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JAEA Reports

Effective multiplication factor measurement by Feynman-$alpha method (3)

Mori, Tomoaki;

PNC-TN9410 98-056, 72 Pages, 1998/06

PNC-TN9410-98-056.pdf:1.98MB

The sub-criticality monitoring system has been developed for criticality safety control in nuclear fuel handling plants. In the past experiments performed with the Deuterium Critical Assembly(DCA), it was confirmed that the detection of sub-criticality was possible to k$$_{eff}$$=0.3. To investigate the applicability of the method to more generalized system, experiments were performed in the light-water-moderated system of the modified DCA core. From these experiments, it was confirmed that the prompt decay constant($$alpha$$), which was a index of the sub-criticality, was detected between k$$_{eff}$$=0.623 and k$$_{eff}$$ 0.870 and the difference of 0.05$$sim$$0.1$$Delta$$k could be distinguished. The $$alpha$$ values were numerically calculated with 2D transport code TWODANT and monte carlo code KENO V.a, and the results were compared with the measured values. The differences between calculated and measured values were proved to be less than 13%, which was sufficient accuracy in the sub-criticality monitoring system. It was confirmed that Feynman-$$alpha$$ method was applicable to sub-critical measurement of the light-water-moderated system.

Journal Articles

Numerical validation of a modified neutron source multiplication method using a calculated eigenvalue

Yamamoto, Toshihiro; Sakurai, Kiyoshi; *

Annals of Nuclear Energy, 25(9), p.599 - 607, 1998/00

 Times Cited Count:1 Percentile:83.33

no abstracts in English

JAEA Reports

Estimation of subcriticality with the computed values, II

Sakurai, Kiyoshi; Arakawa, Takuya*; Naito, Yoshitaka

JAERI-Research 96-008, 77 Pages, 1996/02

JAERI-Research-96-008.pdf:1.66MB

no abstracts in English

JAEA Reports

Estimation of subcriticality by neutron source multiplication method

Sakurai, Kiyoshi; Suzaki, Takenori; Arakawa, Takuya*; Naito, Yoshitaka

JAERI-Research 95-022, 50 Pages, 1995/03

JAERI-Research-95-022.pdf:1.28MB

no abstracts in English

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