Apparatus for testing He leakage through flange gaskets at elevated pressure and temperature

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22320%2F21%3A43921940" target="_blank" >RIV/60461373:22320/21:43921940 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S0149197021001955?via%3Dihub" target="_blank" >https://www.sciencedirect.com/science/article/pii/S0149197021001955?via%3Dihub</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.pnucene.2021.103831" target="_blank" >10.1016/j.pnucene.2021.103831</a>

Result language
angličtina
Original language name
Apparatus for testing He leakage through flange gaskets at elevated pressure and temperature
Original language description
The study focuses on the measurement of He leakage from the cooling circuits of the helium-cooled GFR (gascooled fast reactor). It is necessary to measure two phenomena, namely losses of He from the pipeline circuit through flange joints and the contamination of helium inside the pipeline by the diffusion of permanent gases from the external environment (i.e. against the pressure gradient). Methods for determining the tightness of flange joints according to current standards are not fully suitable for these purposes. For this reason, a selfdesigned apparatus was constructed in order to measure both effects at pressures up to 20 MPa and temperatures within the range from ambient values up to 400 ◦C. Gas chromatography with a PDHID detector was used to determine the rate of diffusion of nitrogen and other permanent gases through the flange into pure He. On the other hand, the He leakage through the piping flange joint into the external environment was measured using a gas chromatograph with a high sensitivity TCD. The issues of heat distribution within the high-pressure measuring vessel are discussed as well.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20704 - Energy and fuels

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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