ISO 15646:2014
Current
The latest, up-to-date edition.
Re-sintering test for UO2, (U,Gd)O2 and (U,Pu)O2 pellets
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English, French
13-06-2014
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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.
| Committee |
ISO/TC 85/SC 5
|
| DevelopmentNote |
Supersedes ISO/DIS 15646. (06/2014)
|
| DocumentType |
Standard
|
| Pages |
6
|
| PublisherName |
International Organization for Standardization
|
| Status |
Current
|
| Standards | Relationship |
| NF EN ISO 15646 : 2016 | Identical |
| NBN EN ISO 15646 : 2016 | Identical |
| NEN EN ISO 15646 : 2016 | Identical |
| NS EN ISO 15646 : 2016 | Identical |
| I.S. EN ISO 15646:2016 | Identical |
| PN EN ISO 15646 : 2016 | Identical |
| SN EN ISO 15646:2016 | Identical |
| UNI EN ISO 15646 : 2016 | Identical |
| UNE-EN ISO 15646:2016 | Identical |
| BS EN ISO 15646:2016 | Identical |
| EN ISO 15646:2016 | Identical |
| DIN EN ISO 15646:2016-07 | Identical |
| BS ISO 15646 : 2014 | Identical |
| ISO 9278:2008 | Nuclear energy - Uranium dioxide pellets — Determination of density and volume fraction of open and closed porosity |
| ISO 3369:2006 | Impermeable sintered metal materials and hardmetals — Determination of density |
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