Results 21 to 30 of about 1,391 (172)

Design of irradiation box of topaz stones and its neutronic and thermal analysis in Tehran Research Reactor [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
This paper aims to design a suitable irradiation box of topaz stones and improve the neutronic parameters by maintaining the necessary conditions for their cooling in Tehran Research Reactor (TRR).
Z. Zarei   +3 more
doaj   +1 more source

Assessment of Horizontal Steam Separator Two Phase Flow arameters and Performance in NPPs with Utilization of Computational Fluid Dynamic [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2022
In this research, utilization of typical moisture separation process in conventional steam cycle power plants, for NPPs are recommended; and by applying CFD, two-phase flow of this process is simulated.
A.H. Vosoughi, R. Saberi, K. Sepanloo
doaj   +1 more source

Investigation of 99Mo potential production via UO2SO4 liquid target irradiation in a 5 MW nuclear research reactor

open access: yesNukleonika, 2017
The activation method for 99Mo production in comparison to fissionable target irradiation in research reactors is less preferable. Therefore, 99Mo yield using UO2SO4 samples was theoretically investigated.
Gholamzadeh Zohreh   +4 more
doaj   +1 more source

Chronic exposure effect study on Ramsar high background natural radiation areas (HBNRAs) residents using micronucleus assay [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2023
The effect of chronic exposure on Ramsar HBNRAs inhabitants' health was studied using Cytokinesis Blocked Micronucleus (CBMN) Assay. The results showed a significant difference (P
F. Abbasi Siar   +3 more
doaj   +1 more source

Computational investigation of 99Mo, 89Sr, and 131I production rates in a subcritical UO2(NO3)2 aqueous solution reactor driven by a 30-MeV proton accelerator

open access: yesNuclear Engineering and Technology, 2015
The use of subcritical aqueous homogenous reactors driven by accelerators presents an attractive alternative for producing 99Mo. In this method, the medical isotope production system itself is used to extract 99Mo or other radioisotopes so that there is ...
Z. Gholamzadeh   +4 more
doaj   +1 more source

Feasibility study of Promethium-147 production as an industrial radionuclide through neutron irradiation of neodymium in Tehran Research Reactor (TRR) [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
Promethium is one of the rare earth elements of Lanthanides. This element is no found on the earth’s crust. All  its isotopes are radioactive. The isotope 147Pm is a pure beta emitter and very useful in industry because of its radioactive specifications.
S.E. Hoseini   +4 more
doaj   +1 more source

Evaluation of the radiation damage effect on mechanical properties in Tehran research reactor (TRR) clad

open access: yesNuclear Engineering and Technology, 2020
Radiation damage is one of the aging important causes in nuclear reactors. Radiation damage causes changes in material properties. In this study, this effect has been evaluated and analyzed on the clad of the Tehran research reactor (TRR).
Mohamad Amin Amirkhani   +1 more
doaj   +1 more source

Simulation of Containment Pressurization in a Large Break-Loss of Coolant Accident Using Single-Cell and Multicell Models and CONTAIN Code

open access: yesNuclear Engineering and Technology, 2016
Since the inception of nuclear power as a commercial energy source, safety has been recognized as a prime consideration in the design, construction, operation, maintenance, and decommissioning of nuclear power plants.
Omid Noori-Kalkhoran   +2 more
doaj   +1 more source

Investigation of production of main products and impurities in irradiation process of natural rhenium in Tehran reactor and comparison with simulation method by MCNPX [PDF]

open access: yesمجله علوم و فنون هسته‌ای, 2020
Considering the radioactivity of radiopharmaceuticals compounds, there are strict rules and regulations regarding their quality control aspects.
H. Ranjbar, Z. Pourhabib, E. Boustani
doaj   +1 more source

Determination of the neutron and gamma ray dose rates of the irradiating beam tubes of a pool-type research reactor by using Monte Carlo simulation and experimental detectors regarding radiation protection issues

open access: yesInternational Journal of Advanced Nuclear Reactor Design and Technology, 2021
In this paper, the reactor core, irradiating beam tubes, and radiological shields of a 5 MW open pool type Material Testing Reactor (MTR) are simulated in detail by using the MCNPX 2.6 code and its default library (i.e. mostly made of ENDF/B VI and VII).
Afshin Hedayat   +2 more
doaj   +1 more source

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