As IMCA informs, in a recent incident divers were carrying out investigation on a leak at a subsea manifold, when they discovered a difference in the jumper configuration data.
The incident
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.
Probable cause
Divers carried out intervention on a system which actually only had a single unproven barrier in place, and established that the incident was due to incorrect information was provided by the client.
Actions taken
- 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.
