scholarly journals Verification of a real-time interactive transient simulator for Dalat Nuclear Research Reactor

2021 ◽  
Vol 10 (4) ◽  
pp. 08-15
Author(s):  
Cao Thanh Long ◽  
Truong Hoang Tuan ◽  
Huynh Dong Phuong ◽  
Nguyen Hoang Nhat Khang ◽  
Ho Manh Dung
Keyword(s):  
Numerical Model ◽  
Real Time ◽  
Research Reactor ◽  
Nuclear Research ◽  
Safety Analysis ◽  
Human Machine Interface ◽  
Control Module ◽  
Best Estimate ◽  
Nuclear Research Reactor ◽  
Machine Interface

A PC-based real-time interactive transient simulator of Dalat Nuclear Research Reactor (DNRR), namely DalatSim, based on the best-estimate thermal-hydraulic code RELAP5/MOD3.3 has been currently building at Center for Nuclear Technologies (CNT). This paper presents the study on developing the physics core, control module, and human-machine interface (HMI) of DalatSim. The nodalization of DNRR used for DalatSim was based on the reported numerical model in the Safety Analysis Report (SAR) in 2012. DalatSim can simulate operational procedures and several hypothetical transient accidents of DNRR. A curve of real operational power of DNRR was used to compare with calculation power results from DalatSim to verify its capability. The verification results are presented and discussed.

scholarly journals Interim Storage of the Dalat Nuclear Research Reactor: Radiation Safety Analysis

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Kien-Cuong Nguyen ◽  
Vinh-Vinh Le ◽  
Ton-Nghiem Huynh ◽  
Ba-Vien Luong ◽  
Nhi-Dien Nguyen ◽  
...  
Keyword(s):  
Research Reactor ◽  
Radiation Safety ◽  
Nuclear Research ◽  
Severe Case ◽  
Safety Analysis ◽  
Water Levels ◽  
Spent Fuel ◽  
Nuclear Research Reactor ◽  
Enriched Uranium ◽  
Interim Storage

Radiation safety analysis of a new interim storage of the Dalat Nuclear Research Reactor (DNRR) for keeping spent high enriched uranium (HEU) fuel bundles during the core conversion to low enriched uranium (LEU) fuel had been performed and presented. The photon source and decay heat of the spent HEU fuel bundles were calculated using the ORIGEN2.1 code. Gamma dose rates of the spent fuel interim storage were evaluated using the MCNP5 code with various scenarios of water levels in the reactor tank and cooling time. The radiation safety analysis shows that the retention of 106 spent HEU fuel bundles at the interim storage together with a core of 92 LEU fuel bundles meets the requirements of radiation safety. The results indicate that in the most severe case, i.e., the complete loss of water in the reactor tank, the operators still can access the reactor hall to mitigate the accident within a limited time. Particularly, in the control room, the dose rate of about 1.4  μ Sv / h is small enough for people to work normally.

scholarly journals Real-time neutron radiography at the IEA-R1m nuclear research reactor

2003 ◽  
Vol 33 (2) ◽  
pp. 282-285 ◽  
Author(s):  
M. O. de Menezes ◽  
R. Pugliesi ◽  
M. A. S. Pereira ◽  
M.L.G. Andrade
Keyword(s):  
Real Time ◽  
Research Reactor ◽  
Neutron Radiography ◽  
Nuclear Research ◽  
Nuclear Research Reactor

scholarly journals MCNP model of L-54M nuclear research reactor: validation by preliminary graphite radiological characterization

2019 ◽  
Vol 322 (3) ◽  
pp. 1341-1350
Author(s):  
Eros Mossini ◽  
Luca Codispoti ◽  
Giorgio Parma ◽  
Filippo Maria Rossi ◽  
Elena Macerata ◽  
...  
Keyword(s):  
Research Reactor ◽  
Nuclear Research ◽  
Nuclear Research Reactor ◽  
Radiological Characterization

State of the Art of Nuclear Reactor Instrument Automation

1974 ◽  
Vol 96 (4) ◽  
pp. 394-398
Author(s):  
M. Taeschner ◽  
R. Gariod
Keyword(s):  
High Performance ◽  
Nuclear Reactor ◽  
Research Reactor ◽  
State Of The Art ◽  
Nuclear Research ◽  
Automation System ◽  
Nuclear Research Reactor ◽  
High Investment

Due to its complexity, nuclear reactor instrument automation is a challenge to engineers. High investment and running costs of a nuclear research reactor imply the use of advanced equipment and concepts for instrument automation when striving for high performance, reliability, and operational convenience under budgetary pressure. The article describes a successfully operating instrument automation system stressing the important underlying concepts trying to avoid too much details on specific hardware which is dependent on the time when one must order things.

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