The irradiation tests of sealing materials

Harri Joki, Riitta Zilliacus

Research output: Chapter in Book/Report/Conference proceedingChapter or book articleProfessional


Two different sealing materials used in the reactor containment buildings, butyl rubber IIR and ethylene-propylene-diene-terpolymer EPDM have been tested in the severe accident conditions, radiation field and simultaneous alkaline water exposure. There were clear differences between these two materials with radiation doses of some hundred kGy. Butyl rubber material is according to these experiments more sensitive for the radiation than EPDM, and already 115 kGy dose is changing the hardness values of the material considerably. EPDM is obviously undamaged after irradiation with 260 kGy dose.
Original languageEnglish
Title of host publicationSAFIR, The Finnish Research Programme on Nuclear Power Plant Safety 2003 - 2006
Subtitle of host publicationInterim Report
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
ISBN (Electronic)951-38-6516-9
ISBN (Print)951-38-6515-0
Publication statusPublished - 2004
MoE publication typeD2 Article in professional manuals or guides or professional information systems or text book material

Publication series

SeriesVTT Tiedotteita - Research Notes

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