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Calibration device and calibration method for radioactive gas measurement equipment

A technology of radioactive gas and measuring equipment, applied in the field of nuclear technology measurement, to achieve the effects of high precision, less equipment used, and simple calculation method

Active Publication Date: 2020-11-17
NAT INST OF METROLOGY CHINA
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] In the prior art, there is a lack of calibration devices and calibration methods that can calibrate radioactive gas measuring equipment under normal temperature and pressure conditions without using a vacuum pump

Method used

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  • Calibration device and calibration method for radioactive gas measurement equipment
  • Calibration device and calibration method for radioactive gas measurement equipment
  • Calibration device and calibration method for radioactive gas measurement equipment

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Embodiment Construction

[0025] Detailed description will be given below in conjunction with the drawings.

[0026] The present invention provides a calibration device for radioactive gas measuring equipment, which can also be referred to as a calibration device for radioactive gas measuring equipment under normal temperature and pressure.

[0027] Such as figure 1 with 2 As shown, a calibration device for radioactive gas measurement equipment of the present invention includes at least a device to be calibrated 10, a sampling device 30, and a storage device 40. The equipment to be calibrated 10, the sampling equipment 30, and the storage device 40 are connected by pipelines to form a circulation loop. The device to be calibrated 10 is a radiation detection device that uses a radioactive gas with a known activity concentration to perform detection efficiency calibration. Preferably, the circulation circuit is a sealed circuit, and no gas leakage occurs. The sampling device 30 is a sampling device storing ...

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Abstract

A calibration method of radioactive gas measurement equipment is characterized by at least comprising the following steps of: circulating first radioactive gas with known first activity concentrationin a circulation loop comprising to-be-calibrated equipment for at least one time to obtain diluted second radioactive gas, calculating third activity concentration of the to-be-calibrated equipment based on the dilution multiple of the second activity concentration of the second radioactive gas relative to the first activity concentration, and calibrating the to-be-calibrated equipment based on the third activity concentration. According to the invention, the radioactive gas measuring equipment can be calibrated at normal temperature and normal pressure, and the calibration accuracy is high.

Description

Technical field [0001] The present invention relates to the technical field of nuclear technology measurement, and relates to a calibration device and a calibration method of radioactive gas measurement equipment, in particular to a calibration device and calibration method of radioactive gas measurement equipment under normal temperature and normal pressure. Background technique [0002] Radioactive gas refers to gas with radionuclides. In the production of the atomic energy industry or the operation of nuclear facilities, with different process engineering, there are different types of exhaust gas containing radionuclides. [0003] Radioactive noble gases are released during the operation of nuclear facilities such as military nuclear power plants, reactor operations, and nuclear power plant operations. 85 Kr, 133 Xe, etc.), the emission of these inert gases is an important parameter for safe operation monitoring and can accurately reflect the operating conditions of nuclear faci...

Claims

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Application Information

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IPC IPC(8): G01T7/00
CPCG01T7/005Y02E30/30
Inventor 张明
Owner NAT INST OF METROLOGY CHINA
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