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The Lab: Why bunker fuel oil analysis is more important than ever

Bunkers which are compliant with ISO 8217, may in fact contain contaminants, which can result in significant operational difficulties, including engine damage.

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The Lab, the independent laboratory facility opened by leading multi-disciplinary technical and scientific consultancy Brookes Bell, on Tuesday (9 August) released an article elaborating the greater importance of bunker fuel analysis today following a surge in bunker fuel quality issues in recent months: 

With rising fuel costs, supply chain disruptions resulting from the war in Ukraine, and the entry onto the market of sanction-breaking oil, fuel quality issues are becoming an increasing concern for vessel owners and operators. It’s an issue we’ve seen firsthand here at The Lab. As a result, bunker fuel oil analysis is becoming more important than ever.

The rise of bunker fuel oil quality issues 

It’s difficult to discern one specific reason as to why there has been a surge in bunker fuel quality issues in recent months. Certainly, the current geopolitical issues, supply chain disruptions and impacts on oil and gas producers detailed at the outset of this article won’t be helping matters.

One potential reason for the rise in bunker fuel oil quality issues could be the use of cheaper, possibly sub-standard blending components which render bunker fuel off-specification. We’ve also seen instances where insufficient clarity concerning the clauses of ISO 8217, which leads to confusion as to what levels of contaminants are ‘acceptable’.

The point is that, no matter how bunker fuel quality issues arise, the fact is that they are arising - and vessel owners and operators should be aware and prepared.

Bunker alerts

When these contaminated bunkers are identified, a bunker alert is issued by VPS - who continually monitor global fuel quality and fuel oil trends in various ports around the world.

It’s these bunker alerts which prove there has been a noticeable surge of contaminated bunkers onto the world market - with 60% more bunker alerts issued this year compared to last (note - VPS will issue a bunker alert when they have identified an off-spec parameter for three vessels within one week for the same port). 

Of the bunker alerts issued by VPS in 2022, these have covered eight different ports for nine different parameters. 

Some of these bunker alerts have been related to sizable incidents. Arguably the largest occurred in Singapore in March of this year, where chemically-contaminated bunker HSFO fuel was delivered to over 200 vessels. 

According to reports, this resulted in major operational problems for 80 vessels - which has resulted in ongoing litigation over claims for compensation.

Bunker testing and specifications

What’s perhaps most shocking about the large-scale bunker contamination outlined above, is the point that Singapore - as the world’s largest bunkering port - has rigid sample testing procedures, governed by the Singapore Code of Practice for Bunkering (SS 600).

What’s more, these testing procedures were developed by the Maritime and Port Authority of Singapore and the Technical Committee for Bunkering under the purview of the Singapore Chemical Industry Council.

According to reports, the contamination has its roots in ‘Estonian type oil shale’ and ‘US type fracked shale oil’, with the principal contaminants being styrene and phenol.

Even more concerning, the off-spec, contaminated bunkers were not detected by the ISO 8217 testing requirements. 

This is a crucially important point for vessel owners, operators and charterers to absorb - even bunkers which are compliant with ISO 8217, may in fact contain contaminants, which can result in significant operational difficulties, including engine and other component damage.

A note on biofuels

Contaminants from poor cutter stocks or bad (or deliberate) blending practices aren’t the only thing vessel owners need to worry about. 

With an increasing volume of biofuels making their way onto the open market we are seeing a rise in cases of microbial contamination - this is because the fatty acid methyl esters in biofuels are hygroscopic, meaning they attract and absorb moisture.

Should your vessels be using biofuels then, it’s vital that the fuel system is kept as clean and dry as possible.

The consequences of bunker contamination

It’s important not to understate the potential negative consequences of taking on off-spec bunker fuel. Although it can be possible to burn off contaminated fuel, this isn’t always possible depending on the level and type of contamination.

In the worst case scenarios, taking on off-spec bunker fuel can result in asset damage, such as piston ring failure, cylinder liner damage, the deterioration of rubber seals, the accretion of solids on cylinder heads, the failure of gaskets and more. All of which can result in significant costs to remediate.

Damage to critical components can also lead to severe secondary consequences such as loss of propulsion, placing both the ship and crew at risk. This can impact on the safety of other vessels which may be navigating nearby, risking collisions and even groundings.

As you can see, what may seem like a single incident can quickly compound into several more.

It pays to take bunker contamination seriously.

What’s the solution? 

If vessel operators must treat ISO 8217 with caution, what then is the solution? 

Whilst there is talk of overhauling ISO 8217 to bring about stricter testing to identify contaminants before they pass a vessel’s manifold, as well as discussions concerning a bunker supplier licensing scheme - vessel owners and operators are advised not to wait for these developments. 

Instead, prevention should be the order of the day.

Here at The Lab we strongly recommend a proactive approach to fuel management and testing. 

We can carry out the full range of ISO 8217 Table 2 testing, supplemented by gas chromatography - mass spectrometry analysis (GC-MS), fourier transform infrared spectroscopy (FTIR), cleanliness and compatibility testing, and more.

 

Photo credit: The Lab at Brookes Bell
Published: 16 August, 2022

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LNG Bunkering

Malaysia: Port of Tanjung Pelepas achieves milestone with first SIMOPS LNG bunkering op

LNG bunker vessel “MT Paolina Cosulich” refuelled LNG dual-fuel container ship “Bangkok Express”, operated by Hapag-Lloyd AG at the port.

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Malaysia: Port of Tanjung Pelepas achieves milestone with first SIMOPS LNG bunkering op

Port of Tanjung Pelepas (PTP) on Sunday (16 February) said it successfully conducted its first Simultaneous Operations (SIMOPS) of liquefied natural gas (LNG) bunkering.

This significant achievement involved the LNG dual-fuel container ship Bangkok Express, operated by Hapag-Lloyd AG, and the LNG bunker vessel MT Paolina Cosulich.

“This milestone underscores PTP's dedication to enhancing our competitive edge in the global market by facilitating clean and efficient maritime operations,” the port said in a social media post.

“We are proud to have partnered with PETCO Trading Labuan Co., Ltd. (PTLCL) and Hapag-Lloyd on this pioneering initiative.”

Manifold Times previously reported the port also achieving its first LNG bunkering operation last year. 

The port completed its first-ever ship-to-containership methanol bunkering operation in November last year. 

Manifold Times previously reported the port achieving its first LNG bunkering operation last year. 

Related: Malaysia: Port of Tanjung Pelepas achieves milestone with first methanol bunkering op
Related: Malaysia: Port of Tanjung Pelepas completes first LNG bunkering operation
Related: Malaysia: Tanjung Pelepas selected to join P41 initiative to achieve green bunkering hub ambition
Related: Port Of Tanjung Pelepas joins G2G decarbonisation scheme between Malaysia and Australia

 

Photo credit: Port of Tanjung Pelepas
Published: 18 February, 2025

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LNG Bunkering

Kunlun Energy wraps up first STS offshore LNG bunkering operation in Hong Kong

Kunlun Energy, a red-chip controlled by PetroChina, said its bunkering vessel refuelled container ship “Zim Haifa Blue Stone” with 2,200 metric tonnes of LNG bunker fuel in a seven-hour operation.

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Kunlun Energy wraps up first STS offshore LNG bunkering op in Hong Kong

Kunlun Energy, a red-chip controlled by PetroChina, on Monday (17 February) said it completed Hong Kong’s first ship-to-ship (STS) offshore liquefied natural gas (LNG) bunkering operation on 14 February. 

Kunlun Energy's 8,300 m3 capacity LNG bunkering vessel refuelled the container ship Zim Haifa Blue Stone with 2,200 metric tonnes (mt) of LNG in a seven-hour operation. 

The bunkering vessel involved in the operation is operated by a Kunlun Energy subsidiary. 

According to a PetroChina official, the receiving vessel Zim Haifa Blue Stone departed from Busan, South Korea, on 3 February and passed through Qingdao, Shanghai, and Ningbo before arriving in Hong Kong on 12 February. 

Its final destination is Istanbul, Turkey. This refuelling operation can meet the ship's fuel needs for the entire journey. 

“The successful implementation of this "ship-to-ship" offshore LNG bunkering operation is another example of Kunlun Energy's efforts to help improve the international shipping hub of the Guangdong-Hong Kong-Macao Greater Bay Area,” Kunlun Energy said. 

“It is expected to attract more green-fuel vessels to pass through Hong Kong, encourage more environmentally friendly companies to conduct business in Hong Kong, accelerate transformation and technological innovation in the shipping industry, and promote the construction of Hong Kong as a green and smart port.”

“This operation holds significant importance for Hong Kong's push toward a green and sustainable shipping industry.”

 

Photo credit: Kunlun Energy
Published: 18 February, 2025

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Biofuel

Wallenius Wilhelmsen successfully completes its first biofuel bunkering trial in Japan

“M/V Tamesis” bunkered 400 metric tonnes of B24 VLSFO blended biofuel, supplied by Mitsubishi Corporation Energy at Port of Yokohama.

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Wallenius Wilhelmsen successfully completes its first biofuel bunkering trial in Japan

Wallenius Wilhelmsen on Monday (17 February) said it has successfully completed its first biofuel bunkering trial at the Port of Yokohama in Japan.

M/V Tamesis bunkered 400 metric tonnes (mt) of B24 VLSFO blended biofuel, supplied by Mitsubishi Corporation Energy. 

This milestone is part of Wallenius Wilhelmsen’s ongoing efforts to reduce its environmental impact and promote sustainability in shipping.

“As part of our commitment to reducing greenhouse gas emissions, we have expanded our locations for biofuel supply. Since 2023, the expansion has included key ports in Belgium, Korea and Singapore,” the company said.

“Expanding to Japan enhances our ability to operate more efficiently and sustainably across our global network.”

Wallenius Wilhelmsen has set ambitious emission reduction targets to reach net-zero by 2040. This includes a 40% absolute reduction of well-to-wake greenhouse gas emissions by 2030 compared to our 2022 baseline, as approved by the Science Based Targets initiative.

Yasuyuki Sakurai, Senior Manager, the Orcelle Accelerator taskforce at Wallenius Wilhelmsen, said: “Achieving these targets require a major shift in energy sources from conventional fuels to low and zero-carbon alternatives. Expanding supply locations and securing sufficient biofuels remain a priority, and we are pleased to have conducted our first B24 VLSFO blended biofuel bunkering trial in Yokohama.”

“While our Reduced Carbon Service customers fully support our mass-balance concept, ensuring sufficient biofuel usage across our entire fleet and trade lanes is key to achieving our long-term sustainability goals.”

Mitsuo Ueda, General Manager of Mitsubishi Corporation Energy, said: “In anticipation of growing demand for biofuel in the marine sector, we have begun storing biofuel at our oil terminal in Onahama (Fukushima Prefecture) and supplying B24 in Tokyo Bay using our barges.:

“We deeply admire Wallenius Wilhelmsen’s leadership in the decarbonisation of the shipping industry and remain committed to playing our part in creating a more sustainable future. We will continue striving to meet industry needs through a stable supply of biofuels and contribute to the realisation of a carbon-neutral society.”

This milestone was achieved through close collaboration between Wallenius Wilhelmsen’s Energy Sourcing team and the Orcelle Accelerator taskforce, which has worked for the past two years to establish biofuel bunkering capabilities in Japan.

 

Photo credit: Wallenius Wilhelmsen
Published: 18 February, 2025

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