Incident caused by human factors

  • DP Event
  • Published on 28 September 2020
  • Generated on 8 September 2026
  • DPE 03/20
  • 1 minute read

Incident

Complacency or lack of knowledge with DP redundancy was listed as the cause of this incident.

DPE 20.03 – DP incident caused by human factor – Flowchart

Comments

It is mentioned in the report that DG#4 tripped out for unknown reasons. Elsewhere in the report the cause of this incident is mentioned as complacency or lack of knowledge with DP redundancy concept.

Considerations

  • The set-up of the PRS was such that the DGNSS had the majority of the “PRS Weight” calculation in the DP controller, which is not recommendable.
  • When a fuel filter differential pressure alarm is received, ensure that the correct procedures for filter changeover and filter replacement are carried out as soon as reasonably practicable. Always ensure that standby diesel generator is checked to ensure continuous service.
  • The excursion was 3.1m but it should be noted that this is 10% of the water depth and could have been critical depending on the industrial mission.
  • There is no mention of the DP watch circle in the report. It is particularly important that an Activity Specific Operating Guidance (ASOG) document is compiled and utilised for all DP operations, in accordance with IMO Circular 1580, chapter 4, see Operational Activity Planning (IMCA M220).

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The case studies and observations above 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 technical crew.

IMCA makes every effort to ensure both the accuracy and reliability of the information, but it is not liable for any guidance and/or recommendation and/or statement herein contained.

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