PLATFORM ASSESSMENT AND REQUALIFICATION BASED ON HISTORIC DESIGN CODES FOR STRENGTH OF TUBULAR JOINTS

This paper examines the design requirements relating to the ultimate capacity of tubular joints in the American Petroleum Institute (API) RP2A codes and the US Health and Safety Executive Guidance Notes together with an associated study on the screening of the relevant database. The examination considers the specific clauses, the strength formulae, the validity limits, and the supporting data and the associated screened database. The change of design provisions is presented in historic terms based on results of a comparative study on the calculated design strength of joints with T/Y, X and K configurations according to the recommendations given by the appropriate codes from the early 1970s to the current 20th edition of API RP2A and 4th edition of HSE Guidance Notes. Results of parametric sensitivity studies on a number of practical joint configurations are presented. The results of this study reveal various degrees of conservatism and unconservatism inherent in the design of tubular joints using the early editions of the API code, with respect to the design based on the provisions given in the 20th edition. A number of inconsistencies and uncertainties associated with the two design codes (API RP2A and HSE Guidance Notes) are identified. Implications for platform assessment/requalification based on these codes are discussed.

  • Supplemental Notes:
    • OMAE 1995, 14th Intl Conf on Offshore Mechanics & Arctic Engng; 18-22 June 1995; Copenhagen, Denmark. Sponsored by ASME et al. Procs. Publ by ASME, ISBN 0-7918-1308-8. Vol II, p 261 [10 p, 10 ref, 6 tab, 4 fig]
  • Authors:
    • Ma, A
    • Tahan, N
  • Publication Date: 1995

Language

  • English

Subject/Index Terms

Filing Info

  • Accession Number: 00718623
  • Record Type: Publication
  • Source Agency: British Maritime Technology
  • Files: TRIS
  • Created Date: Mar 27 1996 12:00AM