This title appears in the Scientific Report :
2003
Please use the identifier:
http://dx.doi.org/10.1016/S0029-5493(02)00348-5 in citations.
Hydrogen Removal from LWR Containments by Catalytic-Coated Thermal Insulation Elements (THINCAT)
Hydrogen Removal from LWR Containments by Catalytic-Coated Thermal Insulation Elements (THINCAT)
In the THINCAT project, an alternative concept for hydrogen mitigation in a light water reactor (LWR) containment is being developed. Based on catalytic coated thermal insulation elements of the main coolant loop components, it could be considered either as an alternative to backfitting passive auto...
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Personal Name(s): | Fischer, K. |
---|---|
Bröckerhoff, P. / Ahlers, G. / Gustavsson, V. / Herranz, L. / Polo, J. / Dominguez, T. / Royl, P. | |
Contributing Institute: |
Institut für Sicherheitsforschung und Reaktortechnik; ISR |
Published in: | Nuclear engineering and design, 221 (2003) S. 137 - 149 |
Imprint: |
Amsterdam [u.a.]
Elsevier Science
2003
|
Physical Description: |
137 - 149 |
DOI: |
10.1016/S0029-5493(02)00348-5 |
Document Type: |
Journal Article |
Research Program: |
Nukleare Sicherheitsforschung |
Series Title: |
Nuclear Engineering and Design
221 |
Subject (ZB): | |
Publikationsportal JuSER |
In the THINCAT project, an alternative concept for hydrogen mitigation in a light water reactor (LWR) containment is being developed. Based on catalytic coated thermal insulation elements of the main coolant loop components, it could be considered either as an alternative to backfitting passive autocatalytic recombiner devices, or as a reinforcement of their preventive effect. The present paper summarises the results achieved at about project mid-term. Potential advantages of catalytic thermal insulation studied in the project are:reduced risk of unintended ignition,no work space obstruction in the containment,no need for seismic qualification of additional equipment,improved start-up behaviour of recombination reaction.Efforts to develop a suitable catalytic layer resulted in the identification of a coating procedure that ensures high chemical reactivity and mechanical stability. Test samples for use in forthcoming experiments with this coating were produced. Models to predict the catalytic rates were developed, validated and applied in a safety analysis study. Results show that an overall hydrogen concentration reduction can be achieved which is comparable to the reduction obtained using conventional recombiners. Existing experimental information supports the argument of a reduced ignition risk. (C) 2002 Elsevier Science B.V. All rights reserved. |