lnvestigation of small and modular-sized fast reactor

; Kawasaki, Nobuchika; ; *; ; ;

JNC TN9400 2000-063, 221 Pages, 2000/06

JNC-TN9400-2000-063.pdf:8.68MB

ln this paper, feasibility of the multipurpose small fast reactor, which could be used for requirements concemed with various utilization of electricity and energy and flexibility of power supply site, is discussed on the basis of examination of literatures of various small reactors. And also, a possibility of economic improvement by learning effect of fabrication cost is discussed for the modular-sized reactor which is expected to be a base load power supply system with lower initial investment. (1) Multipurpose small reactor (a) The small reactor with 10MWe150MWe has a potential as a power source for large co-generation, a large island, a middle city, desalination and marine use. (b) Highly passive mechanism, long fuel exchange interval, and minimized maintenance activities are required for the multipurpose small reactor design. The reactor has a high potential for the long fuel exchange interval, since it is relatively easy for FR to obtain a long life core. (c) Current designs of small FRs in Japan and USA (NERI Project) are reviewed to obtain design requirements for the multipurpose small reactor. (2) Modular-sized reactor (a) ln order that modular-sized reactor could be competitive to 3200MWe twin plant (two large monolithic reactor) with 200k/kWe, the target capital cost of FOAK is estimated to be 260k/kWe for 800MWe modular, 280k/kWe for 400MWe modular and 290k/kWe for 200MWe by taking account of the learning effect. (b)As the result of the review on the current designs of modular-sized FRs in Japan and USA (S-PRISM) from the viewpoint of economic improvement, since it only be necessary to make further effort for the target capital cost of FOAK, since the modular-sized FRs requires a large amount of material for shielding, vessels and heat exchangers essentially.

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; ;

PNC TN2410 93-017, 107 Pages, 1993/05

PNC-TN2410-93-017.pdf:12.88MB

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Measures for jamming of a flexible arm fuel handling machine reducing reactor vessel diameter

Chikazawa, Yoshitaka; Aizawa, Kosuke; Kato, Atsushi; Eto, Masao*; Matsunaga, Shoko*

no journal, , 

A next generation sodium cooled reactor introduce a flexible arm fuel handling machine to reduce reactor vessel diameter. In this study, prevention of jamming at the movable parts of the fuel handling machine and recovery from jamming is investigated.