Examination of Cooper-Nickel Seawater Piping Removed from USS VINCENNES (CG-49) during Post-Shakedown Availability (PSA)

Abstract

A failure analysis was conducted on several specimens of 90-10 copper-nickel seawater piping removed from USS VINCENNES (CG-49). Aspects such as erosion-corrosion, sulfide corrosion and microbiologically induced corrosion (MIC) were investigated. Erosion corrosion due to turbulence was considered to be the main cause of damage to the piping. This type of attack was usually located within 12 inches downstream of a turbulence causing component such as an orifice or a butterfly valve. MIC and sulfide induced corrosion were both implicated in the analysis, but were not proven. Stress-enhanced corrosion was also implicated in the attack of fittings which were not in the fully annealed condition.

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Document Details

Document Type
Technical Report
Publication Date
Jan 28, 1987
Accession Number
ADA178807

Entities

People

  • Norman J. Clayton

Tags

Communities of Interest

  • Ground and Sea Platforms

DTIC Thesaurus Topics

  • Chemical Synthesis
  • Chemistry
  • Copper Nickel Alloys
  • Failure Analysis
  • Fittings
  • Flow Rate
  • Grain Growth
  • Joints
  • Lepidoptera
  • Materials
  • Navy
  • Nickel Alloys
  • Uss Bunker Hill
  • Uss Valley Forge
  • Uss Vincennes
  • Uss Yorktown
  • Welded Joints

Readers

  • Fluid Mechanics and Fluid Dynamics.
  • Materials Science and Engineering.
  • Naval Architecture and Marine Engineering.