Conference Proceedings Paper
Options and Challenges of Steam Cycle Components for SCWR
NURETH-14 - 2011 September 25-30
Thomas Schulenberg (Karlsruhe Institute for Technology)
Marc Schlagenhaufer (TÜV SÜD)
Heiko Herbell (EnBW Kernkraft GmbH)
The steam cycle of supercritical water cooled reactors (SCWR) is intended to be based on the
experience with supercritical fossil fired power plants and on boiling water reactors. Different
steam cycle concepts have been proposed up to now for the SCWR, and its key components are
discussed in more detail here. These are the turbine design, the reheater or steam separator
design, the design and operation of the start-up system, the feedwater line with 7 preheater
stages, the feedwater tank and the high pressure feedwater pumps. The paper highlights the
design features, discusses the thermal-hydraulic and technical challenges and summarizes recent
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