In Line Heave Compensation
TENSA are the heave compensation specialists! We provide a range of heave compensation solutions to suit your specific application. These include winches, inline deck mounted systems, subsea passive heave compensators and surface inline passive heave compensators.
The TENSA in Line Subsea Passive Heave Compensators (SPHC) are used to provide compliant support to a load suspended from a crane or winch on a heaving vessel. This capability is used in the following situations:
- supporting a load which is held stationary on the seabed from a heaving vessel
- limiting the motion and landing velocity of a load lowered onto a stationary support (eg seabed or fixed platform) ..
- to minimize load variations (reduce DAF) when lowering an object through the wave zone
- to maintain tension in a fixed line from a vessel to seabed eg guidewire or umbilical
Designs are in accordance with API spec 2C Specification for Offshore Cranes and other relevant API and AS codes covering the mechanical construction. Purchasers may request design and fabrication approval from DnV, ABS or other recognised certification organisation. The Tensa SPHC series are modular and can be adapted quickly to different strokes and operating conditions. 2 units can be used in parallel to double the capacity or in series to double the stroke. Additional accumulators can be added to further improve the operating performance for extreme conditions.
TENSA also offers a range of in line surface passive heave compensator systems. The capability is used in the following situations:
- supporting a load which is held stationary on the seabed from a heaving vessel (locked-to-bottom operation)
- limiting the motion and landing velocity of a load lowered onto a stationary support (e.g. seabed or fixed platform).
- to minimize load variations (reduce DAF) when lowering an object through the wave zone
- to maintain tension in a fixed line from a vessel to seabed e.g. guide wire or umbilical
- limiting dynamic line loads when towing
The TENSA PHC series are modular and can be adapted quickly to different strokes and operating conditions. 2 units can be used in parallel to double the capacity or in series to double the stroke. Additional accumulators can be added to further improve the operating performance for extreme conditions.
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