HSE Safety Alert - check your DP (dynamic positioning) systems ergonomics

20 December 2016

A Safety Alert from the UK offshore regulator advises DP users to check their systems. The Alert follows rapid loss of station by a semi-submersible drilling rig when its DP system was unknowingly disengaged. Two separate issues of poor design ergonomics resulted in the crew taking much longer than expected to detect the error, by which time there had been an emergency disconnect, including shearing of the riser.