| Issue |
EPJ Web Conf.
Volume 308, 2024
ISRD 17 – International Symposium on Reactor Dosimetry (Part II)
|
|
|---|---|---|
| Article Number | 03006 | |
| Number of page(s) | 8 | |
| Section | Reactor Surveillance, Plant Life Management and Decommissioning | |
| DOI | https://doi.org/10.1051/epjconf/202430803006 | |
| Published online | 11 November 2024 | |
https://doi.org/10.1051/epjconf/202430803006
Estimation of neutron fluence distribution within German PWR components for decommissioning studies
1 Helmholtz-Zentrum Dresden-Rossendorf, 01328 Dresden, Germany
2 PreussenElektra GmbH, 30457 Hannover, Germany
* Corresponding author: r.rachamin@hzdr.de
Published online: 11 November 2024
On 15 April 2023, the last German NPPs were shut down. The final shutdown is followed by a post-operational phase in which measures can be carried out to prepare for the NPPs dismantling and decommissioning. One of the tasks in preparation for the dismantling is to acquire accurate knowledge of the activation distribution within the reactor components. The activation levels depend on the neutron fluence within the reactor. Therefore, to achieve this task, a 3D detailed Monte Carlo model of a German PWR has been developed to calculate the neutron fluence characteristics (spectrum and distribution) within the components of such nuclear reactors type. The reliability of the calculations was validated via metal foil-activation measurements carried out in two active PWRs. This paper presents the Monte Carlo model and describes the calculations and measurement procedures.
© The Authors, published by EDP Sciences, 2024
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