THERMAL TEST OF A CUBIC DUCTILE CAST IRON CONTAINER FILLED WITH AN ION EXCHANGER RESIN

Year

1998

Author(s)

G. Wieser - Bundesanstalt fuer Materialforschung und –pruefung (BAM), D-12200 Berlin, Germany

B. Droste - Bundesanstalt fuer Materialforschung und –pruefung (BAM), D-12200 Berlin, Germany

B.-R. Martens - Bundesanstalt für Strahlenschutz (BfS), Salzgitter

U. Probst - BAM Bundesanstalt für Materialforschung und –prüfung D?12200 Berlin, Germany

D. Schreiber - Gesellschaft für Nuklear-Service mbH, Essen, Germany

H. Völzke - Bundesanstalt für Strahlenschutz (BfS), Salzgitter

File Attachment

429.PDF1.05 MB

Abstract

The thermal test described in this paper is related to a more severe fire test criterion for the German repository \"Konrad\" (BfS 1995) in relation to the IAEA type B package fire test conditions. A container is tested without an impact limiter and has to withstand an 800°C-fire over one hour. The test container was made of ductile cast iron (GGG40) and filled with 2360kg of an inactive spherical ion exchanger resin with 50% moisture. The maximum temperature of ion exchanger resin in contact with the container wall was 392°C, 145°C at the bulk centre and the maximum inner pressure was 0.93 MPa. The maximum seal temperature was 238°C. For a complete safety assessment it was necessary to verify that the content of the test container had a thermal stability less than ion exchanger resin after use in nuclear power plants. This was done by using thermogravimetry and small scale autoclave tests.