Hydrogen generation from steam reaction with tungsten

被引：18

作者：

Smolik, GR ^{[1
]}

McCarthy, KA ^{[1
]}

Petti, DA ^{[1
]}

Coates, K ^{[1
]}

机构：

[1] Idaho Natl Engn & Environm Lab, LMITCO, Idaho Falls, ID 83415 USA

来源：

JOURNAL OF NUCLEAR MATERIALS | 1998年 / 258卷

关键词：

D O I：

10.1016/S0022-3115(98)00169-X

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 degrees C to 1200 degrees C. We studied effects of steam pressure between 2.8 x 10(4) and 8.5 x 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. (C) 1998 Published by Elsevier Science B.V. All rights reserved.

引用

页码：1979 / 1984

页数：6