DP trial leads to partial blackout
- DP Event
- Published on 29 November 2016
- Generated on 17 September 2025
- DPE 04/16
- 1 minute read
Undesired event
The 230v supply breaker was open and the two uninterruptible power supply (UPS) batteries completely discharged.
Comments
It was discovered that the 230v supply breaker was open and the two uninterruptible power supply (UPS) batteries completely discharged.
Warning alarms generated by the DP system regarding the condition of UPS 2 were overlooked. An additional checklist item was added to the field arrival trials to check UPS 1, 2 and 3 are clear of alarms and operating as normal.
Vessel maintained position throughout.
Considerations
- The lessons to be learnt from the above are obvious and barriers preventing such errors are essential.
- Alarms presented to operators must be acknowledged and acted on.
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