Bunker barges fitted with a flow meter should be checked for proper functioning by sighting a valid calibration certificate and ensuring the seal is intact.
There may also be unauthorised piping (by-pass lines) fitted to the flow meter running into the pump suction side and thus this un-authorised contraption will register the throughput of fuel twice through the flow meter.
Verify flow meter seal is intact
Verify validity of the calibration certifcate and that it is for the same type flow meter
Look out for any suspicious by-pass lines running after the flow meter
Consult the barge piping diagram if in doubt
Remember whenever in doubt or have concerns always issue a letter of protest
Kaivan H. Chinoy is the Founder and Principal Marine Surveyor of AVA Marine Group, owners of Petro
Inspect and The Bunker Detectives.