CATHODIC PROTECTION EXPERIENCE IN COOK INLET, ALASKA

Amoco Production Company operates four of fourteen platforms in the Cook Inlet of Alaska. Amoco's ten years of underwater corrosion and cathodic protection experience in the Cook Inlet environment are reviewed. Tests show that 90-100 ma/ sq. ft. are necessary to polarize the Cook Inlet structures where high tidal velocities are prevalent. Further, impressed current densities of 60 ma/sq. ft. maintain the cathodic protection as evidenced by the presence of a cathodic scale in the lower portions of the splash zone of the structure legs. An underwater corrosion coupon program was run to verify underwater protection and effects of structure shielding are described. Field data on protection are also confirmed by laboratory data.

• Supplemental Notes:
  • Presented at the Eighth Annual Offshore Technology Conference, Houston, Texas, May 3-6, 1976.
• Corporate Authors:

  Offshore Technology Conference

  6200 North Central Expressway
  Dallas, TX  United States  45206
• Authors:
  • Barrett, S L
  • Taylor Jr, J M
• Conference:
  • Presented at the Eighth Annual Offshore Technology Conference, Houston, Texas, May 3-6, 1976.
• Publication Date: 1976-5

Media Info

• Features: References;
• Pagination: p. 977-986

Subject/Index Terms

• TRT Terms: Cathodic protection; Corrosion; Corrosion protection; Offshore drilling platforms; Offshore platforms
• Old TRIS Terms: Offshore platform corrosion
• Subject Areas: Bridges and other structures; Marine Transportation;

Filing Info

• Accession Number: 00138275
• Record Type: Publication
• Source Agency: Offshore Technology Conference
• Report/Paper Numbers: V3, OTC 2700 Proceeding
• Files: TRIS
• Created Date: Sep 4 1976 12:00AM