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Sounding the alarm on China’s plans for nuclear technology

Chinese decision-makers should avoid being overly confident about untried safety technologies. No matter how sound newer-generation nuclear technologies appear, such technologies may never have been sufficiently tested in any part of the world. All newer-generation nuclear technologies still impose significant risks in terms of design experience, construction safety and operational reliability

A warning for China’s nuclear sector, China dialogue, Kevin Jianjun Tu, August 10, 2011  “………The deadly Wenzhou [train] crash highlights the dangers of mega-infrastructure projects moving too far, too fast. Chinese decision-makers should take note, argues Kevin Jianjun Tu…..

Fukushima sounded warning bells with the Chinese government and gave policymakers another chance to reconsider plans for 2020. At a March 16 meeting chaired by premier Wen Jiabao, the State Council decided to call a temporary halt to approval of new nuclear-power plants pending new safety rules, and to adjust mid- and long-term nuclear power plans. This indicated a more cautious national strategy for nuclear power development.

Unfortunately, due to a lack of effective checks and balances on nuclear interest groups, there are signs that the great nuclear leap forward is reemerging. This is clear in the National 12th Five-Year Plan on Science and Technology Development, released by the Ministry of Science and Technology in July, which sets out plans to indigenise the untested Westinghouse AP1000 reactor model, and also to complete a demonstration plant for China’s own CAP1400 reactor by 2015. In comparison to China’s “high efficiency”, a nuclear developer in an OECD country might not be able to obtain permission to build a new, technologically mature plant in the same amount of time.

The technological route taken for nuclear power and high speed rail is identical in China: key technologies have been imported from overseas in “technology for market” swaps. Since China’s first domestically designed and constructed pressurised water reactor was built in 1991 (CNP300 at Qinshan Phase I), China has imported the M310 (French 2nd generation technology), CANDU 6 (Canadian, 2nd generation), AES-91 (Russian, 2nd generation), AP1000 (US, 3rd generation) and EPR (French, 3rd generation).

It is extremely dangerous – in terms of standardisation of design, operational safety and ease of maintenance – for any nation to run so many different types of reactor simultaneously. …..

the Wenzhou collision – and nuclear accidents of the past – show that no technological innovations can completely eliminate the risk of human error in infrastructure design, construction, operation, maintenance and decommissioning. This is particularly important when it comes to nuclear safety.

In response to the safety challenges raised by Fukushima, the Chinese government is reportedly considering abandoning construction of second-generation reactors at existing nuclear-power stations, opting instead to import more advanced technology. That includes more modern “passive” safety features that do not require operator actions or electronic feedback in order to shut down safely in the event of a particular type of emergency. This is a logical development, but Chinese decision-makers should avoid being overly confident about untried safety technologies. No matter how sound newer-generation nuclear technologies appear, such technologies may never have been sufficiently tested in any part of the world. All newer-generation nuclear technologies still impose significant risks in terms of design experience, construction safety and operational reliability….
http://www.chinadialogue.net/article/show/single/en/4458

August 12, 2011 - Posted by | China, safety, technology

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