Effect of adjacent safe end to piping weld and preemptive weld overlay repair on residual stresses on nozzle to safe end weld

Tae Kwang Song, Yun Jae Kim, Yun Bae Chun, Chang Yong Oh, Hong Yeol Bae, Kyoung Soo Lee, Chi Yong Park

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study, simplified nozzle geometry was proposed to quantify the effects of adjacent similar metal weld and weld overlay on residual stresses in dissimilar metal weld. Finite element analyses were conducted with various thickness ratios and safe end lengths and corresponding residual stresses were provided. According to the results, residual stresses in dissimilar metal weld were improved after adjacent similar metal welding. The effect of similar metal welding is more evident with shorter length of safe end. Thus, short length of safe end was recommended for new design of nozzle. Appropriate thickness of preemptive weld overlay reduces the conservative thickness recommended by ASME Code.

Original languageEnglish
Title of host publicationProceedings of the ASME Pressure Vessels and Piping Conference 2009 - Materials and Fabrication
Pages425-433
Number of pages9
EditionPART A
DOIs
Publication statusPublished - 2010
Event2009 ASME Pressure Vessels and Piping Conference - Prague, Czech Republic
Duration: 2009 Jul 262009 Jul 30

Publication series

NameAmerican Society of Mechanical Engineers, Pressure Vessels and Piping Division (Publication) PVP
NumberPART A
Volume6
ISSN (Print)0277-027X

Other

Other2009 ASME Pressure Vessels and Piping Conference
CountryCzech Republic
CityPrague
Period09/7/2609/7/30

ASJC Scopus subject areas

  • Mechanical Engineering

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