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Preliminary analysis of the impact of the General Electric wave beam grid spacer on GCFR core performance. [Thermal/hydraulic; mechanical] [electronic resource].

Published
Cincinnati, Ohio : General Electric Company, 1979.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: 44 : digital, PDF file
Additional Creators
General Electric Company and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
The three analyses relate to thermal/hydraulic and mechanical design evaluations of a staggered wave beam grid spacer for a GCFR fuel assembly. The calculated pressure loss coefficient was compared to the loss coefficent measured in water flow tests of an LMFBR assembly. The calculated value was 15% higher than the average experimental value for a Reynolds Number of 40,000. The heat transfer analysis showed that the wave beam caused a temperature increase in the cladding of approximately 50/sup 0/F. The wave beam grid spacers are retained by tabs which fit into recessed slots. One concern was whether the spacers could be retained in the duct as radiation-enhanced creep produced accelerated distortion (bowing) of the wall of the duct. Most data for 20% CW 316 stainless steel indicate the adequacy of the retention means. Another concern was potential friction and wear of the wave beams and fuel pins. It has been concluded that the roughened surfaces of the tubes (four-mil ridges with rounded corners) do not appear to present a serious problem with the wave beam grid spacer.
Report Numbers
E 1.99:doe/sf/01435-t2
doe/sf/01435-t2
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1979.
"doe/sf/01435-t2"
"DE81021229"
Not Available.
Funding Information
AC03-77SF01435
View MARC record | catkey: 14803018