Results 141 to 150 of about 1,440 (170)
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Calculation of dpa rate in graphite box of Tehran Research Reactor (TRR)
Nuclear Science and Techniques, 2019Radiation damage is an important factor that must be considered while designing nuclear facilities and nuclear materials. In this study, radiation damage is investigated in graphite, which is used as a neutron reflector in the Tehran Research Reactor (TRR) core. Radiation damage is shown by displacement per atom (dpa) unit.
Mohamad Amin Amirkhani +4 more
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Radioactive dispersion model for Tehran research reactor and radioisotope laboratory stacks
2010 International Conference on Environmental Engineering and Applications, 2010In this paper, the amount of released radionuclide from Tehran's research reactor and radioisotope laboratory stacks has been studied. The aim of this work is to determine the amount and type of radioactive material and to estimate their risk once they released to the environment. To perform the above two task, a computer modeling using cap-88 code and
Nahid Sadeghi +2 more
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Residual heat estimation by using Cherenkov radiation in Tehran Research Reactor
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2008Abstract An experiment is set up in Tehran 5 MW research reactor to observe Cherenkov radiation response during post-shutdown periods. An ordinary PC camera is used for this purpose. Theoretical estimation of the total power including decay heat and neutronic power is checked against detector response. A general agreement suggests that the same setup
M. Arkani, M. Gharib
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The Boron Neutron Capture Therapy Research Facility at the Tehran Research Reactor (TRR)
1996In this paper, the procedure applied to produce a neutron beam suitable for Boron Neutron Capture Therapy (BNCT) research at the Tehran Research Reactor (TRR) is discussed. In this project the reactor core of the Nuclear Research Center of the Atomic Energy Organization of Iran was used as the neutron source.
M. K. Marashi, A. Pazirandeh
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A model for the analysis of pump start-up transients in Tehran Research Reactor
Progress in Nuclear Energy, 2007During the starting up period of a centrifugal pump the rotational speed is accelerated rapidly from standstill to its final speed and then established at the rated speed. While flow rate and total dynamic pressure rise are boosted accordingly. In the point of view of a theoretical treatment, pump start-up offers difficulty because both rotational ...
FARHADI K. +2 more
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Safety requirement assessment of fuel sample test in Tehran research reactor
Progress in Nuclear Energy, 2016Abstract In the present study, neutronic and thermo-hydraulic evaluation and the feasibility study of inserting a fissile material into the Tehran research reactor core are performed. The feasibility study is carried out by calculating safety related neutronic parameters of the core, i.e., excess reactivity, shutdown margin, reactivity worth of the ...
Farrokh Khoshahval, Amin Davari
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The effect of retarding torque during a flow transient for Tehran Research Reactor
Annals of Nuclear Energy, 2011Abstract The primary cooling system of the Tehran Research Reactor (TRR) has been analysed for a possible flow transient phenomenon caused by power cut-off. All the components of the TRR primary cooling loop that offer resistance to the coolant flow are physically modelled. Differential equations of motion for the coolant in the primary piping of the
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Radiation and Environmental Biophysics, 2018
Radiological dose assessment is one of the main categories of safety assessment for nuclear reactors and facilities. The radiation risks to the public and to the environment that may arise from these facilities have to be assessed and, if necessary, controlled. The main objective of this paper is the assessment of radiation doses to residents of Tehran
R, Vali +4 more
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Radiological dose assessment is one of the main categories of safety assessment for nuclear reactors and facilities. The radiation risks to the public and to the environment that may arise from these facilities have to be assessed and, if necessary, controlled. The main objective of this paper is the assessment of radiation doses to residents of Tehran
R, Vali +4 more
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Experimental measurements of Na-24 activity in Tehran Research Reactor (TRR)
Progress in Nuclear Energy, 2010Abstract Experimental determination of coolant activity due to Na-24 produced as a result of 23 Na(n,γ) 24 Na and 27 Al(n,α) 24 Na reactions has been done for TRR. Activity of various water samples from the reactor pool was measured. Relative Source Strength Measurement (RSSM) technique was employed to measure Na-24 activity.
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Production assessment of 195mPt in Tehran research reactor
Journal of Radioanalytical and Nuclear Chemistry, 2023Sara Vosoughi +5 more
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