atw - International Journal for Nuclear Power | 05.2022

atw Vol. 67 (2022) | Ausgabe 5 ı September
| Youngs Scientist‘s Workshop at KERNTECHNIK 2022.
Simulating Residual Heat Removal via a Two-
Phase Large Scale Loop Thermosyphon”. Loop
thermosiphons (LTS) are considered suitable
devices for a Passive Residual Heat Removal
System. Datasets from a large-scale atmospheric
LTS-experimental facility were used to assess and
validate the performance of LTS-models developed
with ATHLET-code. A total of 18 stationary
states for single and two-phase operation were
analyzed in detail featuring variations in heat
inputs and filling ratios. A proper data agreement
and prediction of loop fluctuations for the twophase
operation was achieved, indicating that
ATHLET is suitable for simulating LTS-facilities.
R. Vennemann explained “Simulation of Pool
Scrubbing Experiments Performed in the Large-
Scale SAAB Facility”. The paper deals with a
review of the experimental facility including a
description of a specific experiment and its simulation
with the Containment Code System COCOSYS,
which is part of the software package AC ² . The
considered experiment investigates the retention
of CsI by Pool Scrubbing. The Pool Scrubbing
model SPARC-B/98 is used to calculate the aerosol
depletion efficiency and the decontamination
factor. Contrary to the simulation, the depletion
efficiency decreases for larger aerosols in the
experiment, which is explained by a coursing of
the aerosols and a shift in the size distribution. It
becomes obvious that the discrepancy in the
decontamination factor can not only be explained
by hydrodynamic parameters.
Shanyao Zhang talked about a “Comparison of
the Performance Parameters of Tools for a Decontamination
of Corners”. Currently, corners are
worked on with hand-held tools with a connected
vacuum exhaust system for the reduction of the
dust emissions, such as needle gun, milling tool
and concrete grinder. These tools are not specially
designed for the decontamination of corners, so
that they cannot provide a good work performance
to decontaminate the corners. Based upon a
comparison of performance parameters and investigation
of the fracture mechanisms of the
currently used tools, an innovative, partially automated
demonstrator for a dry-mechanical decontamination
of corners in nuclear facilities will be
developed.
Author
Prof. Dr.-Ing. Jörg Starflinger
Chair of Nuclear Technology and Reactor Safety at
the Institute of Nuclear Technology and Energy
Systems of the University of Stuttgart
joerg.starflinger@ike.uni-stuttgart.de
Jörg Starflinger received his Dr.-Ing. from Ruhr University Bochum in 1997. Afterwards,
he moved to FZK (now KIT) as a Post-Doc working on hydrogen safety and
nuclear plant simulations. From 2006-2010, he served as coordinator a FP6 European
Project (HPLWR Phase 2). In 2010, he became full professor.
Being member of the Board of the German Nuclear Society he is serving as
contact point for the “KTG Junge Generation” and was elected KTG Treasurer in
2021. He became board member, Vice-President of the European Nuclear Education
Network (ENEN aisbl.) and was elected President of ENEN in 2020. He is proactively
supporting and promoting national and international activities for
students during their career development. Together with engaged and forwardthinking
colleagues, he is co-organizing the Young Scientist Workshop.
KERNTECHNIK 2022 · 21. – 22. JUNI · LEIPZIG 73
Special | KERNTECHNIK 2022
BEST PAPER AWARD YSW ı Conference Report ı Jörg Starflinger