Chemical reaction kinetics dataset of Cs-I-B-Mo-O-H system for evaluation of fission product chemistry under LWR severe accident conditions

Miyahara, Naoya; Miwa, Shuhei; Horiguchi, Naoki; Sato, Isamu*; Osaka, Masahiko

Journal of Nuclear Science and Technology, 56(2), p.228 - 240, 2019/02

https://doi.org/10.1080/00223131.2018.1544939

In order to improve LWR source term under severe accident conditions, the first version of a fission product (FP) chemistry database named "ECUME" was developed. The ECUME is intended to include major chemical reactions and their effective kinetic constants for representative SA sequences. It is expected that the ECUME can serve as a fundamental basis from which FP chemical models in the SA analysis codes can be elaborated. The implemented chemical reactions in the first version were those for representative gas species in Cs-I-B-Mo-O-H system. The chemical reaction kinetic constants were evaluated from either literature data or calculated values using ab-initio calculations. The sample chemical reaction calculation using the presently constructed dataset showed meaningful kinetics effects at 1000 K. Comparison of the chemical equilibrium compositions by using the dataset with those by chemical equilibrium calculations has shown rather good consistency for the representative Cs-I-B-Mo-O-H species. From these results, it was concluded that the present dataset should be useful to evaluate FP chemistry in Cs-I-B-Mo-O-H system under LWA SA conditions.

Reactor Engineering Department annual report; April 1, 1992 March 31, 1993

JAERI-M 93-181, 247 Pages, 1993/09

JAERI-M-93-181.pdf:7.72MB

no abstracts in English

Reactor Engineering Department annual report; April 1, 1990 March 31, 1991

JAERI-M 91-138, 262 Pages, 1991/09

JAERI-M-91-138.pdf:7.08MB

no abstracts in English

DELIGHT-7; One dimensional fuel cell burnup analysis code for High Temperature Gas-Cooled Reactors (HTGR)

Shindo, Ryuichi; Yamashita, Kiyonobu; Murata, Isao

JAERI-M 90-048, 225 Pages, 1990/03

JAERI-M-90-048.pdf:5.06MB

no abstracts in English

Reactor Engineering Department Annual Report; April 1,1985-March 31,1986

; ; Shinohara, Yoshikuni; ; Akino, Fujiyoshi; ; ; Ono, Akio; ;

JAERI-M 86-125, 240 Pages, 1986/08

JAERI-M-86-125.pdf:6.33MB

no abstracts in English

Reactor Engineering Department Annual Report,April 1,1984-March 31,1985

JAERI-M 85-116, 259 Pages, 1985/08

JAERI-M-85-116.pdf:6.67MB

no abstracts in English

Reactor Engineering Department Annual Report; April 1,1983-March 31,1984

Matsuura, Shojiro*

JAERI-M 84-138, 246 Pages, 1984/08

JAERI-M-84-138.pdf:7.07MB

no abstracts in English

Double heterogeneity effect of fuel pin and subassembly in a fast power reactor

Nakagawa, Masayuki; *

Nuclear Science and Engineering, 53(2), p.214 - 228, 1983/00

no abstracts in English

Benchmark Calculations by the Thermal Reactor Standard Nuclear Design Code System : SRAC

; Akino, Fujiyoshi; ;

JAERI-M 9781, 78 Pages, 1981/11

JAERI-M-9781.pdf:2.58MB

no abstracts in English

Generation of Actinide Isotopes Cross Section Set for the Fast Reactor Caluculation Using Data From ENDL and ENDF/B-IV

; ;

JAERI-M 8310, 124 Pages, 1979/06

JAERI-M-8310.pdf:3.65MB

no abstracts in English