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Cap-spire pulsing [electronic resource].

Published:
Washington, D.C. : United States. Dept. of Energy, 1960.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:
14 pages : digital, PDF file
Additional Creators:
General Electric Company, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary:
The cap-spire pulsing technique of preheating the cap-spire portion of the fuel assembly does significantly improve the brazing of the cap-spire assembly. The air pocket at the spire wafer junction is fully removed. The cap side wafer is essentially 100% wetted with brazing alloy. Destructive tests show that a 4 to 1 improvement in most quality measurements is achieved over present cap preheating techniques, without using additional cleaning step of spire etching. The pulsing is accomplished by a cammed drive system, using a stroke of three-fourths of an inch with a spring return. The system is driven by an electrical gear reduction motor at a rate of 1.4 pulses per second. A preheating cycle of 21 ± 2 seconds is used for the current I&E cap designs. The cap-spire assembly does not require any special treatment other than the normal chemical cleaning.
Report Numbers:
E 1.99:hw--65800
hw--65800
Subject(s):
Other Subject(s):
Note:
Published through SciTech Connect.
06/15/1960.
"hw--65800"
"DE94011294"
Burgess, C.A.
Type of Report and Period Covered Note:
Topical; 06/01/1960 - 06/01/1960
Funding Information:
AC06-76RL01830
View MARC record | catkey: 14369582