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International High Level Radioactive Waste Management 2019

SMR Design Profile
Aug 14, 2012

Full Name
China Nuclear Power Unit
Shanghai Nuclear Engineering Research and Design Institute (SNERDI)
MWe (net)

Design Profile Description

Design Image
Source: CNNC

China’s first ever domestic commercial reactor design is the CNP-300, of which there are currently two operating units in China. Qinshan Phase I Unit 1 utilizes this design, which is a 310 MWe gross (288 MWe net) two-loop PWR design with a 40-year initial design life. Qinshan I-1 was the first indigenously designed, constructed, and operated nuclear power plant (NPP) in China with construction starting in 1985, connection to the grid in 1991, and commercial operation in 1994. Located in the Zhejiang province, it is owned by China National Nuclear Corporation (CNNC) and operated by CNNC’s subsidiary Qinshan Nuclear Power Company (QNPC).

The primary designer of the CNP-300 is SNERDI; however, according to CNNC, more than 100 institutes, universities, and factories participated in the construction of Qinshan I-1. The nuclear island was mainly Chinese supplied with Shanghai Electric Corporation (SEC) providing steam generators, pressurizers, and reactor internals. However, foreign supply was also necessary, with Japan’s Mitsubishi Heavy Industries (MHI) supplying the reactor vessel. The main components of the conventional island (turbine and generator) were also provided by SEC.

China’s sole NPP export so far has also been the CNP-300 reactor provided by CNNC to Pakistan. The first of twin units at the Chashma Nuclear Power Plant was completed in 1999. Construction began on the second unit at Chashma in 2005, and completion is expected in late 2011 or early 2012. The CNP-300 being built at Chashma 2 is reported to utilize lessons learned from the previous two units at Qinshan I-1 and Chashma 1, and therefore includes over 170 design changes to improve safety features and operability enhancements. The gross output has also been increased slightly to 325 MWe.

China is now looking for potential new export partners for the CNP-300. However, SNERDI is also working on a new small PWR concept, which is based on the CNP-300 but incorporates safety and technological improvements.