Optimization design method of liquid state effluent measure apparatus sampling system

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...

AI Technical Summary

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

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