Prototype Testing

Each TLP tether system, although generically similar, is unique in detail and major components may require full or reduced scale prototype testing.

Representative tests are:

  • Tether couplings
    A problem identified in the case of tether couplings was to obtain a reliable in service inspection of the coupling threads using NDT methods. It was imperative that the couplings had sufficient design margins compared to the inspectable parts of the system. To this end these margins were verified by a series of 1/3 scale tests to investigate ultimate strength and fatigue life.
  • Anchor latch test
    Full scale load tests may be considered necessary on the anchor latch combining both axial load and deflection of the element in the anchor.
  • Cross load bearing
    The purpose of the test is to verify structural and functional behavior and to determine that fatigue life and wear resistance are adequate for the service life.
  • Flex elements
    In service, the flex elements have to withstand compressive loads due to the axial tether loads combined with shear loads due to varying displacement. Prototype testing at either (or both) small or full scale is needed to confirm the functional behaviour and integrity of the flex element.