Estimation of neutron fluence distribution within German PWR components for decommissioning studies

Reuven Rachamin, Astrid Barkleit, Jörg Konheiser, Marcus Seidl

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

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.

Original languageEnglish
Title of host publicationISRD 17 - International Symposium on Reactor Dosimetry (Part II)
EditorsPavel Frajtag, Dean hornton, Jan Wagemans
PublisherEDP Sciences
ISBN (Electronic)9782759891276
DOIs
StatePublished - 11 Nov 2024
Externally publishedYes
Event17th International Symposium on Reactor Dosimetry (Part II), ISRD 2023 - Lausanne, Switzerland
Duration: 21 May 202326 May 2023

Publication series

NameEPJ Web of Conferences
Volume308
ISSN (Print)2101-6275
ISSN (Electronic)2100-014X

Conference

Conference17th International Symposium on Reactor Dosimetry (Part II), ISRD 2023
Country/TerritorySwitzerland
CityLausanne
Period21/05/2326/05/23

ASJC Scopus subject areas

  • General Physics and Astronomy

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