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  A huge tsunami following the catastrophic earthquake of magnitude 9.0 occurred at 2.46 pm on Mar 11, 2011 swept out the northeastern Pacific coast of Japan, causing severe damage to the Fukushima Daiichi Nuclear Power Plant (NPP). The reactors were, though robust seismically, vulnerable to the tsunami attack. The event with 15 meter tsunami disabled the power supply and cooling system and led to the emission of radioactive materials from the NPP to the atmosphere and the discharge of contaminated runoff to coastal sea. The accident was rated 7 on the NIES scale.     


  In the wake of the radiation leak accident of the Fukushima Daiichi NPP, China, Korea and Japan agreed to enhance the nuclear safety and disaster management at a summit meeting held in Tokyo, May 22 2011, issuing as part of the joint statement that three countries will work toward building a comprehensive framework in which their experts can work more closely together and mutually access useful information. CKJORC timely initiated around October 2011 the China-Korea cooperative research project titled China-Korea Cooperation on the Development of Ocean Monitoring and Prediction System of Radionuclides for nuclear safety with funding from SOA, China and MLTM, Korea.


  Countries in NW Pacific regions are one of the largest consumers of nuclear energy with a total population of more than 1.4 billion. China, Korea and other some Asian countries have plans to consider more nuclear power deployments in their long-term energy supply plans. A world-leading advanced system to respond to the possible radionuclides accidents in NW Pacific regions is expected to be cooperatively developed through the 3 year project from Dec 2011 to Dec 2014.