Hybrid journal (It can contain Open Access articles) ISSN (Print) 1741-6361 - ISSN (Online) 1741-637X Published by Inderscience Publishers[439 journals]
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Authors:Abdessamad Didi, Hamid Amsil, Hamid Bounouira, Khalid Laraki, Hamid Marah, Hassane Dekhissi, Mohamed Yjjou Pages: 67 - 79 Abstract: The aim of this research was to study the spallation reaction of a cesium-137 target using a beam of protons or deuterons for the transmutation of nuclear waste, as well as to evaluate the differences in the production cross-section of the secondary spallation products, such as neutrons, protons, deuterons, pions (π<SUP align=right>+</SUP>, π<SUP align=right>−</SUP>, π<SUB align=right>0), helions, tritons, and alphas. The work presented in this paper provides the necessary scientific evidence for confidently implementing the MCNP-calculated transmutation of cesium-137 using a spallation reaction. In our research we evaluated and improvised the different physical characteristics of the fission products of the cesium-137 target during a spallation reaction. Keywords: transmutation; waste energy; spallation; cesium-137; MCNP; cross section; Monte Carlo Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 67 - 79 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132649 Issue No:Vol. 16, No. 2 (2023)
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Authors:A. Thirumalaesh, N.A. Nibarkavi, S. Joseph Winston, Joel Jose, P.D. Rathika Pages: 80 - 96 Abstract: The Prototype Fast Breeder Reactor (PFBR) is a two loop, sodium cooled, pool type reactor. The PFBR reactor core is made up of sub-assemblies holding core material in a hexagonal lattice. The Reactor Core Viewing System in Room Temperature (RCVS-RT) aids in the process of inspection of the reactor core components. It introduces a vision probe into the extracted sub-assembly slot to reach the grid plate top for inspection. This work explores fusing non-contact sensors to a vision sensor to achieve orientation recognition of the RCVS-RT since the orientation is completely lost during the deployment of camera probe. We achieve this by overlaying generated orientation information from non-contact sensors onto the vision data. We use the orientation of the RCVS-RT and the core geometry to generate a numbering scheme of the adjacent sub-assemblies. This allows for a straightforward identification of the subassemblies in the core while maintaining sterility of core components. Keywords: PFBR; RCVSRT; data fusion; orientation identification; sub-assembly numbering algorithm Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 80 - 96 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132651 Issue No:Vol. 16, No. 2 (2023)
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Authors:Sara Salih Nayif, Elham Jasim Mohammed, Abdalsattar Kareem Hashim, Ali Abid Abojassim, Hussien Abid Ali Bakir Mraity Pages: 97 - 107 Abstract: The approach of sealed can was utilised in this work to determine the amount of the radioactivity (alpha emission) of imported ceramic tiles that are used in different kinds of buildings kinds in Iraq. The resulted data showed that the radon concentration varied from 22.105 to 302.482 Bq/m³ with an average of 162.293 Bq/m³. The effective radium content ranged from 0.079 to 1.087 Bq/kg with an average value of 0.583 Bq/kg. The uranium concentration varied from 1.192 to 16.313 Bq/kg with an average value of 16.313 Bq/kg. After obtaining those results and comparing them with the global average and permissible limits recommended by international scientific agencies such as ICRP and UNSCEAR, it was found that the considered ceramic samples are safe for local use. Keywords: alpha emitters; ceramic; radiological hazards; closed-can technique Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 97 - 107 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132653 Issue No:Vol. 16, No. 2 (2023)
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Authors:Iza Shafera Hardiyanti, A. Suparmi, Andang Widi Harto Pages: 108 - 120 Abstract: Innovative Compact Molten Salt Reactor (ICMSR) is a nuclear reactor designed to utilise thorium as main fertile fuel to achieve sustainable fuel resources. ICMSR has the inherent safety required as Advanced Reactor. This reactor uses liquid fuel salt. The fuel contains NaF-ThF<SUB align=right>4-UF<SUB align=right>4 (75-19.4-5.6)% mole of fuel salt with 19.75% uranium-235 enrichment. ICMSR uses graphite as moderator, Hastelloy-N as reactor vessel and NaF-KF (50-50)% mole as intermediate coolant. Fission yields produced by ICMSR include Xe and Kr. These isotopes need to be removed from the reactor because it reduces fuel utilisation. This paper describes the effect of Xe and Kr isotopes extraction to the criticality of ICMSR. Calculation is done by using MCNP6. The results show that the extraction of Xe and Kr on ICMSR increased the criticality and produced 2.661 × 10<SUP align=right>8</SUP> Ci actinide fission products. Keywords: ICMSR fuel; thorium sustainable fuel; Xe and Kr extraction; criticality; fission yield Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 108 - 120 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132656 Issue No:Vol. 16, No. 2 (2023)
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Authors:Nur Aida, Suardi Nur, M. Faisi Ikhwali Pages: 121 - 142 Abstract: A Pb-Bi cooled ADS with uranium fuel has been designed to be operated for 20 years. This reactor can produce 10 MW-th, 25 MW-th, and 50 MW-th power output. The volume and mass distribution of the designed ADS were analysed with a two-dimensional multigroup diffusion equation for each type of reactor core. Two variations of multiplication factor (<em>K<SUB align=right>eff</em>) values of 0.95 and 0.98 have been applied for the simulation in a designed ADS to examine the volume and mass distribution of the fuel and burn-up. The designed ADS uses two points of sources with source distributions of 10<SUP align=right>12</SUP> neutrons/second. The power distribution is calculated in the radial and axial directions. The tall-type reactor core is found to be ideal compared to balance and pancake types. Furthermore, the simulation results show that the mass requirement of fuels, in this case, U-235, U-238, and Pu, is higher at the <em>K<SUB align=right>eff</em> 0.98. Keywords: ADS; core distribution; diffusion equation; burn-up; Pb-Bi; uranium; balance reactor; tall reactor core; pancake reactor; depleted uranium Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 121 - 142 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132680 Issue No:Vol. 16, No. 2 (2023)
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Authors:Rukia Jabar Dosh, Ali K. Hasan, Ali Abid Abojassim Pages: 143 - 156 Abstract: The concentrations of radon (<SUP align=right>222</SUP>Rn) in water samples of 37 districts of Al-Najaf province, Iraq collected from primary schools were measured. Also, Annual Effective Dose (AED) in children age groups (7-12 year), that used this water as drinking water was calculated. <SUP align=right>222</SUP>Rn concentrations were measured using portable detector with RAD-7 (RAD-7 H<SUB align=right>2O). The range and average of concentrations were from 0.1 Bq/L to 0.4 Bq/L and 0.12±0.08 Bq/L, respectively. Also, the range and average of annual effective dose were from 0.1 nSv/y to 0.4 nSv/y and 0.12±0.08 nSv/y, respectively. The concentrations levels for <SUP align=right>222</SUP>Rn most samples were lower than the internationally recommended standard of (0.5 Bq/L), while the results of AED in all samples were lower than of the internationally recommended standard of (0.002 mSv/y). So, it can be noted that, the children who used water as drinking water were safe according to radon concentrations risks. Keywords: radon gas; drinking water; schools; RAD-7; Najaf city Citation: International Journal of Nuclear Energy Science and Technology, Vol. 16, No. 2 (2023) pp. 143 - 156 PubDate: 2023-08-07T23:20:50-05:00 DOI: 10.1504/IJNEST.2023.132689 Issue No:Vol. 16, No. 2 (2023)
Hybrid journal (It can contain Open Access articles)
[439 journals]
