Incorrect as-built drawing configuration
- Safety Flash
- Published on 28 January 2022
- Generated on 3 September 2025
- IMCA SF 03/22
- 1 minute read
A subsea asset’s actual jumper configuration differed from the data received from the client.
What happened?
During leak investigations at a subsea manifold, divers carried out intervention on the system in accordance with approved procedures based on information provided by the client.
It subsequently became apparent during fault-finding that the subsea asset’s actual jumper configuration differed from the data received from the client.
What went wrong?
Divers carried out intervention on a system which actually only had a single unproven barrier in place.
What was the cause?
Incorrect information was provided by the client.
Actions
- Work was stopped until it could be ascertained that the system was safe for further intervention.
- The client was alerted and conducted a thorough internal investigation. They could not pinpoint how the error occurred. The drawings were redone with the amendments in place and formally approved.
Related Safety Flashes
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IMCA SF 09/21
30 March 2021
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IMCA SF 09/17
3 May 2017
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IMCA SF 29/21
28 October 2021
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IMCA SF 23/16
13 September 2016
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IMCA SF 33/16
6 December 2016
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