ABS updates requirements for dynamic positioning systemsNews // February 28, 2013
With the use of dynamic positioning (DP) systems increasing among major offshore clients, ABS has released an updated Guide for Dynamic Positioning Systems as a significant update to present classification requirements.
The new Guide features the new enhanced system (EHS) notation that encourages robust designs of DP systems by providing optional requirements. The multiple levels of the EHS notation – for power, control and fire protection – provide owners with the flexibility to tailor the notation to the most important components of the system for the unit’s intended operations.
“The use of DP systems has been expanded not only in terms of the number of vessels outfitted with the systems, but also in the increasing advancement of DP technologies,” said Ken Richardson, ABS Vice President, Energy Project Development.
Because these newbuilds will work around the globe, the ABS DP Guide offers an optional notation for stationkeeping performance (SKP). The notation allows owners to select equipment based on North Sea conditions or to select environmental criteria specific to the intended areas of operation.
The DP Guide also includes detailed procedures for assessing available thrust, taking into account thruster interactions (including thruster-thruster, thruster-hull and thruster-current), which is especially useful in the early stages of design.