UPS failure causes partial blackout
- DP Event
- Published on 29 March 2017
- Generated on 6 November 2026
- 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.
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.
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