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Title: Mechanical design of core components for a high performance light water reactor with a three pass core

Abstract

Nuclear reactors using supercritical water as coolant can achieve more than 500 deg. C core outlet temperature, if the coolant is heated up in three steps with intermediate mixing to avoid hot streaks. This method reduces the peak cladding temperatures significantly compared with a single heat up. The paper presents an innovative mechanical design which has been developed recently for such a High Performance Light Water Reactor. The core is built with square assemblies of 40 fuel pins each, using wire wraps as grid spacers. Nine of these assemblies are combined to a cluster having a common head piece and a common foot piece. A downward flow of additional moderator water, separated from the coolant, is provided in gaps between the assemblies and in a water box inside each assembly. The cluster head and foot pieces and mixing chambers, which are key components for this design, are explained in detail. (authors)

Authors:
 [1]; ;  [2]; ;  [3]
  1. EnBW Kernkraft GmbH, Kernkraftwerk Philippsburg, D-76661 Philippsburg (Germany)
  2. University of Karlsruhe, 76133 Karlsruhe (Germany)
  3. Forschungszentrum Karlsruhe, Institute for Nuclear and Energy Technologies, 76021 Karlsruhe (Germany)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
20979654
Resource Type:
Conference
Resource Relation:
Conference: Advanced nuclear fuel cycles and systems (GLOBAL 2007), Boise - Idaho (United States), 9-13 Sep 2007; Other Information: Country of input: France; 6 refs; Related Information: In: Proceedings of GLOBAL 2007 conference on advanced nuclear fuel cycles and systems, 1873 pages.
Country of Publication:
United States
Language:
English
Subject:
22 GENERAL STUDIES OF NUCLEAR REACTORS; CLADDING; COOLANTS; DESIGN; FUEL PINS; GRIDS; MODERATORS; NUCLEAR CORES; PERFORMANCE; SUPERCRITICAL STATE; WATER; WATER COOLED REACTORS; WATER MODERATED REACTORS

Citation Formats

Fischer, Kai, Schneider, Tobias, Redon, Thomas, Schulenberg, Thomas, and Starflinger, Joerg. Mechanical design of core components for a high performance light water reactor with a three pass core. United States: N. p., 2007. Web.
Fischer, Kai, Schneider, Tobias, Redon, Thomas, Schulenberg, Thomas, & Starflinger, Joerg. Mechanical design of core components for a high performance light water reactor with a three pass core. United States.
Fischer, Kai, Schneider, Tobias, Redon, Thomas, Schulenberg, Thomas, and Starflinger, Joerg. 2007. "Mechanical design of core components for a high performance light water reactor with a three pass core". United States.
@article{osti_20979654,
title = {Mechanical design of core components for a high performance light water reactor with a three pass core},
author = {Fischer, Kai and Schneider, Tobias and Redon, Thomas and Schulenberg, Thomas and Starflinger, Joerg},
abstractNote = {Nuclear reactors using supercritical water as coolant can achieve more than 500 deg. C core outlet temperature, if the coolant is heated up in three steps with intermediate mixing to avoid hot streaks. This method reduces the peak cladding temperatures significantly compared with a single heat up. The paper presents an innovative mechanical design which has been developed recently for such a High Performance Light Water Reactor. The core is built with square assemblies of 40 fuel pins each, using wire wraps as grid spacers. Nine of these assemblies are combined to a cluster having a common head piece and a common foot piece. A downward flow of additional moderator water, separated from the coolant, is provided in gaps between the assemblies and in a water box inside each assembly. The cluster head and foot pieces and mixing chambers, which are key components for this design, are explained in detail. (authors)},
doi = {},
url = {https://www.osti.gov/biblio/20979654}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jul 01 00:00:00 EDT 2007},
month = {Sun Jul 01 00:00:00 EDT 2007}
}

Conference:
Other availability
Please see Document Availability for additional information on obtaining the full-text document. Library patrons may search WorldCat to identify libraries that hold this conference proceeding.

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