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RESEARCH PAPERS

Weld Investigation of Nuclear Power Plant Pressure Vessels

[+] Author and Article Information
G. Itoh

Daiken Co., Ltd., Osaka, Japan

J. Pressure Vessel Technol 109(2), 224-227 (May 01, 1987) (4 pages) doi:10.1115/1.3264900 History: Received September 25, 1984; Revised January 22, 1987; Online November 05, 2009

Abstract

Welds in nuclear power plant pressure vessels, which were in accordance with the ASME Boiler and Pressure Vessel Code, though not with some other codes, were investigated nondestructively over a long period of service. The results indicate that the vessels have been operating for many years, with large slag inclusions that do not extend to the weld surfaces, causing no damage to the vessels. Hence, the practical relaxation of excessively conservative acceptance standards is discussed.

Copyright © 1987 by ASME
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