Report of summer holiday practical training 2020; Feasibility study on nuclear battery using HTTR core; Feasibility study for nuclear design, 3

Ishitsuka, Etsuo; Mitsui, Wataru*; Yamamoto, Yudai*; Nakagawa, Kyoichi*; Ho, H. Q.; Ishii, Toshiaki; Hamamoto, Shimpei; Nagasumi, Satoru; Takamatsu, Kuniyoshi; Kenzhina, I.*; et al.

JAEA-Technology 2021-016, 16 Pages, 2021/09

JAEA-Technology-2021-016.pdf:1.8MB

As a summer holiday practical training 2020, the feasibility study for nuclear design of a nuclear battery using HTTR core was carried out, and the downsizing of reactor core were studied by the MVP-BURN. As a result, it is clear that a 1.6 m radius reactor core, containing 54 (183 layers) fuel blocks with 20% enrichment of U, and BeO neutron reflector, could operate continuously for 30 years with thermal power of 5 MW. Number of fuel blocks of this compact core is 36% of the HTTR core. As a next step, the further downsizing of core by changing materials of the fuel block will be studied.

Development of a BWR core burn-up calculation code COREBN-BWR

; Okumura, Keisuke

JAERI-M 92-068, 107 Pages, 1992/05

JAERI-M-92-068.pdf:2.79MB

no abstracts in English

Conceptual design study of high conversion light water reactor

Okumura, Keisuke; ; Mori, Takamasa; Nakagawa, Masayuki;

JAERI-M 90-096, 169 Pages, 1990/06

JAERI-M-90-096.pdf:5.02MB

no abstracts in English

Whole-core Monte Carlo burnup calculation for RBWR by parallel computing

Miwa, Junichi*; Hino, Tetsushi*; Mitsuyasu, Takeshi*; Nagaya, Yasunobu

no journal, , 

We performed whole-core Monte Carlo calculations for core design verification of an innovative BWR concept, resource-renewable boiling water reactor (RBWR). The calculations include a coupled neutronics/thermal-hydraulics calculation with a continuous-energy Monte Carlo code MVP and an inhouse thermal-hydraulics code, and a burnup calculation with the MVP-BURN code. Such calculations for the RBWR is challenging because it requires a large memory size and a large amount of calculation time. The typical memory size required for the RBWR calculations was an order of 10 GBytes per CPU in parallel computing using a desktop PC cluster. The total calculation time for calculating the characteristics of the equilibrium core of RBWR with the whole-core Monte Carlo burnup calculation using the desktop PC cluster was about 20 days. We demonstrated that the design calculations for the RBWR were possible with such a desktop PC cluster.