NEN-EN-ISO 15646:2016 en

Re-sintering proef voor UO2, (U, Gd)O2 en (U, Pu)O2 pellets


Over deze norm

Status Definitief
Aantal pagina's 6
Commissie Radioactiviteit - Toepassing en meten
Gepubliceerd op 01-04-2016
Taal Engels
NEN-EN-ISO 15646 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 a nd ( 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. On the assumption of the prediction, it is necessary to correlate the results of this test by some correlation rules, because the results of this test vastly depend on the re-sintering conditions (such as heat treatment temperature, treatment time, gas content, and partial oxygen pressure).


ICS-code 27.120.30
Nederlandse titel Re-sintering proef voor UO2, (U, Gd)O2 en (U, Pu)O2 pellets
Engelse titel Re-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets



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