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Normas DIN – AENOR
DIN EN ISO 15646:2015-10

DIN EN ISO 15646:2015-10

Re-sintering test for UO<(Index)2>, (U,Gd)O<(Index)2> and (U,Pu)O<(Index)2> pellets (ISO 15646:2014); German and English version FprEN ISO 15646:2015 / Note: Date of issue 2015-09-04

Test de refrittage pour pastilles UO<(Index)2>, (U,Gd)O<(Index)2> et (U,Pu)O<(Index)2> (ISO 15646:2014); Version allemande et anglaise FprEN ISO 15646:2015 / Attention: Date de parution 2015-09-04

Nachsintertest für UO<(Index)2>- , (U,Gd)O<(Index)2>- und (U,Pu)O<(Index)2>-Pellets (ISO 15646:2014); Deutsche und Englische Fassung FprEN ISO 15646:2015 / Achtung: Erscheinungsdatum 2015-09-04

Fecha Anulación:
2016-07 /Withdrawn
Equivalencias internacionales:

FprEN ISO 15646 (2015-08)

ISO 15646 (2014-06)

Relación con otras normas DIN:

Reemplazada por: DIN EN ISO 15646:2016-07

Resumen:
ISO 15646:2014 describes a procedure for measuring the densification of UO<(Index)2>, (U,Gd)O<(Index)2>, and (U,Pu)O<(Index)2> 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)O<(Index)2> and (U,Pu)O<(Index)2>, oxide phase structure. A thermal re-sintering test can be used to characterize the dimensional behaviour of the pellets under high temperature. 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.
Keywords:
Density, Density measurement, Determination procedures, Fuels, Heat, Materials testing, Measurement, Measuring techniques, Nuclear fuels, Pellets, Plutonium, Sintering, Testing, Uranium, Uranium dioxide
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