Cap-spire pulsing [electronic resource].
- 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
United States. Department of Energy. Office of Scientific and Technical Information
- 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.
- Published through SciTech Connect.
- Type of Report and Period Covered Note:
- Topical; 06/01/1960 - 06/01/1960
- Funding Information:
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