Radiation protection in the design of γ-ray industrial computed tomography systems

Zhou, Rifeng; Zhou, Xiaojian; Li, Xiaobin; Li, Ping

doi:10.1007/s41365-016-0077-7

Cited by 6 publications

(4 citation statements)

References 14 publications

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“…There are few publications focusing on the safety of CT scanning in industry. Zhou et al, 2016, conducted a study on the radiation protection of industrial computed tomography workstations [30]. In a large book publication, Industrial X-ray Computed Tomography, by Carmignato et al, 2018, the issue of safety and risk associated with CT scanner operation is not covered [31].…”

Section: Discussionmentioning

confidence: 99%

Radiation Protection of a 3D Computer Tomography Scanning Workplace for Logs—A Case Study

Gergeľ,

Hamza,

Ondrejka

et al. 2023

Sensors

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Despite its undeniable advantages, the operation of a CT scanner also carries risks to human health. The CT scanner is a source of ionizing radiation, which also affects people in its surroundings. The aim of this paper is to quantify the radiation exposure of workers at a 3D CT wood scanning workplace and to determine a monitoring program based on measurements of ionizing radiation levels during the operation of a CT log scanner. The workplace is located in the Biotechnology Park of the National Forestry Centre. The ionizing radiation source is located in a protective cabin as a MICROTEC 3D CT machine with an X-ray lamp as X-ray source. The CT scanner is part of the 3D CT scanning line and its function is continuous quality scanning or detection of internal defects of the examined wood. The measurement of leakage radiation during scanning is performed with a metrologically verified meter. The measured quantity is the ambient dose equivalent rate H˙*10. The results of the measurements at the selected measurement sites have shown that, after installation of additional safety barriers, the CT scanner for the logs complies with the most strict criteria in terms of radiation protection. Workers present at the workplace during the operation of the CT scanner are not exposed to radiation higher than the background radiation level.

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Section: Discussionmentioning

confidence: 99%

Radiation Protection of a 3D Computer Tomography Scanning Workplace for Logs—A Case Study

Gergeľ,

Hamza,

Ondrejka

et al. 2023

Sensors

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show abstract

“…In the field of medicine and within industry, radiation technology has been employed extensively; inescapably, radiation hazard has come to the spotlight in the world. [1][2][3][4][5] This has led to the development of light and flexible materials which will enable protection of workers alongside the environment. 6 This has opened up prospects for research into light-weight and flexible materials, as a means to prevent radiation across a number of applications for these types of materials.…”

Section: Introductionmentioning

confidence: 99%

Preparation and assessment of nanocomposites based on natural rubber latex reinforced with multiwall carbon nanotubes for Gamma rays shielding applications

Abdeldaym

Elhady

2022

Journal of Composite Materials

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Reinforcement of the flexible shielding properties of natural rubber (NRL) was achieved through various content Multi-walled carbon nanotubes (MWCNTs) prepared from a simple solution using mixing method. We reported the structure change of NRL upon addaing different contenets of MWCNTs. The results from the X-ray diffraction, Scanning electron microscopy and Fourier-transform infrared spectroscopy revealed that the nanocomposites have been successfully prepared, making them fitting to impact significant improvement on the mechanical strength of the matrix. The frequency dependence of the dielectric constant, dielectric loss and AC conductivity of the NRL/MWCNTs nanocomposites at room temperature under different nanotube loading conditions were invistgated. The radiation shielding characteristics such as the linear attenuation coefficients (l) and half-value thickness for NRL/MWCNTs nanocomposite films were presented.Thus, from the obtained results, it can be concluded that nanocomposite films offer promising radiation-shielding properties.

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“…Radiation sources have been used for many years in nuclear technology applications from medicine to nuclear energy. In nuclear technology, protection from the unnecessary radiation is essential and should be provided by some protective materials [1][2][3]. Lead is the most used material for gamma and x-ray shielding thanks to its properties such as easy and cheap production and high density [4].…”

Section: Introductionmentioning

confidence: 99%

Cs-137 Gamma Ray Attenuation Properties of Flexible Silicone Rubber Materials

Büyük¹

2019

European Journal of Science and Technology

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In this study, pure silicone rubber and iron ore concentrate added silicone rubber materials were performed against Cs-137 gamma source. Cs-137 is accepted intermediate energy level gamma source in nuclear technology because of its energy peak at 0.662 MeV. Up to 67 wt. % iron ore concentrate added into silicone rubber materials were used in the experiments. Linear attenuation curves were carried out for the studied samples against Cs-137 gamma energy. Increasing iron ore ratio in the materials caused the higher radiation shielding performance for Cs-137 gamma energy. In addition, increasing iron ore ratio decrease the total volume air bubbles in the samples. Decreasing air bubbles in the samples has contributed to gamma ray shielding. 0.5 mmPbE and 1 mmPbE Lead equivalent (PbE) values were determined for the samples. 0.5mmPbE standard has been provided by using 2.83 mm thick of 67 wt. % iron ore concentrate imbedded silicone rubber at 0.662 MeV gamma energy. In conclusion, iron ore concentrate imbedded silicone rubber materials are among the promising economic radiation shielding materials which could be alternative to lead.

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Radiation protection in the design of γ-ray industrial computed tomography systems

Cited by 6 publications

References 14 publications

Radiation Protection of a 3D Computer Tomography Scanning Workplace for Logs—A Case Study

Radiation Protection of a 3D Computer Tomography Scanning Workplace for Logs—A Case Study

Preparation and assessment of nanocomposites based on natural rubber latex reinforced with multiwall carbon nanotubes for Gamma rays shielding applications

Cs-137 Gamma Ray Attenuation Properties of Flexible Silicone Rubber Materials

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