in July 2007 the Chinese ordered four AP1000's, two to be built at Sanmen and two at Haiyang. These are the first orders ever placed for Generation III+ reactors, with the potential to take China into a nuclear technology leadership role over the coming years.
Under a subcontract with Westinghouse, Doosan of Korea will supply reactor vessels, steam generators and integrated head assemblies for the four reactors.
The AP1000 technology is an "advanced passive" pressurized water reactor approved by the US Nuclear Regulatory Commission, but it has never been actually used in any operating power plant.
The AP1000, previous post, features passive safety systems to a greater extent than any other commercially available power reactor. In particular passive systems are used for core cooling, containment isolation and containment cooling, and maintenance of main control room emergency habitability. The passive systems are sufficient to automatically establish and maintain core cooling and containment integrity indefinitely following an event that compromises the acceptable performance requirements of the structures, systems, and components, with no operator action and no on-site or off-site power sources. All safety-related electrical power requirements are met by class 1E batteries that meet aging and vibration standards for batteries used in nuclear power generating stations.
The passive core cooling system performs safety injection and reactor coolant make-up from core make-up tanks, accumulators and the incontainment refuelling water storage tank (IRWST). It also provides residual heat removal by means of a passive heat exchanger and the IRWST.
According to government plan, China will have an installed nuclear power capacity of 40m kW by 2020, accounting for four per cent of the country's total.