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Normas BSI – AENOR
BS EN ISO 15646:2016

BS EN ISO 15646:2016

Re-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets

2016-05-31 /Definitive
Equivalencias internacionales:

EN ISO 15646:2016

ISO 15646:2014

ISO 15646:2014 describes a procedure for measuring the densification of UO2, (U,Gd)O2, and (U,Pu)O2 pellets, achieved by heat treatment under defined conditions. The densification of fuel in power operation is an important design feature. Essentially, it is dependent on structural parameters such as pore size, spatial pore distribution, grain size, and in the case of (U,Gd)O2 and (U,Pu)O2, oxide phase structure. A thermal re-sintering test can be used to characterize the dimensional behaviour of the pellets under high temperature. The results of this test are used by the fuel designer to predict dimensional behaviour in the reactor, because thermal densification in the reactor is also dependent on these structural parameters, albeit in a differing manner in terms of quantity.
Control samples, Radioactive sources, Calibration, Exposure-rate meters, Radionuclides, Radiation measurement, Beta-particles, Photons, Nuclear radiation, Dosimeters, Error correction, Nuclear power
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