Title:
燃焼度相対分布測定方法、燃焼度相対分布測定装置、放射線信号分布測定装置及び燃焼度相対分布測定プログラム
Document Type and Number:
Japanese Patent JP4709925
Kind Code:
B2
Abstract:
An upper detector and a lower detector that face at least one side of a fuel assembly, on which neutrons are irradiated in a nuclear reactor, and detect radiation are set at a predetermined interval in an axial direction of the fuel assembly. Distributions of radiation signals are measured by the upper detector and the lower detector while the fuel assembly and the upper detector and the lower detectors are relatively moved along the axial direction of the fuel assembly. Soundness of radiation signals measured by the upper detector and the lower detector is determined in every measurement by comparing radiation signal distributions obtained by measuring the same portion in the axial direction of the fuel assembly in a multiplexed manner with the upper detector and the lower detector. Thereafter, relative burn-up is calculated by utilizing the measured radiation signals to measure a burn-up profile. According to the present invention, it is possible to measure a burn-up profile of the fuel assembly while securing reliability of a measurement result.
Inventors:
Kumano Mido Hironori
Naoki Oda
Yutaka Tokiwa
Sei Ueda
Naoki Oda
Yutaka Tokiwa
Sei Ueda
Application Number:
JP2009510836A
Publication Date:
June 29, 2011
Filing Date:
April 11, 2008
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G21C17/06
Domestic Patent References:
| JPH0192692A | 1989-04-11 | |||
| JPH02222884A | 1990-09-05 | |||
| JPH03273192A | 1991-12-04 | |||
| JPH10282288A | 1998-10-23 | |||
| JPS57163896A | 1982-10-08 | |||
| JPS61102594A | 1986-05-21 | |||
| JPH04283696A | 1992-10-08 |
Attorney, Agent or Firm:
Hisashi Hatano
Shunguchi Sekiguchi
Akio Saruwatari
Osamu Kawamura
Shunguchi Sekiguchi
Akio Saruwatari
Osamu Kawamura