Our bunker surveyors have always been equipped with yearly calibrated measuring tapes and oil thermometers (thermoprobe). Due to the newest amendments to The European Agreement concerning the International Carriage of Dangerous Goods by Inland Waterways (ADN2025), delivering inland navigation barges carrying residual oil products are no longer allowed to open tanks while product is inside.

In order to keep providing a fully independent quantity measurement of fuel inside delivering inland navigation barges,  we have invested in gastight portable Ullage Temperature Interface gauging devices (UTI). These are of course also calibrated annually.

Another important aspect of modern day bunkering is the Mass Flow Meter (MFM), which is a quantity measuring device that since 2026 is mandatory to use on bunker barges in the ports of Rotterdam and Antwerp-Bruges. Our surveyors are trained in understanding the working principle, as well as local legislation and most importantly assessing the criteria that must be met in order to ascertain an accurate MFM measurement. 

The cappuccino effect, clearly visible on our photo on the left is a method of bunker fraud that we still encounter on several occaissions per year during VLSFO or HSFO bunker operations. Our surveyors are trained in the early detection of cappuccino bunkers, gathering evidence and handling the outcome.

To insure that the barge drawn bunker samples are representative and original, our surveyors witness, counterseal and photograph the barge drawn samples. If fuel sample analysis by the receiving party reveals that the bunker fuel is off spec, our surveyors can witness the seal breaking of the original barge drawn bunker samples on request.