MATERIAL SELECTION, WELDING, AND NONDESTRUCTIVE TESTING GUIDELINES FOR OFFSHORE MOBILE DRILLING UNITS

Offshore mobile drilling units are categorized according to three major areas of relative structural importance: secondary, primary, and special. Guidelines are presented which relate material selection to service temperature and toughness: included are ship steels and quenched and tempered steels for cold weather service. Toughness of electrogas and electroslag weldments are compared with conventional weldments. Comments are presented on the use of partial penetration weldments. The applicability of radiography, ultrasonics, and surface inspection techniques to offshore mobile drilling units, together with possible acceptance criteria are discussed.

• 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:
  • Alia, B L
  • Wheatcroft, M F
  • Null, C L
• 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. 345-362

Subject/Index Terms

• TRT Terms: Drilling ships; Inspection; Materials selection; Materials tests; Nondestructive tests; Offshore platforms; Steel; Structural design; Ultrasonic tests
• Uncontrolled Terms: Ship design
• Old TRIS Terms: Offshore platform design; Steel selection; Steel testing
• Subject Areas: Bridges and other structures; Marine Transportation; Materials;

Filing Info

• Accession Number: 00138251
• Record Type: Publication
• Source Agency: Offshore Technology Conference
• Report/Paper Numbers: V3, OTC 2647 Proceeding
• Files: TRIS
• Created Date: Sep 4 1976 12:00AM