Lloyd’s Register Fuel Oil Bunkering Analysis and Advisory Service (FOBAS) on Friday (10 June) released a bulletin to alert shipowners of high water content found in some VLSFO bunker fuel samples from Singapore:
10 June 2022
Recently FOBAS has tested a number of VLSFO samples from Singapore that exceeded the 0.50%v/v limit for Water as stipulated in the ISO 8217:2017 specification. The fuels had water ranging between 0.65 to 1.90 %v/v.
Water at these levels would be expected to be manageable during effective onboard treatment, however would still be a concern and would also have commercial implications.
If high water is found in a bunker fuel, then further samples should be taken from the top, middle and bottom of the respective bunker tank(s) to determine the distribution of water through the tank. Further to this, samples should also be taken from before and after the purifier to determine the reduction of water to acceptable levels (0.20%v/v) before engine entry.
Any carry over of water into the engine fuel rail has potential to cause damage to the fuel pumps, injectors and cylinder components as well as possible turbo charger surging and fouling.
If your ships are planning to bunker in Singapore then we suggest that the supplier is asked to provide a certificate of quality of the particular stem to ensure that the water concentration is known at the time of bunkering and within the limits of stipulated grade. Particular attention should be given to the collection of a fully representative drip samples ensuring all supporting documentation and samples drawn are witnessed and signed for by all parties present.
If you like to discuss this further, then please feel free to get in touch with us via email [email protected].
Photo credit: Louis Reed from Unsplash
Published: 13 June, 2022
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