Investigation of safety aspects during steady state operation of Tehran research reactor fuel test loop

2021 ◽  
Vol 140 ◽  
pp. 103895
Author(s):  
S. Safaei Arshi ◽  
M. Amin Mozafari ◽  
A. Jozvaziri ◽  
S.M. Mirvakili
Keyword(s):  
Steady State ◽  
Research Reactor ◽  
Reactor Fuel ◽  
Safety Aspects ◽  
Steady State Operation ◽  
Test Loop ◽  
Tehran Research Reactor

scholarly journals Releasable activity and maximum permissible leakage rate within a transport cask of Tehran Research Reactor fuel samples

2015 ◽  
Vol 30 (3) ◽  
pp. 232-237
Author(s):  
Mahdi Rezaeian ◽  
Jamshid Kamali ◽  
Manoochehr Roshanzamir ◽  
Alireza Moosakhani ◽  
Elghar Noori
Keyword(s):  
Research Reactor ◽  
Leakage Rate ◽  
Reactor Fuel ◽  
Tehran Research Reactor

scholarly journals Simulation of a TRIGA Reactor Core Blockage Using RELAP5 Code

2015 ◽  
Vol 2015 ◽  
pp. 1-10 ◽  
Author(s):  
Patrícia A. L. Reis ◽  
Antonella L. Costa ◽  
Claubia Pereira ◽  
Maria Auxiliadora F. Veloso ◽  
Amir Z. Mesquita
Keyword(s):  
Steady State ◽  
Research Reactor ◽  
Reactor Core ◽  
Hydraulic Parameters ◽  
The Core ◽  
Steady State Operation ◽  
Transient Simulations ◽  
Abnormal Operation ◽  
Flow Blockage ◽  
Relap5 Code

Cases of core coolant flow blockage transient have been simulated and analysed for the TRIGA IPR-R1 research reactor using the RELAP5-MOD3.3 code. The transients are related to partial and to total obstruction of the core coolant channels. The reactor behaviour after the loss of flow was analysed as well as the changes in the coolant and fuel temperatures. The behaviour of the thermal hydraulic parameters from the transient simulations was analysed. For a partial blockage, it was observed that the reactor reaches a new steady state operation with new values for the thermal hydraulic parameters. The total core blockage brings the reactor to an abnormal operation causing increase in core temperature.

Thermo-Hydraulic Calculation and Safety Analysis of the Tehran Research Reactor

2009 ◽  
Author(s):  
J. Jafari ◽  
M. K. Firuzjaee ◽  
S. Khakshournia ◽  
K. Sepanloo ◽  
F. D’Auria
Keyword(s):  
Steady State ◽  
Research Reactor ◽  
Nucleate Boiling ◽  
Operating Conditions ◽  
Coolant Flow ◽  
Severe Accident ◽  
Hydraulic Calculation ◽  
Pump Failure ◽  
Tehran Research Reactor ◽  
Safety Parameters

The aim of this study is to evaluate the thermal hydraulic parameters such as, Minimum DNBR, fuel, clad and coolant temperatures of the Tehran Research Reactor (TRR) core in order to assure that the thermal limitations are not exceeded at full power and steady-state and the loss-of-flow accident (LOFA) operating conditions and the existing design is adequate to assure that the consequences from this anticipated occurrence does not lead to a severe accident. The PARET and TRANS computer codes were used to analysis thermal-hydraulic and safety parameters under study steady-state conditions. Furthermore the LOFA as a consequence of two type of transients are analyzed; one related to main cooling pump failure accident (slow LOFA), and the other related to accidentally opening the flapper valve whereas the main cooling pump is in working (fast LOFA). The steady-state analysis involves the determination of the departure from nucleate boiling ratio (DNBR), the temperatures profile, heat flux across the hottest channel and etc. The LOFA analysis involves the power and coolant flow rate, the fuel centerline, clad surface and coolant outlet temperatures, and the occurring of coolant flow reversal.

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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