VACUUM WELD TIGHTNESS INSPECTION METHOD FOR THE MARINE INDUSTRY, FINAL REPORT

The marine industry currently uses three weld tightness inspection techniques, viz., air, hydrostatic, and hose tests. All three procedures have serious accuracy problems when counterposed against newly developed test and materials standards. Thus, a more accurate and statutorily acceptable method, called the vacuum weld tightness inspection method, is developed and proposed. The new method essentially uses the principle of differential pressure (the same principle underlying the air, hydrostatic, and hose tests) but instead of increasing the tank pressure, a localized lowering of pressure in the vacuum chamber is induced. The equipment and procedures for carrying out the new inspection technique are described and illustrated.

  • Supplemental Notes:
    • Report
  • Corporate Authors:

    Wartsilla Marine, Inc., Vancouver

    British Columbia,   Canada 

    Lloyd's Register of Shipping

    71 Fenchurch Street
    London EC3M 4BS,   England 

    American Bureau of Shipping

    ABS Plaza, 16855 Northchase Drive
    Houston, TX  United States  77060

    Det Norske Veritas

    Grenseveien 92, Etterstad
    Oslo 6,   Norway 
  • Publication Date: 1989-8

Media Info

  • Pagination: Various p.

Subject/Index Terms

Filing Info

  • Accession Number: 00661865
  • Record Type: Publication
  • Source Agency: Maritime Technical Information Facility
  • Files: TRIS
  • Created Date: Jul 21 1994 12:00AM