Fuel treatment specialist Aderco on Friday (16 October) said it recently conducted two case studies relating to the stability of Very Low Sulphur Fuel Oil (VLSFO).
The study found the quality of some new low sulphur fuel oils currently supplied being of significant concern to ship owners, ship managers and operators.
One case study was based on a real-life incident from a shipowner and the second based on fuel samples collected from various customers, both being tested by an independent laboratory, it explained.
“The first case involved bunkers being lifted in Houston, Texas. Despite the parameters meeting ISO 8217, duly confirming the bunkers as being ‘normal’, as well as the GC-MS test detecting no chemicals present, the fuel classified by the independent laboratory was ‘3’ on the ASTM D4740 scale, indicating the fuel as being unstable,” said Idris Talib, Technical Surveyor at Aderco, Singapore.
“Furthermore, naphthalene, an aromatic hydrocarbon, was also detected in the fuel.
“Aderco’s Bad Fuel Procedure was immediately implemented and, thankfully, the vessel succeeded in consuming the fuel without any abnormal sludge precipitation or damage to machinery, thus avoiding off hire, de-bunkering and all that this entails.”
Fuel samples collected in the second case study underwent stability tests to determine the initial quality of fuels supplied, said Aderco.
Total Sediment Potential (TSP), Total Sediment Accelerated (TSA) and Existent Total Sediment (TSE) tests were first performed on the low viscosity fuels (<60° C) in order to ascertain the sludge precipitation potential.
A fuel with high TSP that exceeded more than four times the specification limit was subsequently chosen for further testing.
Following the use of an ADERCO additive, the TSP was reduced by more than 90% in addition to observing a considerable reduction in the TSA and TSE values.
“Even though these results show that fluctuations in low sulphur fuel oil quality and safety issues remain today real challenges for the global shipping industry, the ADERCO support and technical team will continue to afford every assistance and guidance to its customers in order to assist in keeping their vessels running,” assures Olivier d’Olne, Group Technical Director.
Photo credit: Aderco
Published: 20 October, 2020
Universal Alliance, BMS United, Digiland International, Goodwood Associates, Southernpec (Singapore), and Taigu Energy were involved in alleged circular fictitious trades of fuel oil during July 2015.
Bunker orders of ISO 8217:2010 spec LS 380 cSt 0.5% for Nord Gemini, Nord Titan, Ocean Rosemary, and Luzern were placed through global commodities trading and logistics house Trafigura Pte Ltd.
While Covid-19 concerns are important, Captain Rahul Choudhuri was quick to note this does not mean bunker fuel related issues have indeed disappeared from the shipping sector.
‘Therefore, representing the players of the Malaysian bunker industry, we sincerely hope that this matter can be refined and reconsidered immediately so that all parties benefit together,’ says communication.
Maureen Poh, a Director of Helmsman LLC, offers plain practical tips on the differences between US and EU Sanctions and shares some thoughts on what companies could do if they are potentially exposed to sanctioned entities.
‘We [Consort Bunkers] have the opinion that the bunker business in Singapore is not related to the widely reported earlier cargo commodity trading mishaps,’ company source tells Manifold Times.