Hydrogen generation from steam reaction with tungsten

A LOCA in a fusion reactor involving an ingress of steam presents a safety concern due to hydrogen generated from steam reactions with plasma facing components. Hydrogen concentrations must be maintained below explosive levels. To support safety evaluations we have experimentally determined hydrogen...

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Published in:Journal of nuclear materials 1998-10, Vol.258, p.1979-1984
Main Authors: Smolik, G.R, McCarthy, K.A, Petti, D.A, Coates, K
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Language:English
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cited_by cdi_FETCH-LOGICAL-c338t-9642f7f4cc99d61d06635c009ea28d98064e8d0fff97ca239adab519ba351c3e3
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container_end_page 1984
container_issue
container_start_page 1979
container_title Journal of nuclear materials
container_volume 258
creator Smolik, G.R
McCarthy, K.A
Petti, D.A
Coates, K
description A LOCA in a fusion reactor involving an ingress of steam presents a safety concern due to hydrogen generated from steam reactions with plasma facing components. Hydrogen concentrations must be maintained below explosive levels. To support safety evaluations we have experimentally determined hydrogen generation rates when a tungsten alloy is exposed to steam from 400°C to 1200°C. We studied effects of steam pressure between 2.8 × 10 4 and 8.5 × 10 4 Pa, i.e., (0.28–0.84 atm) and gas velocity between 0.011 and 0.063 m/s. We present relationships for the reaction rates, oxidation phases, and mechanisms associated with the hydrogen generation.
doi_str_mv 10.1016/S0022-3115(98)00169-X
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title Hydrogen generation from steam reaction with tungsten
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