A rare opportunity to validate Gd-depletion modelling
In 2019, Studsvik had the opportunity to transport and perform basic PIE of an intact Gd- fuel rod irradiated with only about 11 months of operation in a Swedish BWR. With only one cycle of operation the rod average burnup is as low as 9 MWd/kgU, a rare opportunity having such low burn up rod sent to a hot cell facility. Together with the Swedish utility Vattenfall, Studsvik has evaluated how to leverage on this unique material for a collective benefit to the nuclear community.
The LAGER project is proposed as a joint effort to better understand and quantify the radial distribution of burnable gadolinium isotopes in a fuel rod with low and relevant burnup. Similar data is currently scarcely available and estimated values are instead used in current models. Our joint conclusion is that this topic should be of interest for several organizations and hence invite to a multilateral project for the scope of work.
These data are needed to further develop accurate models for the Gd-depletion to enable prediction of the assembly peak reactivity and the power distribution within the assembly. Data are highly valuable for both operational and back-end applications
Interested to join or to learn more about project LAGER - contact us already today!