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Scanning visualization device used for finding gamma source item hotspot in space

A source term and hot spot technology, applied in the field of ionizing radiation and gamma ray detection, can solve the problems of people's life and property safety threats, increase social unrest, loss of radioactive sources, etc., to facilitate use and search, avoid connection Inconvenient, small weight effect

Pending Publication Date: 2019-07-16
CHINA INST FOR RADIATION PROTECTION
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to ineffective supervision, radioactive sources have been lost many times, posing a serious threat to the safety of people's lives and property and increasing social instability.

Method used

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  • Scanning visualization device used for finding gamma source item hotspot in space
  • Scanning visualization device used for finding gamma source item hotspot in space
  • Scanning visualization device used for finding gamma source item hotspot in space

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Embodiment Construction

[0022] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0023] This solution is aimed at the shortcomings of the existing detection methods for gamma-ray source items, such as long time-consuming, high exposure dose, and limited coverage area, and proposes a scanning visualization device for finding hot spots of gamma-ray source items in space , the scanning visualization device can identify the gamma source term hotspots in the surrounding environment on the premise of ensuring the safety of the staff, so as to prevent the staff from being exposed to gamma rays.

[0024] See attached Figures 1 to 3 As shown, the scanning and visualization device for finding hot spots of gamma source items in space in this embodiment includes a pan-tilt base 1 that can rotate in four π directions, a motor turntable 2 in the vertical direction, a stepping motor 4 in the vertical direction, a laser measurin...

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Abstract

The invention discloses a scanning visualization device used for finding a gamma source item hotspot in space. The scanning visualization device comprises a 4Pi direction rotating pan tilt base, a vertical direction motor rotary table, a vertical direction stepping motor, a laser range finder, a panoramic camera, a fixed stand, a lead collimator, a horizontal rotation stand, a horizontal directionmotor, a horizontal direction motor rotary table, a vertical rotation stand and a micro gamma ray detector. The scanning visualization device used for finding the gamma source item hotspot in space in the scheme is small in size and small in weight and has a portable function, a conductive slip ring is utilized for connecting a laser ranging signal and a probe signal to a control cabinet, inconvenience in connection of a control wire is avoided, a scanning view field range is increased, measured information is complete, and a measuring result can accurately show distribution situation of source item hotspots in spatial position, numerical values of dosage rates at corresponding positions and related radionuclide situations on one image.

Description

technical field [0001] The invention relates to the technical field of ionizing radiation and gamma ray detection, in particular to a scanning visualization device for finding hot spots of gamma source items in space. Background technique [0002] Most of the exposure doses of nuclear power plant workers are during the outage period of the unit, and the gamma rays mainly come from the hot spots of the source terms at certain positions of the intricate pipelines in different rooms. The current search for these hot spots is mainly through radiation protection personnel holding gamma dose rate meters to patrol in various rooms. The main disadvantages of this method are that it takes a long time, the exposure dose is high, and it cannot be measured for some high-level pipelines. Its coverage is limited and it is easy to miss. Currently, gamma cameras can be used to find complex source hotspots, but they are easily affected by surrounding hotspots, resulting in misjudgment and e...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01T1/02G01T1/16G01T7/00
CPCG01T1/02G01T1/16G01T7/00
Inventor 刘立业夏三强曹勤剑王晓龙赵原金成赫肖运实赵日汪屿李晓敦熊万春潘红娟卫晓峰刘一聪
Owner CHINA INST FOR RADIATION PROTECTION
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