Report of a Workshop on Requalification of Tubular Steel Joints in Offshore Structures. September 5-6, 1995. Houston, Texas.
Report of a Workshop on Requalification of Tubular Steel
Joints in Offshore Structures. September 5-6, 1995.
Houston, Texas.
(4313 K)
Taylor, A. W.
NISTIR 5877; 100 p. June 1996.
Sponsor:
Minerals Management Service, Herndon, VA
Available from:
National Technical Information Service
Order number: PB96-210760
Keywords:
steel joints; offshore platforms; systems engineering;
tubular joints
Abstract:
This report is a summary of a workshop titled
"Requalification of tubular Steel Joints in Offshore
Structures," held September 5 and 6, 1995 in Houston,
Texas. the workshop was sponsored by the U.S. Minerals
Management Service, and the National Institute of
Standards and Technology. This report contains the
papers presented at the workshop, a summary of the
workshop discussions, and the conclusions reached by the
workshop participants. The major issues discussed at
the workshop included tubular joint characterization,
computational methods, tubular joint failure
definition/condition, condition assessment, and code
requirements/technology transfer. Needed technology
developments included the following: improved methods
for describing analytically the monotonic and cyclic
behavior of joints, possibly through joint macro-models;
improved methods for predicting the tensile fracture
failure mode of joints; a coordinated effort to assess
the body of available experimental data on tubular
joints; investigation of elastic-plastic fracture
mechanics applications to joints; cost/benefit studies
prior to development of new analytical tools; a survey
to determine the most important failure modes of joints;
development of probabilistic approaches to condition
assessment of joints; methods for characterizing the
condition of new joints; improved methods for detecting
flaws in existing joints; studies of the necessary scope
and frequency of inspections of joints; improved code
provisions for rating the ultimate strength of joints;
improved code provisions for the use of actual steel
strengths in evaluating existing joints; code provisions
for evaluation of damaged joints; a definitive study of
can lengths in K-joints; improved classification schemes
for joints in terms of the ovalizing parameter a; and
methods of incorporating fracture mechanics into code
provisions.
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