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Hydrogen permeation through heat transfer pipes made of Hastelloy XR during the initial 950$$^{circ}$$C operation of the HTTR

Sakaba, Nariaki ; Ohashi, Hirofumi ; Takeda, Tetsuaki

The permeation of hydrogen isotopes through the Hastelloy XR high-temperature alloy adopted for the heat transfer pipes of the intermediate heat exchanger in the HTTR, is one of the concerns in the hydrogen production system, which will be connected to the HTTR in the near future. The hydrogen permeation between the primary and secondary coolant through the Hastelloy XR was evaluated using the actual hydrogen concentration observed during the initial 950$$^{circ}$$C operation of the HTTR. The hydrogen permeability of the Hastelloy XR was estimated conservatively high as follows. The activation energy E$$_{0}$$ and pre-exponential factor F$$_{0}$$ of the permeability of hydrogen were E$$_{0}$$ = 65.8 kJ/mol and F$$_{0}$$ = 7.8$$times$$10$$^{-9}$$m$$^{3}$$(STP)/(m$$ast$$s$$ast$$Pa$$^{0.5}$$), respectively, in the temperature range from 707K to 900K.

Language

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English

Journal

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Journal of Nuclear Materials

Volume

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353

Number

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1-2

Pages

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p.42 - 51

Publication Year/Month

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2006/07

Meeting title

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Held date

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Location (city)

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Location (country)

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Patent information

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PDF

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Paper URL

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https://doi.org/10.1016/j.jnucmat.2006.03.008

DOI for research data

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Keywords

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Hydrogen Permeation; Hastelloy XR; Intermediate Heat Exchanger; Tritium; Hydrogen Production; IS Process; Non Nuclear Standard; HTTR; HTGR; VHTR

Research Facility

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HTTR(高温工学試験研究炉)  

Press Release

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Article of JAEA R&D Review

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Towards Reducing Tritium Concentration in the Hydrogen Produced by Very High Temperature Reactors; Permeability of Hydrogen of Operating Reactor Measured for the First Time[/]

Cooperating Institute

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Accesses

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- Accesses

InCites™

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Percentile:53.38

Category:Materials Science, Multidisciplinary

Altmetrics

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