UPS failure causes partial blackout

  • DP Event
  • Published on 29 March 2017
  • Generated on 12 December 2024
  • DPE 01/17
  • 1 minute read

Undesired event

The failure of UPS No.1 and subsequent failure of the other equipment should have resulted in a DP yellow alert.

DPE 17.01 – UPS failure causes partial blackout – DP Undesired Event – Flowchart

Comments

One of the fans in UPS No.1 failed causing the UPS to overheat and shut down.

The fan has been replaced and the temperature alarm tested.

Considerations

  • The failure of UPS No.1 and subsequent failure of the other equipment should have resulted in a DP yellow alert.
  • With redundancy compromised the vessel needed to consider a move further away from the installation and out of the 500m zone.
  • Fans, filters and alarms should be adequately covered at component and sub system level by the vessel planned maintenance system.

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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