Chlorine release by pyrolysis from hypalon cable insulation material and its effect on iodine speciation in the containment

Ari Auvinen, Jorma Jokiniemi, Riitta Zilliacus

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

In this work the dehydrochlorination of hypalon by pyrolysis was studied applying online activity measurements and neutron activation analysis. Temperature range studied varied from 20TC to 30TC. For comparison one experiment was conducted at 5000 °C. Object of the research was to determine the temperature, where the chlorine release takes place, as well as the chlorine release fraction. By comparing different experiments conclusions about the release mechanisms could be made. Based on the acquired data estimates of the amount of hydrochloric acid released to the containment building in a severe accident were also calculated. As a result it can be concluded, that the amount of chlorine release from the hypalon cable material is significant and will have an effect on iodine behaviour in a severe accident.
Original languageEnglish
Title of host publicationIodine Aspects of Severe Accident Management
Subtitle of host publicationworkshop proceedings
Place of PublicationParis
PublisherOECD
Pages91 - 102
Publication statusPublished - 1999
MoE publication typeB3 Non-refereed article in conference proceedings
EventIodine Aspects of Severe Accident Management, OECD Nuclear Energy Agency - Vantaa, Finland
Duration: 18 May 199920 May 1999

Workshop

WorkshopIodine Aspects of Severe Accident Management, OECD Nuclear Energy Agency
CountryFinland
CityVantaa
Period18/05/9920/05/99

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