged, but added that no radiation had leaked out of reactors at the site.上海——中国政府周三说,位于中国东南部的一座核电厂“约为五根左右”铀燃料棒受损,但补充说,该核电厂没有发生反应堆辐射泄漏。Regulators have also reviewed and approved limits on how much radioactive gas is allowed to accumulate in the water at the reactor, China’s National Nuclear Safety Administration said in a statement. Nuclear scientists in the United States and Europe said in interviews earlier this week that a buildup of radioactive gas in the water and steam surrounding the fuel rods, while not uncommon at reactors elsewhere, is often a sign of poor design, manufacturing or management.中国国家核安全局在声明中还说,监管机构审查批准了反应堆冷却剂中的放射性比活度的相关限值。本周早些时候,美国和欧洲的核科学家在接受采访时说,燃料棒周围的水和蒸汽中放射性气体的积聚,虽然在其他地方的反应堆中并不罕见,但往往是设计、制造或管理不善的标志。The Taishan Nuclear Power Plant is on the southeastern coast of China, about 80 miles southwest of Hong Kong. The power plant’s Reactor One, which has encountered difficulties in recent days, has more than 60,000 fuel rods.中国东南沿海的台山核电厂位于距香港西南约130公里的地方。该核电厂的1号机组近日来遇到一些困难,这个机组总共有6万多根燃料棒。The reactor is designed to operate safely despite damage to up to 0.25 percent of the fuel rods, the safety agency said. That would be at least 150 fuel rods.国家核安全局说,设计中假设的燃料组件最大安全破损比例是0.25%。达到该上限需有至少150根燃料棒受损。Najmedin Meshkati, an engineering professor specializing in nuclear safety at the University of Southern California, said that it is fairly common for a few fuel rods to suffer damage in a nuclear reactor. But it is less common for radioactive gases to accumulate in the water and steam around the fuel rods to the point that regulators need to review what levels are safe, he said.南加州大学(University of Southern California)核安全领域的工程学教授纳杰梅丁·梅什卡蒂(Najmedin Meshkati)说,核反应堆中有少数燃料棒受损相当常见。但他说,燃料棒周围的水和蒸汽中,放射性气体的积聚程度达到了需要监管机构来审查什么水平属于安全的情况并不常见。“There is no question that something has happened,” he said, while adding that events inside the reactor are unlikely to pose a serious safety threat.“发生了一些情况,这毫无疑问,”他说,同时还说,反应堆内部的情况不太可能构成严重的安全威胁。The two nuclear reactors at Taishan use a new design developed in France. Two large French companies involved in the construction and operation of the reactors, Framatome and EDF, publicly acknowledged on Monday that difficulties had occurred in the operation of Reactor One at the site.台山核电厂的两个机组采用的是法国研制的新设计。参与机组建设和运营的两家法国大公司法玛通(Framatome)和法国电力集团(EDF)已在周一公开承认,台山核电厂1号机组的运行出现了困难。Fuel rods in nuclear reactors in the West also occasionally leak traces of radioactive gases into the water and steam that surrounds them. Leaks can occur when the exterior cladding of the rods is damaged by the bristles from brushes used during maintenance or other contaminants.西方国家核电厂机组中的燃料棒偶尔也会向其周围的水和蒸汽泄漏微量放射性气体。燃料棒的外部包层可能会被维护时使用的刷子刚毛或其他污染物损坏,导致泄漏发生。But China’s safety regulator, which is part of the Ministry of Ecology and the Environment, said that no leak into the environment had occurred. “At present, monitoring results of the radiation environment around the Taishan Nuclear Power Plant show that there is no abnormality in the radiation level around the nuclear power plant,” the statement said.但中国生态环境部下属的核安全局表示,没有发生环境泄漏。“目前,台山核电厂周边辐射环境监测结果显示核电厂周边辐射环境水平未见异常,”该机构的声明称。While the fuel rods have leaked a little into the surrounding water and steam, the water system itself is not leaking, the safety agency said. And even if the water system were to leak, the whole reactor is inside a very thick concrete dome that has not been breached, the agency added.国家核安全局说,虽然燃料棒周围的冷却水和蒸汽中出现了从燃料棒泄露出来的气体,但冷却剂系统本身没有发生泄漏。该机构补充说,即使冷却剂系统发生泄漏,为反应堆提供安全屏障的非常厚的混凝土密封壳仍完好无损。Liu Yi对本文有研究贡献。Keith Bradsher是《纽约时报》上海分社社长,曾任香港分社社长、底特律分社社长。他之前曾驻华盛顿报道国际贸易新闻,后驻纽约报道美国经济和通信行业,还曾担任航空业记者。欢迎在Twitter上关注他 @KeithBradsher。翻译:纽约时报中文网点击查看本文英文版。
Source: 中国否认台山核电站辐射泄露,承认燃料棒受损
KEITH BRADSHER2021年6月17日2013年在建的广东省台山核电厂。中国周三说,核电厂的个别铀燃料棒出现破损,这在反应堆中并不罕见。 Peter Parks/Agence France-Presse — Getty ImagesSHANGHAI — The Chinese government said on Wednesday that “about five” of the uranium fuel rods inside a nuclear power plant in southeastern China had been damaged, but added that no radiation had leaked out of reactors at the site.上海——中国政府周三说,位于中国东南部的一座核电厂“约为五根左右”铀燃料棒受损,但补充说,该核电厂没有发生反应堆辐射泄漏。Regulators have also reviewed and approved limits on how much radioactive gas is allowed to accumulate in the water at the reactor, China’s National Nuclear Safety Administration said in a statement. Nuclear scientists in the United States and Europe said in interviews earlier this week that a buildup of radioactive gas in the water and steam surrounding the fuel rods, while not uncommon at reactors elsewhere, is often a sign of poor design, manufacturing or management.中国国家核安全局在声明中还说,监管机构审查批准了反应堆冷却剂中的放射性比活度的相关限值。本周早些时候,美国和欧洲的核科学家在接受采访时说,燃料棒周围的水和蒸汽中放射性气体的积聚,虽然在其他地方的反应堆中并不罕见,但往往是设计、制造或管理不善的标志。The Taishan Nuclear Power Plant is on the southeastern coast of China, about 80 miles southwest of Hong Kong. The power plant’s Reactor One, which has encountered difficulties in recent days, has more than 60,000 fuel rods.中国东南沿海的台山核电厂位于距香港西南约130公里的地方。该核电厂的1号机组近日来遇到一些困难,这个机组总共有6万多根燃料棒。The reactor is designed to operate safely despite damage to up to 0.25 percent of the fuel rods, the safety agency said. That would be at least 150 fuel rods.国家核安全局说,设计中假设的燃料组件最大安全破损比例是0.25%。达到该上限需有至少150根燃料棒受损。Najmedin Meshkati, an engineering professor specializing in nuclear safety at the University of Southern California, said that it is fairly common for a few fuel rods to suffer damage in a nuclear reactor. But it is less common for radioactive gases to accumulate in the water and steam around the fuel rods to the point that regulators need to review what levels are safe, he said.南加州大学(University of Southern California)核安全领域的工程学教授纳杰梅丁·梅什卡蒂(Najmedin Meshkati)说,核反应堆中有少数燃料棒受损相当常见。但他说,燃料棒周围的水和蒸汽中,放射性气体的积聚程度达到了需要监管机构来审查什么水平属于安全的情况并不常见。“There is no question that something has happened,” he said, while adding that events inside the reactor are unlikely to pose a serious safety threat.“发生了一些情况,这毫无疑问,”他说,同时还说,反应堆内部的情况不太可能构成严重的安全威胁。The two nuclear reactors at Taishan use a new design developed in France. Two large French companies involved in the construction and operation of the reactors, Framatome and EDF, publicly acknowledged on Monday that difficulties had occurred in the operation of Reactor One at the site.台山核电厂的两个机组采用的是法国研制的新设计。参与机组建设和运营的两家法国大公司法玛通(Framatome)和法国电力集团(EDF)已在周一公开承认,台山核电厂1号机组的运行出现了困难。Fuel rods in nuclear reactors in the West also occasionally leak traces of radioactive gases into the water and steam that surrounds them. Leaks can occur when the exterior cladding of the rods is damaged by the bristles from brushes used during maintenance or other contaminants.西方国家核电厂机组中的燃料棒偶尔也会向其周围的水和蒸汽泄漏微量放射性气体。燃料棒的外部包层可能会被维护时使用的刷子刚毛或其他污染物损坏,导致泄漏发生。But China’s safety regulator, which is part of the Ministry of Ecology and the Environment, said that no leak into the environment had occurred. “At present, monitoring results of the radiation environment around the Taishan Nuclear Power Plant show that there is no abnormality in the radiation level around the nuclear power plant,” the statement said.但中国生态环境部下属的核安全局表示,没有发生环境泄漏。“目前,台山核电厂周边辐射环境监测结果显示核电厂周边辐射环境水平未见异常,”该机构的声明称。While the fuel rods have leaked a little into the surrounding water and steam, the water system itself is not leaking, the safety agency said. And even if the water system were to leak, the whole reactor is inside a very thick concrete dome that has not been breached, the agency added.国家核安全局说,虽然燃料棒周围的冷却水和蒸汽中出现了从燃料棒泄露出来的气体,但冷却剂系统本身没有发生泄漏。该机构补充说,即使冷却剂系统发生泄漏,为反应堆提供安全屏障的非常厚的混凝土密封壳仍完好无损。Liu Yi对本文有研究贡献。Keith Bradsher是《纽约时报》上海分社社长,曾任香港分社社长、底特律分社社长。他之前曾驻华盛顿报道国际贸易新闻,后驻纽约报道美国经济和通信行业,还曾担任航空业记者。欢迎在Twitter上关注他 @KeithBradsher。翻译:纽约时报中文网点击查看本文英文版。
Source: 中国否认台山核电站辐射泄露,承认燃料棒受损