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DP event investigation and testing inside the 500m zone – DP incident

Comments:

The report concluded that the vessel should have proceeded out of the 500m zone to a safe area prior to investigating the fault and conducting tests.

Considerations from the above event:

  • There is no doubt that in circumstances such as this, where investigation and testing is required following a DP event, it should be conducted in a safe location and as a minimum outside the 500m zone.
  • The DP system’s level of redundancy always needs to be considered during investigation and testing.
  • It is not evident from the report, but it is wondered whether complacency contributed to this bad practice.
  • The original reported DP alarm should have resulted in a DP yellow alert.
  • The vessel might have considered using the independent joystick (IJS) rather than individual levers.
  • Emergency handling of the vessel should be practised on a regular basis.

 

DP Event

Published: 29 March 2017
Download: IMCA DPE 01/17

Classification:
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The following case studies and observations have been compiled from information received by IMCA. All vessel, client, and operational data has been removed from the narrative to ensure anonymity.

Case studies are not intended as guidance on the safe conduct of operations, but rather to assist vessel managers, DP operators and DP technical crew in appropriately determining how to safely conduct their own operations. Any queries should be directed to IMCA at dpreports@imca-int.com. Members and non-members alike are welcome to contact IMCA if they have experienced DP events which can be shared anonymously with the DP industry.

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