Measurement system for radioactive substance

Abstract

An embodiment of the invention provides a measurement system for a radioactive substance. The measurement system comprises a measurement chamber, an optical path system and a transmission system, wherein the measurement chamber is made of a shielding material and provides a space for measuring the radioactive substance to be measured; the optical path system is used for introducing an optical signal into the measuring chamber to form an optical signal beam so as to irradiate the radioactive substance to be measured, and leading the optical signal penetrating through the radioactive substance to be measured out of the measuring chamber for analysis; and the transmission system is arranged in the measuring chamber and is used for transporting the radioactive substance to be measured into anirradiation range of the optical signal beam. By means of the scheme, the measuring system which is higher in safety, simpler in structure and more convenient to operate can be obtained.

Description

technical field [0001] Embodiments of the present invention relate to a system for measuring by optical means, in particular a system for measuring radioactive substances by optical means. Background technique [0002] Different from ordinary spectrophotometric measurement, the measurement of radioactive substances produced in the spent fuel reprocessing process needs to provide a measurement space that can shield radioactivity to ensure the safety of experimenters. The maturity of optical fiber technology makes long-distance spectral analysis possible. The measurement system used for radioactive substances in the prior art usually sets the measurement space as a glove box structure, and the optical devices are set outside the glove box, and the optical signal is transmitted through the optical fiber. . [0003] A disadvantage of the glove box structure is that the space inside the box is usually relatively narrow, and the experimenter needs to use gloves to complete operat...

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Problems solved by technology

[0003] A disadvantage of the glove box structure is that the space inside the box is usually relatively narrow, and the experimenter needs to use gloves to complete operations such as opening the sample bottle to take a sample, putting the sample into a cuvette for measurement, and recovering the sample after the measurement. , Sampling device and other components occupy a lot of space in the box, which makes the operation very inconvenient

At the same time, although the optical devices are arranged outside the glove box, there are still a large number of structures exposed to the radioactive environment inside the glove box, which makes the service life of the measurement system shorter

[0004] Another disadvantage of the glove box structure is that although the shielding material of the box body isolates radioactive substances, the isolation effect of the glove part is weaker than that of the box body, especially when the glove box structure is applied to nuclear waste, exhaust When using high radioactive substances such as fuel, there is still a high risk of radioactive operation

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