Spent fuel assembly damage detection apparatus

A damage detection and detection device technology, which is applied in the direction of detecting the appearance of fluid at the leakage point, using liquid/vacuum degree to measure the liquid tightness, etc., to avoid external leakage, avoid damage to the instrument, and realize the effect of online real-time detection

Inactive Publication Date: 2017-02-15
SUZHOU NUCLEAR POWER RES INST +3
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  • Abstract
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Problems solved by technology

If the spent fuel container is in transit, a large amount of highly radioactive gas will be produced if the spent fuel assembly is damaged. In order to ensure the safety of the fuel container operators and unloading personnel, it is necessary to detect the radioactivity of the gas in the spent fuel container before unloading the spent fuel. There is no special device for measuring this in the prior art

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  • Spent fuel assembly damage detection apparatus

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Embodiment Construction

[0017] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0018] The invention mainly establishes a closed-loop gas on-line measurement and sampling circuit, evaluates whether the spent fuel is damaged through the online measurement and sampling analysis method, and provides personnel safety assurance basis and corresponding technical support for unloading operations.

[0019] refer to figure 1 , is a structural schematic diagram of the spent fuel assembly damage detection device of the present invention.

[0020] The spent fuel assembly damage detection device of the present invention is used to monitor in real time whether the spent fuel assembly in the spent fuel transfer container 1 is damaged. The transfer container 1 is provided with an output interface 11 and a recover...

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Abstract

The invention discloses a spent fuel assembly damage detection apparatus. An employed transferring container is provided with a release interface and a recovery interface, the detection apparatus comprises a cooler, an inert gas detector and a ventilation pipeline, the ventilation pipeline is connected with the release interface and the recovery interface, the part of the ventilation pipeline, close to the release interface, is contained in the cooler, and the inert gas detector is arranged on the ventilation pipeline and located between the cooler and the recovery interface. According to the apparatus, online real-time detection can be realized, and possible leakage of radioactive gas can be avoided through recovery of the ventilation pipeline; the cooler can prevent the instrument from being damaged by high-temperature gas; when the radioactive gas is detected, the gas can be collected by employing a steel cylinder in order to analyze content and determine the number of damaged assemblies; the part of the ventilation pipeline, located in the cooler, is a coil pipe so that rapid cooling can be facilitated; and the ventilation pipeline is further additionally provided with a sampling fan so that circulation can be guaranteed.

Description

technical field [0001] The invention relates to the field of nuclear power safety, in particular to a spent fuel assembly damage detection device. Background technique [0002] After the nuclear power plant spent fuel is loaded into the transfer container tank, the spent fuel container is drained, filled with helium, waited for temperature balance, and then transferred to the place where the spent fuel is stored for unloading. If the spent fuel container is in transit, a large amount of highly radioactive gas will be produced if the spent fuel assembly is damaged. In order to ensure the safety of the fuel container operators and unloading personnel, it is necessary to detect the radioactivity of the gas in the spent fuel container before unloading the spent fuel. There is no specific device for measuring this in the prior art. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a spent fuel assembly damage detection...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/20
Inventor 秦强张文利
Owner SUZHOU NUCLEAR POWER RES INST
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