Journal of Failure Analysis and Prevention

, Volume 12, Issue 2, pp 145–154 | Cite as

Metallurgical Assessment of Heads Containing ID Cracks on a Secondary Superheater Outlet Header

  • Hudson Wu
  • Ronald Pietrowski
  • Sebastian Tordonato
Case History---Peer-Reviewed
  • 59 Downloads

Abstract

During a routine plant outage, ID surface cracks were found on the two heads of a secondary superheater outlet header (SSHOH). The continued service of the SSHOH was dependent on a postmortem metallurgical assessment performed on the defective heads. The assessment techniques included visual and optical examination, oxide-scale crack dating, hardness measurement, materials identification, and multiple-heat parametric remaining creep life estimation. The assessment indicated that the ID surface cracks were formed at the very early stage of the header service, and the continued service of the header would not be compromised.

Keywords

Metallurgical assessment Superheater header ID cracks 

References

  1. 1.
    Metcalfe, E., Taylor, M.R., Broomfield, J.P.: Oxide dating for service failure investigations—an error assessment of the technique. Corros. Sci. 24(10), 871–884 (1984)CrossRefGoogle Scholar
  2. 2.
    Ellis, F.V., Hilton, S.O., Henry, J.F., Bynum, J.E.: Influence of service exposure on base and weld metal of 1/2Cr–1/2Mo–1/4V high-pressure steam inlet piping. In: The Joint Conference of the Pressure Vessels and Piping, Materials, Nuclear Engineering and Solar Division, 21–25 June 1981, DenverGoogle Scholar

Copyright information

© ASM International 2012

Authors and Affiliations

  • Hudson Wu
    • 1
  • Ronald Pietrowski
    • 2
  • Sebastian Tordonato
    • 1
  1. 1.Tordonato Energy Consultants, Inc.ChattanoogaUSA
  2. 2.Consolidated Edison Company of New York, Inc.New YorkUSA

Personalised recommendations