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Bunker Flash: Chemical contaminants in fuels from ARA Region

CTI-Maritec obtained feedback from vessels encountering rapid wear on fuel pumps on main propulsion engines and increased deposit formation in the exhaust system.

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Marine fuel testing and marine surveying business Maritec Pte Ltd (CTI-Maritec) on Tuesday (5 July) issued an alert regarding presence of chemical contaminants in ARA region bunkers and its effects on fuel pumps and exhaust system. 

Maritec has tested several VLSFOs delivered in the ARA region to be observed with the presence of chemical contaminants in the recent months. These VLSFOs also indicated elevated potassium content and acid number.

From these samples, CTI-Maritec has obtained feedback from vessels encountering rapid and excessive wear on fuel pumps on main propulsion engines and a tendency for increased deposit formation in the exhaust system.

Bunker Flash: Chemical contaminants in fuels from ARA Region

Figure 1: Exhaust grid fouling

Bunker Flash: Chemical contaminants in fuels from ARA Region

Figure 2: Turbocharger Nozzle Ring fouling

Bunker Flash: Chemical contaminants in fuels from ARA Region

Figure 3: Fuel Pump Plunger wear down

Forensic analysis by Gas Chromatography and Mass Spectrometry techniques, specifically ASTM D7845 GC/MS and Solid Phase Extraction (SPE) GC/MS, on some of the samples revealed the presence of the following compound groups at abnormally high concentrations

  • Fatty Acids and Monoglycerides (>1000ppm)
  • Alkylresorcinols (>2000ppm)
  • Phenolic compounds (>1000ppm)

Fatty acids and Monoglycerides are acidic compounds commonly found in fuels where the FAME content has broken down in the presence of water and have known to cause costly accelerated wear in fuel oil injection pumps. The presence of these compounds can also suggest an inclusion of substandard Bio-fuels into the blend. This also explains the high potassium content in the fuel as Potassium Hydroxide (KOH) is one of the possible catalysts used in the production of bio-diesel. The separation of the spent catalyst out from the final product is a complicated and expensive process. The increased potassium can also contribute towards the total ash forming tendency of the fuel leading to abnormal deposit formation in post combustion exhaust system components.

The presence of Alkylresorcinols and phenolic compounds suggests the inclusion of shale oil which is allowed as per the definition of ‘petroleum fuel’ in ISO 8217 standards. CTI-Maritec’s experience however has shown that the presence of these compounds tends to cause fuel instability leading to issues like filter blockages and purifier bowl overloading. This is despite the Total Sediment potential tests being within specification. Any sludge not capable of being removed by the fuel treatment system can cause combustion issues in the main engine.

If your vessel is expected to bunker in the ARA region; CTI Maritec advises to check the pre-bunkering certificate of quality or Manifold sample test results for signs of abnormally high potassium content (>110ppm) and/or high total acid number (>1.5mgkoh/g) and pre-emptively analyze the bunker fuels by Gas Chromatography and Mass Spectrometry (GC-MS) that can reveal the presence of undesirable compounds in the fuel thus safeguarding vessel operations.

In every case, CTI Maritec urges bunker fuel receivers to ensure thorough attention is given to the witnessing of correct sampling procedures during bunkering, counter-sealing and recording of seals in the bunker delivery note and any other documentation required to ensure correct representative samples are obtained during the bunkering process.

Collecting objective evidence on the storage, treatment and usage of the fuel is to be always given a high priority in the event an operational problem occurs to determine if the fuel used was one of the root causes for a machinery failure.  

This document however does not reflect on the overall quality of fuel being supplied at ARA region.

The presence of off-spec marine fuels at the ARA region has been detected since late June:

Related: FOBAS: Off Specification Sediment (TSP) Fuels from ARA (Amsterdam, Rotterdam, Antwerp) Region
Related: FOBAS: Contaminated Fuels from ARA (Amsterdam, Rotterdam, Antwerp) Region

 

Photo credit and source: CTI-Maritec
Published: 6 July, 2022

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Events

Singapore bunker firms band together to support 900 people of low-income groups

Cathay Marine Fuel Oil Trading, Trilogy Petroleum and Seven Seas Oil Trading were amongst sponsors for an event, spreading joy to 900 people from low-income groups and elderly communities.

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In the spirit of Chinese New Year, several bunkering companies in Singapore came together to support a Community Outreach Programme organised by Living Hope Evangelism by sponsoring an event on Saturday (15 February).

About 900 people from low-income groups and elderly in communities were treated to lunch, gift vouchers and souvenirs at the Bliss Garden Restaurant, Singapore Expo.

The guest of honour at the event was Mr Eric Chua, Senior Parliamentary Secretary for Culture, Community and Youth & Social and Family Development, while the special guest was Ms Tin Pei Ling, Adviser to MacPherson GROs.

Cathay Marine Fuel Oil Trading Pte Ltd, Trilogy Petroleum Pte Ltd and Seven Seas Oil Trading Pte Ltd were amongst sponsors for the event.

Trilogy Petroleum, is the exclusive agent for Singapore bunker supplier Cathay Marine Fuel Oil Trading Pte Ltd and bunker trader, Seven Seas Oil Trading Pte Ltd.

“Acts 20:35; it is more blessed to give than to receive,” shared Alex Ow Yong, PBM, BBM, Chairman of Trilogy Petroleum. “Giving always make you feel better than receiving.”

“Thumbs up to all the sponsors and well-wishers for their love, generosity, and kindness. Kudos to those who showed kindness to others, by giving and sharing freely, and by caring for people!”

A gallery containing highlights of the event is below:

Photo credit: Living Hope Evangelism
Published: 17 February 2025

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Bunker Fuel

Singapore: Bunker fuel sales down by 9.1% on year in January 2025

4.46 million mt of various marine fuel grades were delivered at the world’s largest bunkering port in January, a drop from 4.91 million mt recorded during the similar month in 2024, according to MPA data.

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Singapore: Bunker fuel sales down by 9.1% on year in January 2025

Sales of marine fuel at Singapore port decreased by 9.1% on year in January 2025, according to Maritime and Port Authority of Singapore (MPA) data.

In total, 4.46 million metric tonnes (mt) (exact 4,461,710 mt) of various marine fuel grades were delivered at the world’s largest bunkering port in January, a drop from 4.91 million mt (4,906,100 mt) recorded during the similar month in 2024.

Deliveries of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in January (against on year) recorded respectively 1.66 million mt (zero from 1.66 million mt), 2.43 million mt (-15% from 2.86 million mt), 900 (+100% from zero), 3,100 mt (-77% from 13,500 mt) and zero (from zero).

Singapore: Bunker fuel sales down by 9.1% on year in January 2025

Bio-blended variants of marine fuel oil, low sulphur fuel oil, ultra low sulphur fuel oil, marine gas oil and marine diesel oil in January (against on year) recorded respectively 16,000 (+100% from zero), 92,000 mt (+103% from 45,300 mt), zero (from zero), zero (from zero) and zero (from zero).

LNG and methanol sales were posted respectively at 6,600 mt (-36.5% from 10,400) and zero (from zero).

A complete series of articles on Singapore bunker volumes by Manifold Times in 2024 can be found below:

Related: Singapore: Bunker fuel sales down by 5.2% on year in December 2024
Related: Singapore: Bunker fuel sales gain by 4.6% on year in November 2024
Related: Singapore: Bunker fuel sales gain by 10.8% on year in October 2024
Related: Singapore: Bunker fuel sales continue to increase by 2.8% on year in September 2024
Related: Singapore: Bunker fuel sales increase by 7.2% on year in August 2024
Related: Singapore: Bunker fuel sales up by 3.3% on year in July 2024
Related: Singapore: Bunker fuel sales gain 8.7% in June 2024
Related: Singapore: Bunker fuel sales increase by 6.7% in May 2024
Related: Singapore: Bunker fuel sales down by 0.6% on year in April 2024
Related: Singapore: Bunker fuel sales increase by 6.4% on year in March 2024
Related: Singapore: Bunker fuel sales up by 18.8% on year in February 2024
Related: Singapore: Bunker fuel sales up by 12.1% on year in January 2024

 

Photo credit: Maritime and Port Authority of Singapore
Published: 14 February, 2025

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Bunker Fuel

Singapore-based Straits Bio-LNG aims to deliver 250,000 mt of bio-LNG bunker fuel per year

Firm is currently in advanced stage of testing breaking down Empty Fruit Bunch through an established biological process with high enzyme concentration in its R&D facility in Malaysia to produce bio-LNG.

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Singapore-based Straits Bio-LNG aims to deliver 250,000 mt of bio-LNG bunker fuel per year

Straits Bio-LNG, a privately owned supplier of bio-LNG, is aiming to deliver 250,000 metric tonnes (mt) of bio-LNG per year in Singapore, according to SEA-LNG on Thursday (13 February).

The Singapore-based company, led by SK Tan as CEO, is doing so in response to the growing demand for LNG. LNG bunkering volumes have grown significantly in key bunkering hubs as more LNG-fuelled vessels have entered into operation. 

The Maritime and Port Authority of Singapore (MPA) saw a dramatic four-fold increase in 2024 to almost 340,000 mt, SEA-LNG said in a statement announcing Straits Bio-LNG joining the coalition. 

Headquartered in Singapore, the company boasts a growing team led by SK Tan as CEO.  

Yiyong He, Director at Straits Bio-LNG, said: “We’re firmly convinced in the viability of the LNG pathway to decarbonise the shipping industry. With its very low carbon intensity and improving commerciality, liquified biomethane will be a critical piece of the puzzle for decarbonising the sector.”

“By joining SEA-LNG, we’re proud to be part of a collection of first movers making real strides to make the LNG pathway a tangible reality today.”

Straits Bio-LNG aims to reach its bio-LNG supply goal by using pioneering methods. It is currently in the advanced stage of testing breaking down Empty Fruit Bunch (EFB) through an established biological process with high enzyme concentration in its R&D facility in Malaysia. 

Both Palm Oil Mill Effluent (POME) and EFB are sustainable biomass resources listed in the “List of Materials Eligible for ISCC EU Certification” and are therefore compliant with the European Union’s Renewable Energy Directive (RED).

Peter Keller, chairman of SEA-LNG, added: “The Port of Singapore is the largest global bunkering hub. As seen in our View from the Bridge report, 2024 saw record growth in LNG and liquified biomethane bunkering, but we need more fuel to meet upcoming demand.”

“The use of liquefied biomethane as a marine fuel can reduce GHG emissions by up to 80% compared to marine diesel on a full well-to-wake basis. When produced from the anaerobic digestion of waste materials, such as manure, POME or EFB, methane that would otherwise be released into the atmosphere is captured, resulting in negative emissions of up to -190% compared with diesel."

An independent study by the Maritime Energy and Sustainable Development Centre of Excellence at Nanyang Technical University in Singapore found that pure bio-LNG could cover up to 13% of the total energy demand for shipping fuels in 2050, rising to 63% for a 20% blending ratio. 

SEA-LNG added MPA has firmly established itself as a leader in the LNG pathway, with suppliers such as Straits Bio-LNG reinforcing this position. 

Recently, the port launched an Expression of Interest (EOI) to explore scalable solutions for sea-based LNG reloading to complement the existing onshore LNG bunkering storage and jetty capacities and the supply of e/bio-methane as marine fuel in the Port of Singapore.

“Straits Bio-LNG will play a critical role in furthering the expansion of liquified biomethane at scale to meet the demand and continuing to showcase the LNG pathway as a practical and realistic solution for shipowners to decarbonise their operations, starting today,” it said. 

Related: Singapore: MPA launches EOI to expand LNG bunkering services amid growing demand

 

Photo credit: Straits Bio-LNG
Published: 14 February, 2025

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