Check of the UPS led to loss of power
- DP Event
- Published on 2 November 2017
- Generated on 26 August 2025
- DPE 04/17
- 1 minute read
Incident
Maintenance needs to be carefully managed during DP operations and avoided whilst the vessel is operating on DP.
Comments
-
At approximately 15:55, the ETO came to the bridge and asked the Senior DPO permission to enter the electronics room to check the UPS batteries.
-
The SDPO gave permission, not knowing the detailed work scope of the ETO.
Considerations
- Both planned and unplanned work on DP equipment should be subject to a permit to work system.
- Maintenance routines need to be carefully managed during DP operations and planned maintenance of any DP equipment should be avoided whilst the vessel is operating on DP.
Latest DP incidents
-
Always be prepared – Erroneous relative GPS heading input jeopardises follow target operations
Always be prepared – Erroneous relative GPS heading input jeopardises follow target operations
DPE 02/25
1 August 2025
Incident
-
Printer compatibility
This undesired event occurred on a DP Class 3 drillship, whilst operating in open bus configuration and undertaking drilling operations.
DPE 02/25
1 August 2025
Undesired event
-
Inadvertent act causes loss of DP, once again!
While vessel was recovering scrap metal using an ROV and crane, an alarm was triggered, but the DPO could not silence it
DPE 02/25
1 August 2025
Incident
-
Beware the solitons
An equipment class 2 pipelay vessel was engaged in pipelay operations in an area known for solitons
DPE 02/25
1 August 2025
Undesired event
-
DP drill scenario
DP emergency drill scenarios are included to assist DP vessel management and DPOs / Engineers and ETOs to conduct DP drills onboard.
DPE 02/25
1 August 2025
Drill Scenario
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.
Any queries should be directed to DP team at IMCA. Share your DP incidents with IMCA online. Sign-up to receive DP event bulletins straight to your email.