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Journal Articles

Revised data for 2nd version of Nuclear Criticality Safety Handbook/Data Collection

Okuno, Hiroshi; Ryufuku, Susumu*; Suyama, Kenya; Nomura, Yasushi; Tonoike, Kotaro; Miyoshi, Yoshinori

JAERI-Conf 2003-019, p.116 - 121, 2003/10

This paper outlines the data prepared for the 2nd version of Data Collection of the Nuclear Criticality Safety Handbook. These data are discussed in the order of its preliminary table of contents. The nuclear characteristic parameters (k$$_{rm inf}$$, M$$^{2}$$, D) were derived, and subcriticality judgment graphs were drawn for eleven kinds of fuels which were often encountered in criticality safety evaluation of fuel cycle facilities. For calculation of criticality data, benchmark calculations using the combination of the continuous energy Monte Carlo criticality code MVP and the Japanese Evaluated Nuclear Data Library JENDL-3.2 were made. The calculation errors were evaluated for this combination. The implementation of the experimental results obtained by using NUCEF facilities into the 2nd version of the Data Collection is under discussion. Therefore, related data were just mentioned. A database is being prepared to retrieve revised data easily.

Journal Articles

Critical and subcritical mass calculations of curium-243 to -247 based on JENDL-3.2 for revision of ANSI/ANS-8.15

Okuno, Hiroshi; Kawasaki, Hiromitsu*

Journal of Nuclear Science and Technology, 39(10), p.1072 - 1085, 2002/10

 Times Cited Count:1 Percentile:10.45(Nuclear Science & Technology)

Critical and subcritical masses were calculated for a sphere of five curium isotopes from 243Cm to 247Cm, in metal and in metal-water mixtures, considering three reflector conditions: bare, with a water reflector or a stainless steel reflector. The calculation were made mainly with a combination of a continuous energy Monte Carlo neutron transport calculation code, MCNP, and the Japanese Evaluated Nuclear Data Library, JENDL-3.2. Other evaluated nuclear data files, ENDF/B-VI and JEF-2.2, were also applied to find differences in calculation results of the neutron multiplication factor originated from different nuclear data files. A large dependence on the evaluated nuclear data files was found in the calculation results.

Journal Articles

Activities for revising Nuclear Criticality Safety Handbook

Okuno, Hiroshi; Nomura, Yasushi

Proceedings of the 2001 Topical Meeting on Practical Implementation of Nuclear Criticality Safety (CD-ROM), 8 Pages, 2001/11

The nuclear criticality safety handbook of Japan was first published in 1988, which was translated into English in 1995. This paper intends to introduce the American community of nuclear criticality safety to activities for revising the Japanese handbook, putting an emphasis on practical use of code validation. They include (1) publication of "Nuclear Criticality Safety Handbook, Version 2" and its English translation, (2) publication of "A Guide Introducing Burnup Credit, Preliminary Version," and (3) preparation of "Nuclear Criticality Safety Handbook, -Data Collection-, Version 2."

Journal Articles

Preparation for the 2nd edition of nuclear criticality safety handbook

; Nomura, Yasushi

Nihon Genshiryoku Gakkai-Shi, 39(10), p.832 - 841, 1997/00

 Times Cited Count:0 Percentile:0.01(Nuclear Science & Technology)

no abstracts in English

Journal Articles

Preparations for revising the criticality safety handbook of Japan

Okuno, Hiroshi; Komuro, Yuichi; Naito, Yoshitaka

Proc. of the 91 Int. Conf. on Nuclear Criticality Safety,Vol. 1, p.III-38 - III-43, 1991/00

no abstracts in English

Journal Articles

Preparations for revising the criticality safety handbook of Japan

Okuno, Hiroshi; Komuro, Yuichi; Naito, Yoshitaka

Proc. of the CSNI Specialist Meeting on Safety and Risk Assessment in Fuel Cycle Facilities, p.103 - 109, 1991/00

no abstracts in English

JAEA Reports

A Revision of MUTUAL; A Computer code for analysing nuclear criticality safety on array system

Okuno, Hiroshi; Naito, Yoshitaka; *; *

JAERI-M 89-140, 32 Pages, 1989/10

JAERI-M-89-140.pdf:0.65MB

no abstracts in English

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