Guideline of Weld Overlay Repair Method for Primary Piping of Japanese Boiling Water Reactors

Haruo Fujimori, Eisaku Hayashi, Yuichi Motora, Hitoshi Ohata and Hideo Sakurai

[+] Author Affiliations

Haruo Fujimori, Eisaku Hayashi

Hitachi, Ltd., Hitachi, Ibaraki, Japan

Yuichi Motora

Toshiba Corporation, Yokohama, Japan

Hitoshi Ohata

Japan Atomic Power Company, Tokyo, Japan

Hideo Sakurai

Tokyo Electric Power Company, Fukushima, Japan

Paper No. PVP2006-ICPVT-11-93690, pp. 421-427; 7 pages
doi:10.1115/PVP2006-ICPVT-11-93690

From:

ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
Volume 1: Codes and Standards
Vancouver, BC, Canada, July 23–27, 2006
Conference Sponsors: Pressure Vessels and Piping Division
ISBN: 0-7918-4752-7 | eISBN: 0-7918-3782-3
Copyright © 2006 by ASME

Abstract

abstract

A private guideline of a weld overlay (WOL) repair method for SCC cracked Boiling Water Rector (BWR) primary piping was provided by Thermal and Nuclear Power Engineering Society of Japan. In the WOL method, the overlaid structure of SCC resistant 308L weld metal substitutes for cracked existing piping weldments as pressure boundary. The guideline prescribes the applicability, welding conditions and essential variables, weld overlay structural design, evaluation of welding effects to the piping system, in-process control, post-process examination, and procedures of pre-service and in-service inspection.

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Fujimori H, Hayashi E, Motora Y, Ohata H, Sakurai H. Guideline of Weld Overlay Repair Method for Primary Piping of Japanese Boiling Water Reactors. ASME. ASME Pressure Vessels and Piping Conference, Volume 1: Codes and Standards ():421-427. doi:10.1115/PVP2006-ICPVT-11-93690.

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Guideline of Weld Overlay Repair Method for Primary Piping of Japanese Boiling Water Reactors

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