Standards › Pipelines

DNV-RP-F109

On-bottom stability design of submarine pipelines

DNV-RP-F109 covers the stability of a subsea line on the seabed under wave and current loading. Ask Deckhand to check it and get the required submerged weight and the utilisation.

Run it on Open Deck On-bottom stability calculator

What you can ask it to do

  • Work out hydrodynamic loads on a pipeline from a sea state and current and the submerged weight it needs.
  • Run the absolute-stability and the generalised (allowed-displacement) checks.
  • Report the stability utilisation and the concrete-coating or weight needed to pass.

Related standards

DNV-RP-F109 On-bottom stability Hydrodynamic loads Submerged weight

Part of Subsea, Pipelines & Integrity · see the platform engine

Questions

What is on-bottom stability?

Whether a subsea pipeline stays put on the seabed under wave and current loads, rather than being lifted or pushed sideways. DNV-RP-F109 is the recommended practice for designing it.

What drives the result?

The sea state and current, the pipe's submerged weight (including any concrete coating), the seabed friction, and the allowed displacement. Deckhand reports which governs and the utilisation.

Do you size the concrete coating?

Yes — Deckhand can report the submerged weight, and hence the coating, required to bring the stability utilisation within the criterion.

Run DNV-RP-F109 on your own inputs

Open Deck is free — bring your numbers and check the result against your own methods.

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