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Task 6 Radioactive Waste Study

2015-5-7 11:15| View Publisher: root| View: 4676| Comments: 0

1 Scope

Many fusion power plants could be commissioned worldwide by the end of the 21st century. The ability to handle the radioactive materials stream during operation and after decommissioning, and avoiding the disposal of radioactive materials in underground repositories as the only option, is one of the strong points that could favour fusion as an alternative to fission. Geological waste disposal is becoming difficult because of the limited capacity of existing repositories, difficulty in building new ones, tighter environmental control, and radwaste burden for future generations.

Alternatively, Task 6 has been proposing an optimized strategy: avoid underground disposal as much as possible, implement at the maximum extent the recycling of activated materials within the nuclear industry, and/or the clearance and release to commercial markets if materials contain only slight traces of radioactivity. This strategy requires a major rethinking of the fusion development program with a strong supporting R&D activity. In recent years, the study and definition of an integrated approach to the management procedures for fusion active materials led to several advances related to waste management studies.

2 Progress ( 2014 )

A collaborative study on the back-end of fusion materials cycle has been carried out in recent years. It proposes an "optimized waste management strategy": avoid underground disposal as much as possible, maximize recycling of activated materials within the nuclear industry, and/or the clearance and release to commercial markets if materials contain only slight traces of radioactivity.

Main 2013/2014 Collaborative paper: Some technological problems of fusion materials management, Fusion Engineering and Design, Volume 89, Issues 9C10, October 2014, Pages 2013- 2017 Boris N. Kolbasov, Laila El-Guebaly, Vladimir I. Khripunov, Youji Someya, Kenji Tobita, Massimo Zucchetti. 

Many other collaborative papers including two or more of the parties have been published.

3 Future Plane ( 2015 )

Continuation of the collaborative study on some of the open questions pointed out in the past phases of the study, with new aspects brought in by Japan and China, is foreseen. Some of the foreseen points to address are the following:

     Detailed study of the waste decay heat and maintenance questions

     Focus on recent advances concerning fusion radioactive waste management studies.

     Further study of activation of W and its alloys in W-based fusion components

     Development of a management strategy for activated materials from complex components

     Public acceptance of clearable and recyclable materials may be a question.

     Waste Management aspects of the China Fusion Engineering Test Reactor (CFETR)

4 Experts

6 C Radioactive Waste Study

 

Canada

Open

 

China

Zhengqi CHANG

zqchang@ustc.edu.cn

Europe

Massimo Zucchetti

zucchetti@polito.it

Japan

Kenji Tobita

tobita.kenji30@jaea.go.jp

Korea

Junghoon HAN

junghoonhan@snu.ac.kr

Russia

Viktor Kapyshev

kapyshev@nikiet.ru

US

Laila El-Guebaly

elguebaly@engr.wisc.edu

 

Disclaimer:The ESEFPIA also known as the implementing Agreement on a Co-operative Programme on Environmental,Safety and Economic Aspects of Fusion Power,functions within a framework created by the International Energy Agency(IEA).Views,findings and publications of the ESEFPIA do not necessarily represent the views or policies of the IEA Secretariat or of all of its individual member countries.

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