Fission Products Release from Irradiated FBR MOX Fuel during Transient Conditions.

High temperature behavior of irradiated mixed nitride fuel during heating tests

“…The test specimens were heated in an induction heating furnace in an atmosphere of flowing high-purity Ar carrier gas at 0.1 MPa. Details of the heating apparatus can be seen in the literature [4]. The heating tests were designated Nifti-1 and Nifti-2 (Nifti: nitride fuel heating test after irradiation), using fuel samples of approximately 5 and 3 g, respectively.…”

“…At the same time, a portion of the released gas was intermittently analyzed utilizing gas chromatography to calibrate the in situ gas concentration data. Details of analysis systems have been given in the literature [4]. After these heating tests, metallographic observations and EPMA for these specimens were carried out to get microstructures and elemental distributions.…”

Research Program for the Evaluation of Fission Product and Actinide Release Behaviour, Focusing on their Chemical Forms

“…In order to improve the CORSOR-M and CORSOR-Booth models, FP and actinide release kinetics from the fuel, the chemical forms just after their release will be investigated by using a thermogravimetry (TG) -differential thermal analysis (DTA) -mass spectrometry (MS) device and a FP release test device [58,59].…”

“…The FP release kinetics will also be investigated by using the FP release test device that is installed in a hot cell [58,59]. Fig.…”

“…In order to improve the chemical form categorization, stability of the FPs and actinides will be evaluated by an experimental investigation of chemical forms of deposited FPs and actinides by using the FP release test device [58,59]. The trapping system for FPs and actinides consists of sampling tubes in TGTs and filters as mentioned before.…”