Rehabilitation of a 186-mile (299-km) petroleum products pipeline in southern Africa employed sleeve welding, reinstatement of external coatings, and upgrading of the cathodic-protection system. The pipeline had an unusual history in which the political environment of the region forced its shutdown for 17 years (1965-1982). This shutdown played a major role in its deterioration. The pipeline, which exhibited extensive internal and external corrosion, was a crucial supply route for imported refined products. So important was the line that during the entire repair project, the line could not be shutdown. This article provides further details on the condition of the pipeline in 1982, the original coatings and cathodic protection system, pipeline inspection, the repair program, the welding of external sleeves onto the live pipeline, the wrapping systems, the cathodic protection system, practical problems (personnel and equipment security, obtaining licenses, etc.), and hydrostatic testing. The pipeline is currently undergoing further upgrading in order to take increased pressure from new pumping stations. The feasibility of installing small cathodic protection booster stations at critical areas on the line is also under assessment.

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  • Corporate Authors:

    PennWell Publishing Company

    1421 South Sheridan, P.O. Box 1260
    Tulsa, OK  United States  74101
  • Authors:
    • Denney, A K
    • Coleman, S L
    • Pirani, R
    • Webb, N
    • Turner, P
  • Publication Date: 1995-1-9


  • English

Media Info

  • Features: Figures; Photos;
  • Pagination: p. 28-33
  • Serial:
    • Oil and Gas Journal
    • Volume: 93
    • Issue Number: 2
    • Publisher: PennWell Publishing Company
    • ISSN: 0030-1388

Subject/Index Terms

Filing Info

  • Accession Number: 00672565
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Jan 13 1995 12:00AM