DNV-OS-C105
Structural design of TLPs - LRFD method
| Publication Date: | 1 July 2015 |
| Status: | active |
| Page Count: | 58 |
scope:
Scope and application
A TLP is usually applied for drilling, production and export of hydrocarbons. Storage may also be a TLP function.
The TLP unit should also be designed for transit relocation, if relevant.
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.
Requirements concerning riser systems are given in DNV-OS-F201.
In case of application of a catenary or taut mooring system in combination with tendons, reference is made to DNV-OS-E301. Combined effects of mooring system (e.g. backline moorings) and tendon systems should be properly accounted for in the design.
Requirements related to stability (intact and damaged) are given in Ch.2 Sec.5 for ULS condition and Ch.2 Sec.7 for ALS condition.
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