Störfällsimulation an bestrahlten Kugelbrennelementen bei Temperaturen von 1400 bis 2500 ° C
Störfällsimulation an bestrahlten Kugelbrennelementen bei Temperaturen von 1400 bis 2500 ° C
To simulate accident conditions in a HTGR of the pebble bed type 72 spherical fuel elements with 7 different fuel particle kinds were heated to 1400 to 2500 ° C. Fission product release and changes on fuel elements were investigated. Cesium release from all fuel elements started within 100 hours bet...
| Personal Name(s): | Schenk, W. (Corresponding author) |
|---|---|
| Contributing Institute: |
Publikationen vor 2000; PRE-2000; Retrocat |
| Imprint: |
Jülich
Kernforschungsanlage Jülich GmbH, Zentralbiliothek, Verlag
1983
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| Physical Description: |
130 p. |
| Document Type: |
Report Book |
| Research Program: |
ohne Topic |
| Series Title: |
Berichte der Kernforschungsanlage Jülich
1883 |
| Link: |
OpenAccess |
| Publikationsportal JuSER |
|
To simulate accident conditions in a HTGR of the pebble bed type 72 spherical fuel elements with 7 different fuel particle kinds were heated to 1400 to 2500 ° C. Fission product release and changes on fuel elements were investigated. Cesium release from all fuel elements started within 100 hours between 1400 and 1600 ° C. Krypton 85 on the other hand will released in significant amounts (> 1 %) only above 2000°C as a result of particle defects. A relatively good fission product retention was observed with 41 fuel elements with (U,Th)O$_{2}$ -BISO particles (THTR type). Particle defects and krypton release amounted to less than 1 %, whereas the cesium release at 1600 °C increased with higher burn up, exceeding 10 % after 50 hours. A lower cesium release of 3 to 5 % after 100 hours at 1600 °C was only measured from two fuel elements with TRISO particles. |