Chlorine release from Hypalon cable insulation during severe nuclear reactor accidents

Ari Auvinen, Jorma Jokiniemi, Riitta Zilliacus

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)


    Pyrolytic dehydrochlorination of the electrical cable insulation Hypalon was studied as a function of time and temperature. The chlorine evolution was determined separately by means of on-line activity measurements and by neutron activation analysis in the temperature range 200°C to 300°C, with one test conducted at 500°C. The object of the research was to determine the chlorine release and the chlorine release fraction as a function of temperature. The data obtained were needed to formulate conclusions regarding the release mechanisms of chlorine. Estimates of the amount of hydrochloric acid released to the containment building in a severe reactor accident were also calculated. It can be concluded that the amount of chlorine release from the Hypalon cable is significant and will have an effect on iodine behavior in a severe accident.
    Original languageEnglish
    Pages (from-to)232 - 241
    Number of pages10
    JournalNuclear Technology
    Issue number2
    Publication statusPublished - 2005
    MoE publication typeA1 Journal article-refereed


    • chlorine
    • cable pyrolysis
    • severe nuclear accident


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