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  • BSI
    BS EN ISO 15646:2016 Re-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets
    Edition: 2016
    $316.70
    / user per year

Description of BS EN ISO 15646:2016 2016

This International Standard 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).



Standard NumberBS EN ISO 15646:2016
TitleRe-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets
StatusDefinitive
Publication Date2016-05-31
Identical National Standard OfISO 15646:2014, EN ISO 15646:2016
CorrectsBS ISO 15646:2014
DescriptorsControl samples, Radioactive sources, Calibration, Exposure-rate meters, Radionuclides, Radiation measurement, Beta-particles, Photons, Nuclear radiation, Dosimeters, Error correction, Nuclear power
ICS27.120.30 Fissile materials and nuclear fuel technology
CommitteeNCE/9
ISBN978 0 580 90935 1
PublisherBSI
Pages16

About BSI

BSI Group, also known as the British Standards Institution is the national standards body of the United Kingdom. BSI produces technical standards on a wide range of products and services and also supplies certification and standards-related services to businesses.
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