Characterization of radioactive aerosols in Tehran research reactor containment [PDF]
Nuclear Technology and Radiation Protection, 2015 The objectives of this research were to determine the levels of radioactivity in the Tehran research reactor containment and to investigate the mass-size distribution, composition, and concentration of radionuclides during operation of the ...
Moradi Gholamreza +5 more
doaj +2 more sources
A pragmatic approach towards designing a second shutdown system for Tehran research reactor [PDF]
Nuclear Technology and Radiation Protection, 2016 One second shutdown system is proposed for the Tehran Research Reactor to achieve the goal of higher safety in compliance with current operational requirements and regulations and improve the overall reliability of the reactor shutdown system ...
Boustani Ehsan +2 more
doaj +3 more sources
Experimental and numerical transient analysis of Tehran Research Reactor (TRR) [PDF]
مجله علوم و فنون هستهای, 2016 In this paper, a numerical model is presented to analyze a series of reactivity insertion and loss of flow transients in TRR. The model predictions are compared with the experimental data and PARET code results.
Ahmad Lashkari +6 more
doaj +1 more source
Safety Enhancement of Tehran Research Reactor with a Second Shutdown System [PDF]
مجله علوم و فنون هستهای, 2017 Safety and related categories are of importance in all fields of nuclear industry, especially as regards the nuclear reactors. One of the most important safety aspects in the nuclear reactors is the shutdown system, each reactor requiring at least one ...
E Boustani, S Khakshournia, E Abedi
doaj +1 more source
Flow Blockage Accident Analysis of Tehran Research Reactor Fuel Assembly [PDF]
مجله علوم و فنون هستهای, 2011 Tehran Research Reactor (T.R.R.) is a pool-type, 5 MW thermal research reactor. One probable event is that if some external objects or debris fall down into the reactor core and cause obstruction of the coolant flow through one of the fuel assemblies ...
J. Jafari, S Khakshournia
doaj +1 more source
Control rods effect analyses on thermo-hydraulic safety parameters in TRR [PDF]
مجله علوم و فنون هستهای, 2020 In this study, the effect of control rods on TRR safety parameters was investigated in both cases of static and transient behavior. In this paper, the effect of the control rods movements (70%) on the power peaking was used in the form of the normalized ...
A. Lashkari +2 more
doaj +1 more source
Experimental study of structural, mechanical, and nuclear properties of neutron absorber composites containing boron [PDF]
مجله علوم و فنون هستهای, 2022 The present study investigated the structural, mechanical, and nuclear properties of two types of polymeric and metallic composites containing boron carbide particles.
M.J. Nasr Isfani +2 more
doaj +1 more source
Thermal hydraulic analysis and estimation of hydrogen generation in severe accidents in WWER1000 [PDF]
مجله علوم و فنون هستهای, 2022 Severe Accidents Management (SAM) in nuclear power plants is an important safety issue. SAMs require assessing the thermal-hydraulic conditions of the nuclear reactor during the accident.
R. Gharari +4 more
doaj +1 more source
Evaluation of fast fission factor in a typical pool type research reactor [PDF]
Journal of Nuclear Research and Applications, 2022 One of the important factors of a nuclear reactor core is the fast fission factor. This paper calculates this parameter based on space and energy-dependent method using the PTRAC card of MCNPX code. Tehran research reactor (TRR) is taken as a case study,
M. Arkani, S. Khakshournia
doaj +1 more source
Effect of nano-particle coating techniques of SiO2 on improvement of Critical Heat Flux [PDF]
مجله علوم و فنون هستهای, 2020 In this study, two methods of nano-particle coating, by boiling and electrophoretic, have been used to investigate the effect of surface modification on the Critical Heat Flux of stainless steel plates.
A. Rahimian +4 more
doaj +1 more source