Barreled nuclear waste TGS detection device and method based on arc array scintillation detector
An array detector and nuclear waste technology, which is applied to measurement devices, instruments, scientific instruments, etc., can solve the problems of time-consuming and heavy workload of nuclear waste barrel scanning and measurement, and achieve to improve the speed of tomographic gamma scanning and reduce workload. , the effect of improving the detection speed and accuracy
Active Publication Date: 2019-10-22
SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING
View PDF7 Cites 5 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
At present, the barreled nuclear waste tomography gamma scanning detection system uses a single high-purity germanium (HPGe) detector. Even if the image resolution is not high, there are many positions for scanning and measurement. Scanning measurements are time consuming
On the other hand, the detection efficiency must be calibrated for each voxel and each scanning measurement position, which requires a lot of work
Method used
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment
[0132] The nuclear waste barrel is divided into N layers, and the transmission source and the detector are horizontally aligned with the first layer through the mechanical control of the transmission source lifting device (1) and the array detector lifting device (3).
[0133] Step 1: When there is no barrel, turn on the transmission source to obtain the transmission peak area of each peak of the transmission source 152Eu;
[0134] Step 1: The spectrum is smooth;
[0135] Step 2: Peak search;
[0136] Step 3: Calculate the peak area;
[0137] Step 4: The program identifies characteristic peaks;
[0138] The required peak energy is: 152 Eu = [121.78; 244.70; 344.28; 443.97; 778.90; 867.37; 964.08; 1112.10; 1408.0] keV;
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More PUM
| Property | Measurement | Unit |
|---|---|---|
| Depth | aaaaa | aaaaa |
| Thickness | aaaaa | aaaaa |
| The inside diameter of | aaaaa | aaaaa |
Login to View More
Abstract
The invention discloses a barreled nuclear waste tomographic gamma scanning (TGS) detection device and method based on an arc array scintillation detector to improve the TGS detection speed and accuracy and reducing the workload. The TGS detection device comprises a transmission source lifting device, a nuclear waste barrel rotating platform, and an array detector lifting device. The detection method comprises the steps of S1, when no barrel is provided, turning on a transmission source and obtaining the transmission peak area of each peak of the transmission source; S2, installing a nuclear waste barrel, turning on the transmission source, and obtaining the transmission peak area of each peak of the transmission source; S3, turning off the transmission source, performing emission measurement, and obtaining the radiation in the barrel; S4, correcting an attenuation coefficient and calculating activity; and S5, repeating the steps to measure the next level until the highest level is measured. The barreled nuclear waste TGS detection device and method based on the arc array scintillation detector can shorten the measurement time, improve the TGS detection speed and accuracy, and improve the work efficiency.
Description
Technical field [0001] The invention relates to the measurement and analysis of nuclear waste in barrels, in particular to a sector-shaped array detector tomography gamma scanning nuclear waste barrel detection device and a detection method thereof. Background technique [0002] As we all know: the radioactivity detection of barreled nuclear waste is an indispensable link in the recovery, treatment and disposal of nuclear waste. Tomographic gamma scanning (Tomographic Gamma Scanning, TGS) non-destructive testing technology (Non-Destructive Assay, NDA) is currently the most advanced, most effective, and most economical method for radioactivity detection of low- and medium-level nuclear waste. This technology combines the two major technical principles of medical transmission CT and SPECT, which can accurately qualitatively and quantitatively detect the non-uniform distribution of radionuclides in barrels of nuclear waste, and can provide an intuitive image of the radioactivity dis...
Claims
the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More Application Information
Patent Timeline
Login to View More IPC IPC(8): G01T1/167G01T1/29
CPCG01T1/167G01T1/2985G01T1/2964
Inventor 石睿庹先国张贵宇韩强陆景王琦标邓超荣文钲
Owner SICHUAN UNIVERSITY OF SCIENCE AND ENGINEERING