ISO 15646:2014

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

Published By	Publication Date	Number of Pages
ISO	2014-06	12

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Categories: 27.120.30 - Fissile materials and nuclear fuel technology, ISO

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Description

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.

Additional information

Published Code	ISO
Published By	International Organization for Standardization
Publication Date	2014-06
Pages Count	12
Language	France
Edition	1
File Size	378.9 KB
ICS Codes	27.120.30 - Fissile materials and nuclear fuel technology

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ISO 15646:2014

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