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Meter Calibration onboard at Invergordon Port

Customer Issue

A northern port service company contacted Stream measurement for a job on a 4” Oval FU-II fuel mechanical meter in-situ testing and potential meter calibration on the supply line to tank in the Geoquip Saentis Drilling ship, that was docked in Invergordon port.

The job was a request by their customer in Mexico where the ship was planned to sail in 6 days time from the request for work, requiring a quick turnaround in response time to avoid delays.


We were able to have our service engineer arrive onsite before the departure date and meet with the Chief engineer to plan the job, the customer requested a one point test repeating 3 times for a repeatability check using our Master Meter (RM1) that is specified for oil measurement which was driven up in our service van and then lifted on board via crane to access the meter.

The chief engineer selected a test point into the pipework up and downstream from the meter using our 4″ to 2″ reduction flanges to divert the flow from the meter to the RM1, then back to the storage tank.


After testing it was found that the Meter was within the customers tolerance levels of +/- 1%, and no further adjustment was required. After the meter calibration check had been completed Stream were able to provide a calibration certificate to the customer. This allowed the smooth departure of the vessel without delay on its way to it’s next destination in Mexico.