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ASM Failure Analysis Case Histories

Handbook of Case Histories in Failure Analysis

Edited by
Khlefa A. Esaklul
Khlefa A. Esaklul
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ASM International
Volume
2
ISBN electronic:
978-1-62708-215-0
Publication date:
1993
Book Chapter

Mercury Liquid Embrittlement Failure of 5083-O Aluminum Alloy Piping

By
Jerome J. English
Jerome J. English
Occidental Chemical Corporation
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;
David J. Duquette
David J. Duquette
Rensselaer Polytechnic Institute
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Published:
1993
Page range:
207 - 213

Abstract

The failure mode of through-wall cracking of a butt weld in a 5083-O aluminum alloy piping system in an ethylene plant was identified as mercury liquid metal embrittlement. As a result of this finding, 226 of the more than 400 butt welds in the system were ultrasonically inspected for cracking. One additional weld was found that had been degraded by mercury. A welding team experienced in repairing mercury contaminated piping was recruited to make the repairs. Corrective action included the installation of a sulfur-impregnated charcoal mercury-removal bed and replacement of the aluminum equipment that was in operation prior to the installation of the mercury-removal bed.

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Jerome J. English, David J. Duquette, 1993. "Mercury Liquid Embrittlement Failure of 5083-O Aluminum Alloy Piping", Handbook of Case Histories in Failure Analysis, Khlefa A. Esaklul

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