Fast Reactors and Accelerator Driven Systems Knowledge Base

Conference Article: Recent progress in conceptual design of LMFR in China

Xu Mi; Ma Dayuan; Chen Yishao (China Inst. of Atomic Energy, Beijing (China))

Abstract

The Chinese Experimental Fast Reactor (CEFR-25) with the thermal power 65MW and electric power 25MW is the first step of the FBR development in China. The aims of this project are as following: As a prototype to accumulate the experiences of design, construction and operation of a fast reactor. As an irradiation facility to develop fuels and materials with high breeding properties and burn up rate. And as a test reactor core, envisaged, to test the fast reactor core with the fuel Ac-contained. After three years preparation for the CEFR design including the development, collection and reviewing of about 50 computer codes and the decision of the main technical selections and of design boundary conditions, from 1990 to July 1992, the conceptual design of the CEFR-25 has been completed. The confirmation and some optimization of the conceptual design have been carried out from October 1992 to the end of 1993. Based on the conceptual design and related optimization, the main features and characteristics of the CEFR-25 has been given in this paper. Spent almost whole year 1994 for the input preparation the CEFR-25 technical design has been started in the early of the year 1995. The input for the technical design mainly includes: design criteria. Input parameters. Technical selections confirmed in conceptual design. Design requirements, etc., which are briefly described in this paper. For the design requirements to the CEFR-25, of the most important is that the reactor should have passive safety properties, in other words, during any credible transient incident, for instance, ULOF-ULOHS and UTOP, etc., by the negative feedback of reactivity the reactor will enter into and be keeping at safety condition without needs of any personal interference. The residual heat will be removed away by natural convection and natural circulation. Finally, the paper gives the general descriptions about the research and development status for this reactor.

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key words: actinides; breeding; burnup; china; design; irradiation; lmfbr type reactors;asia; breeder reactors; epithermal reactors; fast reactors; fbr type reactors; liquid metal cooled reactors; nuclear fuel conversion
Reference:
Conceptual designs of advanced fast reactors.Technical committee meeting, Kalpakkam (India). 3-6 Oct 1995
International Atomic Energy Agency, Vienna (Austria)
IAEA-TECDOC--907, pp:33-50