Weak link arrangement and a method comprises a weak link arrangement
AssigneeAker Solutions AS
InventorsBjørn PAULSHUS, Sigvard OMVIK
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AssigneeAker Solutions AS
InventorsBjørn PAULSHUS, Sigvard OMVIK
Estimating the term…
A weak link arrangement (1) designed for location on an umbilical (6, 7) extending on the seabed between respective structures potentially subjected to environmental hazards, like being snapped by an iceberg, which umbilical includes communicating fluid pipes and electric cables, is described. The weak link arrangement (1) includes a seabed frame (2) supporting an umbilical having a weak link multiconnecting structure (3) (UTA) installed in line, which weak link multiconnecting structure (3) (UTA) ensures continuous communication through the fluid pipes and electric cables until emergency disconnection takes place. Such disconnection is initiated by accidental pull in the umbilical, which pull activates disconnecting means and cable severing means.
A weak link arrangement designed for location on an umbilical extending on the seabed between respective structures potentially subjected to environmental hazards, which umbilical includes communicating fluid pipes and electric cables, the weak link arrangement includes a seabed frame supporting an umbilical having a weak link multiconnecting structure (UTA) installed in line, which weak link multiconnecting structure (UTA) ensures continuous communication through the fluid pipes and electric cables until emergency disconnection takes place, which disconnection is initiated by accidental pull in the umbilical, which pull activates disconnecting means and cable severing means, the pull activates the disconnecting means as a first disconnecting step and the cable severing means as a second disconnecting step, wherein the disconnecting means includes a shear pin designed to shear off and initiate UTA motion at a predetermined pull force in the umbilical, which shear pin is arranged between the weak link multiconnecting structure (UTA) and the seabed frame, which seabed frame further includes a bar arranged to stop the initiated motion, which stop initiates the first disconnecting step.
The weak link arrangement according to claim 4, wherein the release arm is arresting said the release handle in a notch until a motion between the umbilical with the connector and the weak link multiconnecting structure, which is stopped, takes place, which motion brings the release handle out of the notch and releases the clamp connector, which connector falls off.
Dependencies are inferred from the claim text.