Method of measuring and monitoring weight of UO2 pellets in single fuel rod in real time

A technology of fuel rods and pellets, applied in nuclear reactor monitoring, reactors, nuclear power generation, etc., can solve the problems of unable to monitor the fluctuation of fuel rod material consumption in time, unable to obtain the weight of pellets in time, and low degree of automation, etc., to achieve data The effects of tracing, improving the degree of weighing information, and simplifying the recording method

Active Publication Date: 2017-05-31
CHINA NORTH NUCLEAR FUEL
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  • Claims
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Problems solved by technology

This method has a low degree of automation and a low degree of informatization, and at the same time, the existing conditions cannot obtain the UO in a single fuel rod in time. 2 Pellet weight, resulting in inability to monitor fluctuations in fuel rod material consumption in time during production

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  • Method of measuring and monitoring weight of UO2 pellets in single fuel rod in real time

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Embodiment Construction

[0019] A real-time weighing and monitoring of UO in a single fuel rod according to the present invention is described below in conjunction with the accompanying drawings and specific embodiments. 2 The pellet weight method is described further.

[0020] Such as figure 1 As shown, a real-time weighing and monitoring UO in a single fuel rod according to the present invention 2 The method for pellet weight, it may further comprise the steps:

[0021] (1) After the cladding tube is welded to the lower end plug, it is sent to the weighing position. The barcode reading device automatically reads the barcode on the cladding tube and compares the welding information in the database to confirm whether the cladding tube has been welded;

[0022] (2) For step (1), it is determined that the cladding tube after welding is automatically weighed by the weighing system. After the weighing system obtains the weight value, it judges whether it is within the fluctuation limit range. If it is w...

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Abstract

The invention provides a method of measuring and monitoring weight of UO2 pellets in a single fuel rod in real time. The method comprises the following steps: (1) automatically reading, by a barcode reading device, a barcode on a cladding tube, and then comparing the barcode with welding information in a database to determine whether the cladding tube is already welded; (2) automatically weighing the determined welded cladding tube by means of a weighing system; (3) conveying the cladding tube already loaded with pellets to a weighing position again, automatically reading, by the barcode reading device, the barcode on the cladding tube, and then comparing the barcode with weighing information in the database; (4) automatically weighing the cladding tube determined as being filled with pellets by means of the weighing system; and (5) assembling a fuel assembly, inquiring about the barcodes on the cladding tubes, and automatically reading and counting up the weight of the loaded UO2 pellets. The method in the invention increases the level of informationization of fuel rod weighing, achieves data tracing in weight data storage, and can achieve immediate obtaining of the weight of UO2 pellets in a single fuel rod and real-time monitoring on consumption fluctuation of UO2 pellets during the production of the fuel rods.

Description

technical field [0001] The invention relates to the technical field of pressurized water reactor nuclear power fuel assembly production, in particular to a real-time weighing and monitoring of UO in a single fuel rod 2 Pellet weight method. Background technique [0002] Fuel rods are an important part of AFA3G fuel assemblies. In order to account for the nuclear materials used in the production of fuel assemblies, it is necessary to calculate the UO consumed by each set of fuel assemblies 2 The pellet weight is counted. At present, the batch weighing method is used for statistics, that is, after the fuel rods pass the inspection, the operator manually groups 132 fuel rods into a batch, and then 3 people use the crane hook scale to weigh the fuel rods in batches, and then use the batch Subtract the weight of fuel rods to consume the sum of the weights of other components to obtain the consumed UO 2 Pellet weight. This method has a low degree of automation and a low degree...

Claims

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Application Information

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IPC IPC(8): G21C17/06
CPCG21C17/06Y02E30/30
Inventor 李瑞锋孙俊峰底乐张风起李超邱启文丁永斌池旭娇李强
Owner CHINA NORTH NUCLEAR FUEL
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