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RESEARCH PAPERS

A High Reliability Straight Tube LMFBR Steam Generator Design

[+] Author and Article Information
A. H. Spring, D. D. DeFur

Combustion Engineering, Inc., 911 West Main Street, Chattanooga, TN 37403

J. Eng. Power 102(3), 568-572 (Jul 01, 1980) (5 pages) doi:10.1115/1.3230303 History: Received March 23, 1979; Online September 28, 2009

Abstract

Straight-tube counterflow steam generators for LMFBR applications have been proposed, tested, fabricated and operated with varying degrees of success. A new embodiment of the straight-tube concept is described which incorporates a number of unique features which contribute to high reliability and availability. These features include a replaceable bellows for accommodation of differential thermal expansion between shell and tubes and a redundant, crevice-free tube-to-tubesheet joint design. The design can also easily incorporate single-wall or double-wall tubes. Single and double-wall tube versions are described whose thermal and geometric size are based on anticipated manufacturing limitations. The results of scoping tests of the tube-to-tubesheet welds are described which provide positive indications of the soundness of the weld design.

Copyright © 1980 by ASME
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