API RP2A LRFD PDF

Documents Similar To API RP 2A-LRFD – Offshore Platform Loading. Tubular Joint API RP 2A Design. Uploaded by. karanderohan. API RP 2A 21st – Joint. API RP2A-LRFD (load and resistance factor design) has recently been approved by the American Petroleum Institute for the design of fixed. API RP 2A-LRFD [ Withdrawn ]. Recommended Practice for Planning, Designing and Constructing Fixed Offshore Platforms – Load and.

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Partial factors are used to account explicitly for the variance of criteria, and can therefore be calibrated to provide more consistent safety levels. The issue of a load resistance factor design version reflects the worldwide trend away from working stress design to reliability based methods. But with the introduction of the LRFD methodology it has become possible to rationally account for the variance between US regional conditions and other localities.

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This paper does not discuss the very important but less quantifiable concepts of structural redundancy and the ability to redistribute loads from non-performing structural elements. This paper also discusses the different partial load factors applicable to gravity loads when improved accuracy of weight control is effected, and applicable to environmental load when yearor year return period extreme environmental criteria are used in the North Sea.

The effect on total structure weight and the differing effect on various categories of structural element are summarised. The designation ‘load resistance factor design’ derives from the concept of factoring both loads and resistances as opposed to the working stress design approach where only the resistance is divided by a factor of safety. Thomas BP Engineering R. The reliability of the Goodwyn ‘A’ substructure has been a major focus of the design and results are presented showing the platform reserve capacity, computed using non-linear inelastic ductility analyses.

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Application of API RP2A-LRFD to a North Sea Platform Structure – OnePetro

Publishers Content Coverage Privacy. Peer reviewed only Published between: Proceedings of an International Conference Submersible Technology: Publishers Content Coverage Privacy. Although rp2x differences exist between the WSD and LRFD versions, the two documents remain remarkably similar with the LRFD draft containing most of the carefully phrased clauses which are familiar to many practicing engineers.

The WSD methodology has been successfully applied lrtd without change within Europe and worldwide. LRFD however, is an improved approach to structural design which takes into account the possible uncertainties in the applied loads and component resistances. Proceedings of an international conference Diverless and Deepwater Techology: The study is based on work performed for Woodside as part of the substructure design for the Goodwyn ‘A’ Platform.

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Log in to your subscription Username. Rock Mechanics Symposium and 5th U. Proceedings of an international conference Subsea Controls and Data Acquisition ‘ This is achieved by providing a basic framework for design, accompanied by guidance on problem areas lying outside this framework. About us Contact us Help Terms of use. The work is confined to the in-place strength of the jacket and module support frame MSF. Proceedings of an international ep2a Oceanology: However is expected to see the publication of the Load and Resistance Factor Design version as an AP1-approved alternative.

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Proceedings of an international conference Diverless and Deepwater Techology: Proceedings of an international conference Oceanology: Its use in Europe is supplemented by additional local regulatory requirements and performance criteria but the designmethodology, basic code checking equation sand safety levels for ultimate strength are primarily related to API RP2A.

Advanced search Show search help. Log in to your subscription Username. Peer reviewed only Published between: Since it was first issued inthe working stress code RP2A Ref 2 has become an internationally accepted standard for fixed platforms. Proceedings of an International Conference Submersible Technology: Proceedings of an international conference Subsea Controls and Data Acquisition ‘ Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition.

Rock Mechanics Symposium and 5th U. As a reliability based alternative, the load resistance factor design LRFD method offers a more consistent aip to platform safety than does the existing RP2A working stress design WSD method.

These aspects assume increasing importance as element design is further refined. Offshore Technology Conference Disciplines 4. Sheriff’s Encyclopedic Dictionary of Applied Geophysics, fourth edition. To conclude, this paper makes the connection between the work reported here and the international effort to develop an ISO Standard for offshore structures, rp2s which partial factors appropriate to regional conditions will feature. Offshore Technology Conference Disciplines 4.