Study on the tritium behaviors in the VHTR system. Part 1. Development of tritium analysis code for VHTR and verification

A tritium permeation analyses code (TPAC) has been developed at Idaho National Laboratory (INL) by using MATLAB SIMULINK package for analysis of tritium behaviors in the VHTR integrated with hydrogen production and process heat application systems. The modeling is based on the mass balance of tritiu...

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Bibliographic Details
Published in:Nuclear engineering and design 2010-07, Vol.240 (7), p.1758-1767
Main Authors: Kim, Eung S., Oh, Chang H., Patterson, Mike
Format: Article
Language:English
Subjects:
ANALYTICAL SOLUTION
Applied sciences
BENCHMARKS
Controled nuclear fusion plants
DESIGN
ELECTROLYSIS
Energy
Energy. Thermal use of fuels
ENGINEERING
Exact sciences and technology
Fission nuclear power plants
Fuels
HEAT EXCHANGERS
HYDROGEN
HYDROGEN PRODUCTION
IDAHO
Installations for energy generation and conversion: thermal and electrical energy
ISOTOPIC EXCHANGE
MASS BALANCE
Mathematical analysis
Mathematical models
Matlab
modeling
NEUTRON REACTIONS
Nuclear fuels
Nuclear reactor components
Penetration
Permeation
PROCESS HEAT
PURIFICATION
Reactor design
SIMULATION
Simulink
STEAM
TERNARY FISSION
TRITIUM
VERIFICATION
VHTR
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Summary:A tritium permeation analyses code (TPAC) has been developed at Idaho National Laboratory (INL) by using MATLAB SIMULINK package for analysis of tritium behaviors in the VHTR integrated with hydrogen production and process heat application systems. The modeling is based on the mass balance of tritium-containing species and hydrogen (i.e., HT, H 2, HTO, HTSO 4, and TI) coupled with a variety of tritium source, sink, and permeation models. The code includes: (1) tritium sources from ternary fission and neutron reactions with 6Li, 7Li 10B, and 3He; (2) tritium purification system; (3) leakage of tritium with coolant; (4) permeation through pipes, vessels, and heat exchangers; (5) electrolyzer for high temperature steam electrolysis (HTSE); and (6) isotope exchange for SI process. Verification of the code has been performed by comparisons with the analytical solutions, the experimental data, and the benchmark code results based on the Peach Bottom reactor design. The results showed that all the governing equations are well implemented into the code and correctly solved. This paper summarizes all the background, the theory, the code structures, and some verification results related to the TPAC code development at INL.
ISSN:0029-5493
1872-759X
DOI:10.1016/j.nucengdes.2010.02.023