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Four transient test series (ramptests) on 22 pre-irradiated Pressurized Water Reactor (PWR) fuel rodlets containing MOX fuel produced by different fabrication techniques have been performed at the HFR Petten using its capsule type LWR fuel rod testing facilities. The fuel rodlets of 10.75mm diameter and 390mm length and a burnup between 10 and 45 GWd/t (fissile M) were submitted to in-situ transient scenaria typically consisting of a 72h conditioning period at a power level of 250 to 300 W/cm and a transient test with 100 W/cm.min ramprate to a terminal power of 400 to 560 W/cm, which was held for 52h - in case no failure (activity release) occurred earlier. The tests demonstrated that modern PWR MOX fuel rods, as commercially delivered since approx. 1980, yield similar or even better results than standard PWR UO2 fuel rods during steady state and transient operation.

Additional information

Authors: FISCHER G, Siemens AG, Erlangen (DE);COLL W, Siemens AG, Erlangen (DE);RUYTER I, Kernforschungsanlage Julich (DE);MARKGRAF J, JRC Petten Estab. (NL)
Bibliographic Reference: Paper presented: KTG Jahrestagung 1989, Dusseldorf (DE), May 9-11 1989
Availability: Available from (1) as Paper DE 34554 ORA
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