Feasibility study for Tehran Research Reactor power upgrading

2008 ◽  
Vol 35 (7) ◽  
pp. 1177-1184 ◽  
Author(s):  
Kazem Farhadi ◽  
Samad Khakshournia
Keyword(s):  
Feasibility Study ◽  
Research Reactor ◽  
Reactor Power ◽  
Tehran Research Reactor

scholarly journals Design and installation of a hot water layer system at the Tehran research reactor

2013 ◽  
Vol 28 (1) ◽  
pp. 18-24
Author(s):  
Sayedeh Mirmohammadi ◽  
Morteza Gharib ◽  
Parnian Ebrahimzadeh ◽  
Reza Amrollahi
Keyword(s):  
Research Reactor ◽  
Cooling Water ◽  
Fission Products ◽  
Water Layer ◽  
Partial Solution ◽  
Time Frame ◽  
Reactor Power ◽  
Hot Water ◽  
Layer System ◽  
Tehran Research Reactor

A hot water layer system (HWLS) is a novel system for reducing radioactivity under research reactor containment. This system is particularly useful in pool-type research reactors or other light water reactors with an open pool surface. The main purpose of a HWLS is to provide more protection for operators and reactor personnel against undesired doses due to the radio- activity of the primary loop. This radioactivity originates mainly from the induced radioactivity contained within the cooling water or probable minute leaks of fuel elements. More importantly, the bothersome radioactivity is progressively proportional to reactor power and, thus, the HWLS is a partial solution for mitigating such problems when power upgrading is planned. Following a series of tests and checks for different parameters, a HWLS has been built and put into operation at the Tehran research reactor in 2009. It underwent a series of comprehensive tests for a period of 6 months. Within this time-frame, it was realized that the HWLS could provide a better protection for reactor personnel against prevailing radiation under containment. The system is especially suitable in cases of abnormality, e. g. the spread of fission products due to fuel failure, because it prevents the mixing of pollutants developed deep in the pool with the upper layer and thus mitigates widespread leakage of radioactivity.

A feasibility study of the Tehran research reactor as a neutron source for BNCT

2014 ◽  
Vol 90 ◽  
pp. 132-137 ◽  
Author(s):  
Yaser Kasesaz ◽  
Hossein Khalafi ◽  
Faezeh Rahmani ◽  
Arsalan Ezati ◽  
Mehdi Keyvani ◽  
...  
Keyword(s):  
Neutron Source ◽  
Feasibility Study ◽  
Research Reactor ◽  
Tehran Research Reactor

Determination of Tehran Research Reactor power by 16N gamma detection

2011 ◽  
Vol 38 (12) ◽  
pp. 2667-2672 ◽  
Author(s):  
Hamid Reza Armozd ◽  
Morteza Gharib ◽  
Hossein Afarideh ◽  
Mitra Ghergherehchi ◽  
Azim Ahmadi Niar ◽  
...  
Keyword(s):  
Research Reactor ◽  
Reactor Power ◽  
Tehran Research Reactor ◽  
Gamma Detection

Calculation and Measurement of Kinetics Parameters of Tehran Research Reactor

2009 ◽  
Author(s):  
Seyed Abolfazl Hosseini ◽  
Naser Vosoughi ◽  
Mortaza Gharib ◽  
Mohammad Bagher Ghofrani
Keyword(s):  
Research Reactor ◽  
Reactor Power ◽  
Coolant Temperature ◽  
Neutron Generation ◽  
Reactor Physics ◽  
Kinetics Parameters ◽  
Second Stage ◽  
Cold State ◽  
Tehran Research Reactor ◽  
Relative Errors

Effective delayed neutron fraction βeff and neutron generation time Λ are important factors in reactor physics calculation and transient analysis. In first stage of this research, these kinetics parameters have been calculated for two states of Tehran research reactor (TRR), i.e. cold (fuel, clad and coolant temperature 20°C) and hot (fuel, clad and coolant temperature 65, 49 and 44°C, respectively) using MTR_PC code. In second stage, these parameters have been measured with experimental method based on Inhour equation. For cold state, calculated βeff and Λ by MTR_PC are 0.008315 and 30.190 μsec, respectively. Same parameters in hot state are 0.008303 and 33.828 μsec, respectively. The measured βeff and Λ for cold state (reactor power is range of 100–200 Watt) are 0.008088 and 32.001 μsec, respectively. The calculated and measured values are in good agreement. Relative errors are % 2.8 for βeff and % 5.6 for Λ which are smaller than the other reported results.

Inspection of domestic nuclear fuel rods using neutron radiography at the Tehran Research Reactor

2016 ◽  
Vol 58 (9) ◽  
pp. 763-766 ◽  
Author(s):  
Mohammad Hosein Choopan Dastjerdi ◽  
Hossein Khalafi ◽  
Yaser Kasesaz ◽  
Amir Movafeghi
Keyword(s):  
Nuclear Fuel ◽  
Research Reactor ◽  
Neutron Radiography ◽  
Fuel Rods ◽  
Tehran Research Reactor ◽  
Nuclear Fuel Rods

USA–Iran, 2009–2010

2018 ◽  
Author(s):  
Nicholas J. Wheeler
Keyword(s):  
Nuclear Fuel ◽  
Research Reactor ◽  
Interpersonal Trust ◽  
Obama Administration ◽  
Face To Face ◽  
Tehran Research Reactor

This chapter examines the attempts by the first Obama Administration to reach out to Iran in an effort to build trust. It traces the failure of Obama’s diplomatic efforts to secure any reciprocation from Iranian leaders. The lack of reciprocation shows the problem of accurate signal interpretation when there is no trust. It focuses on the negotiations in 2009–10 over limiting Iran’s supply of nuclear fuel in return for refuelling the Tehran Research Reactor. The chapter argues these negotiations failed because of the lack of trust. What makes this case so important is that there was no face-to-face interaction, which this book argues is critical to the development of interpersonal trust and accurate signal interpretation.

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