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    Environmental Design Criteria For a TLP In Cyclonic Conditions.

    Access Status
    Fulltext not available
    Authors
    Higgins, Stuart
    Hinwood, Jon
    Date
    1999
    Type
    Conference Paper
    
    Metadata
    Show full item record
    Citation
    Higgins, S. and Hinwood, J. 1999. Environmental Design Criteria For a TLP In Cyclonic Conditions. In: The Ninth International Offshore and Polar Engineering Conference, 30th May 1999, Brest, France.
    Source Title
    Proceedings of the Ninth (1999) International Offshore and Polar Engineering Conference Brest, France, May 30-June 4, 1999
    Source Conference
    The Ninth International Offshore and Polar Engineering Conference
    Additional URLs
    https://onepetro.org/ISOPEIOPEC/proceedings/ISOPE99/All-ISOPE99/ISOPE-I-99-042/24597
    ISBN
    1-880653-40-0
    ISSN
    1098-6189
    Faculty
    Faculty of Science and Engineering
    School
    Curtin University Oil and Gas Innovation Centre
    URI
    http://hdl.handle.net/20.500.11937/84025
    Collection
    • Curtin Research Publications
    Abstract

    For the first phase of this research a six degree of freedom frequency domain model of a Tension Leg Platform (TLP), which includes the effects of non-collinear wind, wave and current, has been developed to determine the extreme response and sensitivities of environmental input. The model includes the steady forcing effects due to current and wave interaction, wind and wave drift. The dynamic "effects include Morison type forces due to inertia and drag, spatially correlated wind and slowly varying wave drift. The response model is used to evaluate four limit states of a TLP, namely minimum and maximum tension, maximum offset and minimum airgap. The second phase of this research has developed a method to evaluate the return period of required response and then select the mostly likely combination of environmental parameters to aid in design screening. The technique combines the response model and Inverse First Order Reliability Method (FORM) through a non-linear optimization routine.

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