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Optimization design method of liquid state effluent measure apparatus sampling system

A technology of sampling system and measuring device, which is applied in the direction of sampling device, etc., can solve the problems of large material consumption, complex design of water monitor, and difficult test, so as to ensure detection efficiency, save system research and development time, and improve Monitor performance effects

Active Publication Date: 2014-06-18
CHINA INST FOR RADIATION PROTECTION
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Problems solved by technology

This design method is difficult to test, consumes a lot of materials (especially radioactive materials), and also brings more radiation test risks, so there are few similar work introductions at home and abroad.
[0006] In fact, the design of water monitors is quite complicated. Firstly, what kind of structure is suitable; secondly, what is the size; thirdly, how is the ability to resist external interference; in addition, the cost of the above factors and how to balance and decontaminate, etc. need to be considered question

Method used

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  • Optimization design method of liquid state effluent measure apparatus sampling system
  • Optimization design method of liquid state effluent measure apparatus sampling system
  • Optimization design method of liquid state effluent measure apparatus sampling system

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Embodiment Construction

[0032] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0033] In the present invention, the description is only a preferred implementation process, and the Monte Carlo method can be used for simulation according to the flow sequence in the description, but other changes in the flow sequence also fall within the protection scope of the present invention.

[0034] figure 1 It is a structural schematic diagram of an optimized liquid effluent monitoring sampling system simulated according to the method of the present invention. The sampling system includes a sampling chamber, a shielding layer 4 arranged around the sampling chamber and a detector system 3 used in conjunction with the sampling chamber , the detector sensitive body 2 on the detector system 3 protrudes into the sampling chamber, and the sampling chamber is used to contain a certain amount of liquid effluent 1 taken as the monitoring objec...

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Abstract

The invention relates to an optimization design method of a liquid state effluent measure apparatus sampling system, which comprises the optimization of a detector system used by matching with a sampling chamber in the sampling system; optimization of the thickness of a shielding layer at the peripheral part of the sampling chamber; and optimization of volume and dimension of the sampling chamber. The method comprises the following steps: for a simulated source item containing nuclide to be measured, preferably selecting a detector with 1-5 inches and performing preliminary simulation by different sizes, analyzing detection and electronic performance of the detector, and analyzing the relation of sampling chamber volume and the detection system counting rate; by aiming at the selected area to take regard of extraneous interference factor, performing background radiation shield simulation to determine an appropriate shielding layer thickness; measuring the counting rate relation of economic cost and detection system; and determining the optimized liquid state effluent monitoring sampling system. According to the method, excellent monitoring performance of the monitoring sampling system is obtained, and the system research and open time can be simultaneously and effectively saved, design cost is saved, and the radiation risk is minimized.

Description

technical field [0001] The invention belongs to the technical field of optimization design of radiation protection monitoring devices, and in particular relates to an optimization design method of a sampling system of a liquid effluent measurement device. Background technique [0002] There are liquid radioactive substances in nuclear facilities during the entire cycle of construction, operation, and decommissioning. Among these substances, those that are no longer used are discharged to the environment through discharge pipelines. Monitoring must be carried out before discharge to ensure that the discharge meets the requirements of regulations and standards. got optimized. The usually effective real-time method is to set up online liquid effluent monitors. Although the performance of these monitors is difficult to compare with laboratory analytical instruments, their advantages of convenient sampling and real-time measurement are unmatched by laboratory analytical instrumen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/10
Inventor 沈福傅翠明马英豪席萍萍张志龙李静韬卢正永
Owner CHINA INST FOR RADIATION PROTECTION
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