OFFSHORE STANDARD DNV-OS-C105 STRUCTURAL DESIGN OF TLPS (LRFD METHOD)

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OFFSHORE STANDARD DNV-OS-C105 STRUCTURAL DESIGN OF TLPS (LRFD METHOD)

Author: DET NORSKE VERITAS | Size: 0.3 MB | Format: PDF | Publisher: DET NORSKE VERITAS | Year: 2007 | pages: 29

301 A TLP is usually applied for drilling, production and export of hydrocarbons. Storage may also be a TLP function.
302 A TLP may be designed to function in different modes, typically operation and survival. Also horizontal movement (e.g. by use of catenary or taut mooring) of TLP above wells may be relevant. Limiting design criteria when going from one mode of operation to another shall be established.
303 The TLP unit should also be designed for transit relocation, if relevant.
304 For novel designs, or unproved applications of designs where limited, or no direct experience exists, relevant analyses and model testing shall be performed which clearly demonstrate that an acceptable level of safety can be obtained, i.e. safety level is not inferior to that obtained when applying this standard to traditional designs.
305 Requirements concerning riser systems are given in DNV-OS-F201.
306 In case of application of a catenary or taut mooring system in combination with tendons, reference is made to DNVOS-E301.
307 Requirements related to stability (intact and damaged) are given in Sec.6 for ULS condition and Sec.8 for ALS condition.

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