ASM Failure Analysis Case Histories: Power Generating Equipment
Failure Investigation of Longitudinal Seam Welded Elevated Temperature Header
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Published:2019
Abstract
As the result of a leak detected in a plate-formed header at PENELEC'S Shawville Unit No. 3, an extensive failure investigation was initiated to determine the origin of cracking visible along the longitudinal weld seam. Fabricated from SA387-D material and designed for a superheater outlet temperature of 566 deg C, the 11.4 cm thick header had operated for approximately 187,000 h at the time of the failure. Discussion focuses on the results of a metallographic examination of boat samples removed from the longitudinal seam weldment in the vicinity of the failure and at other areas of the header where...
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Member Sign InJ. F. Henry, F. V. Ellis, J. Alice, J. K. LaFontaine, P. C. Orban, Failure Investigation of Longitudinal Seam Welded Elevated Temperature Header, ASM Failure Analysis Case Histories: Power Generating Equipment, ASM International, 2019, https://doi.org/10.31399/asm.fach.power.c9001669
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