Title:
水位計測装置
Document Type and Number:
Japanese Patent JP5802550
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To provide a water level measurement device capable of measuring the level of cooling water in a nuclear reactor without being influenced by an output distribution of a reactor core even if the nuclear reactor stops.SOLUTION: A water level measurement device 10A includes a heat generating body 11 generating heat with gamma rays and installed in a nuclear reactor pressure vessel 2 to have an axis in the height direction of the nuclear reactor; a heater 12 which heats the heat generating body; a plurality of heat insulators 13 which are individually shorter than the heat generating body and installed covering an outer peripheral surface of the heat generating body; a temperature difference measurement part 15 which has a plurality of temperature difference measuring elements 14 measuring a temperature difference between a temperature measurement point T1 and a temperature measurement point T2 set for a heat insulation part surrounded by the heat insulators and an unsurrounded non-heat-insulation part respectively, the temperature measurement points being set at respectively different heights; an axial output distribution measurement part 16 which calculates an axial output distribution of the nuclear reactor on the basis of a plurality of obtained temperature differences; and a water level determination part 17 which determines the water level in the nuclear reactor on the basis of the obtained axial output distribution and the plurality of temperature differences.
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Inventors:
Makoto Takemura
Hidehiko Kuroda
Osamu Kawakami
Takada Yuka
Fujio Shiraishi
Hidehiko Kuroda
Osamu Kawakami
Takada Yuka
Fujio Shiraishi
Application Number:
JP2011288274A
Publication Date:
October 28, 2015
Filing Date:
December 28, 2011
Export Citation:
Assignee:
Toshiba Corporation
International Classes:
G21C17/035
Domestic Patent References:
| JP10039083A | ||||
| JP56037518A | ||||
| JP2000310693A | ||||
| JP2001042080A | ||||
| JP10104388A | ||||
| JP57000521A | ||||
| JP1185487A | ||||
| JP62137590A | ||||
| JP61041942A |
Attorney, Agent or Firm:
Patent business corporation Tokyo International Patent Office