Maintenance during DP operations leads to – DP undesired event

Comments from the report:

The oil level gauge was not reading the actual level.  The duty Engineer did not inform Bridge/DPO`s of maintenance on the header tank of stern thruster.  Future instruction was that the engine room would inform the bridge of scope of work of any maintenance to be carried out whilst the vessel was on DP operations.

Considerations of the IMCA Marine DP Committee from the above event:

  • IMCA stresses the importance of sound operational activity planning, full understanding by all key DP personnel of the activity specific operating guidelines (ASOG) would have assisted in managing the operation.
  • DP operations encompass the whole vessel and all personnel need to be trained as part of a team.
  • Standing orders should stress that no maintenance is undertaken during DP operations.
  • In exceptional circumstances and following a capability analysis maintenance could be considered. However, a permit to work (PTW) system should be used that involves and informs all departments.