Synthesis of different (RE)BaCuO ceramics, study their structural properties, and tracking their radiation protection efficiency using Monte Carlo simulation

The operation of reloading the irradiators is considered among the tasks requiring high radiation protection monitoring, to protect the intervening manipulators, the public and the environment. Morocco is among the countries that have a cobalt irradiator, installed at the National Institute of Agricultural Research (NIAR) of Tangier, to carry out research in the field of agronomy. In the beginning, the irradiator used low doses of activity for the study of products only, for treatment of high doses. The NIAR carried out a reload to increase the activity. To perform this, a temporary pool was installed inside the irradiation room to handle the sources safely. A radiation protection study is necessary to ensure the safe operation. This operation requires a height level of exposure. To ovoid the exposer risk, it is proposed to use the Monte Carlo method thanks to its reliability in the dosimetric calculation. This article presents a radiation protection study of the Moroccan irradiator reloading operation using the GEANT4 Monte-Carlo Simulation Code.

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MONTE CARLO SIMULATION OF AGGREGATION PROCESSES STRUCTURAL PROPERTIES OF DEPOSITIONAL AGGREGATES

Chemical Engineering Communications ◽

10.1080/00986449308936146 ◽

1993 ◽

Vol 121 (1) ◽

pp. 219-234 ◽

Cited By ~ 1

Author(s):

MASSIMILIANO GIONA ◽

ORESTE PATIERNO

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Structural Properties ◽

Aggregation Processes

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Monte Carlo simulation of molecular and structural properties of mono- and bi-dispersed poly(ethylene oxide) nanofibers

Journal of Polymer Research ◽

10.1007/s10965-019-1753-1 ◽

2019 ◽

Vol 26 (6) ◽

Cited By ~ 1

Author(s):

Visit Vao-soongnern

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Ethylene Oxide ◽

Structural Properties ◽

Poly Ethylene Oxide ◽

Poly Ethylene

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Monte Carlo Simulation and Experimental Validation for Radiation Protection with Multiple Complex Source Terms and Deep Penetration for a Radioactive Liquid Waste Cementation Facility

Science and Technology of Nuclear Installations ◽

10.1155/2020/8819794 ◽

2020 ◽

Vol 2020 ◽

pp. 1-13

Author(s):

Wenqian Li ◽

Xuegang Liu ◽

Sheng Fang ◽

Xueliang Fu ◽

Kaiqiang Guo

Keyword(s):

Monte Carlo Simulation ◽

Monte Carlo ◽

Radiation Protection ◽

Experimental Measurement ◽

Variance Reduction ◽

Liquid Waste ◽

Deep Penetration ◽

Radioactive Liquid Waste ◽

Variance Reduction Techniques ◽

Reduction Techniques

A new radioactive liquid waste cementation facility was under commissioning recently in the Institute of Nuclear and New Energy Technology of Tsinghua University, which is designed to simultaneously process multiple intermediate-level radioactive waste drums. Therefore, the multiple volume sources and the scattering effect becomes a key issue in its radiation protection. For this purpose, the Monte Carlo program FLUKA code and experimental measurement were both adopted. In the FLUKA simulation, five different scenarios were considered, i.e., one drum, two drums, four drums, six drums, and eight drums. For the multiple volume sources, the source subroutine code of FLUKA was rewritten to realize the sampling. The complex shielding also leads to a deep penetration problem; hence, the optimization algorithm and variance reduction techniques were adopted. During the measurement, two scenarios, outdoor and indoor, were carried out separately representing the dose field when only one drum is considered and when the scattering effect is considered. A comparison between the experiments and calculations shows very good agreement. From both of the Monte Carlo simulation and the experimental measurement, it can be drawn that, in the horizontal direction, with the increase of the drum number, the dose rate increases very little, while in the vertical direction, the increase of the dose rate is very obvious with the increase of the drum number. The complicated source term sampling methods, the optimization algorithm and variance reduction techniques, and the experimental verification can provide valuable references for the similar scattering problem in radiation protection and shielding design.

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