Static Bend Stiffener
Static Bend Stiffeners are primarily for overbend protection during installation and overboarding. The BS is manufactured from moulded polyurethane elastomer specifically developed, qualified and tested over many years. It has a conical external profile with a central hollow cylindrical section which allows it to slide over the end of the riser.
Dynamic flexible risers, flowlines, power cable and umbilicals may be connected to rigid structures such as a subsea riser base or the turret exit of a floating production vessel. The presence of environmental loads will subsequently cause the 'riser' to flex about this fixed location. The flexing in combination with large axial loads may cause damage to the riser structure due to overbending and fatigue. An integral bending stiffener fitted to the riser end fitting will prevent structure damage due to overbending.
The static bend stiffener protects the umbilical adjacent to subsea terminations or field repair joints.
Advantage:
- Local stiffness added to the 'riser' adjacent to a rigid connection will limit bending stresses and curvature to acceptable levels
Our static bend stiffeners are typically 1 to 2 metres long with various interfaces to suit specific requirements.