Welcome to the world of propeller shaft seal failures and the hidden costs associated with synthetic Environmentally Acceptable Lubricants (EALs). In this article, we will delve into the research conducted by Gard, a renowned marine insurance firm, revealing the significant increase in seal damage following the introduction of new Vessel General Permit (VGP) rules. We will explore the correlation between the use of approved synthetic lubricants and the rise in seal failures, as well as the unforeseen consequences of these lubricants. Join us as we uncover the financial and environmental implications and explore the importance of seawater as a pollution-free alternative for lubricating propeller shaft bearings.
The Impact of Synthetic EALs on Propeller Shaft Seal Failures
Explore the correlation between synthetic Environmentally Acceptable Lubricants (EALs) and the increase in propeller shaft seal failures.
Since the introduction of new Vessel General Permit (VGP) rules in 2013, the use of approved synthetic lubricants, known as Environmentally Acceptable Lubricants (EALs), has seen a significant rise. However, this increase has also been accompanied by a surge in propeller shaft seal failures. Gard's research has shed light on the connection between these two factors, highlighting the potential hidden costs of synthetic EALs.
According to Gard's findings, as many as 80% of the investigated incidents involving stern tube seal failures were cases where an EAL was being used. This raises concerns about the performance and suitability of synthetic EALs in comparison to traditional mineral oils.
One of the reasons behind the increase in seal failures is the chemical composition of synthetic EALs. While these lubricants are more environmentally friendly than mineral oils, they often exhibit inferior performance characteristics. Studies have shown that EALs have lower viscosity under lower temperatures and can operate with a lower safety margin under high load operations. These factors contribute to the higher incidence of seal failures.
The Unforeseen Consequences of Synthetic EALs
Discover the unforeseen consequences that arise from the use of synthetic Environmentally Acceptable Lubricants (EALs) in marine applications.
While the intention behind the introduction of synthetic EALs was to mitigate the risk of mineral oil pollution, it has inadvertently led to unforeseen consequences. The reliance on synthetic EALs as a replacement for mineral oils has raised concerns about their performance and the potential environmental impact.
Gard's research has highlighted the environmental and financial implications of these unforeseen consequences. Even though synthetic EALs are considered more environmentally acceptable, they can still cause harm to the marine environment. In fact, some EALs have been found to be only slightly less damaging than the phased-out traditional oils.
It is crucial to evaluate the long-term effects and sustainability of synthetic EALs to ensure that they are truly environmentally friendly and do not pose any hidden risks to marine ecosystems.
The Role of Seawater as a Pollution-Free Lubricant
Discover the benefits of using seawater as a pollution-free alternative for lubricating propeller shaft bearings.
Amidst the concerns surrounding synthetic EALs, seawater emerges as a viable and pollution-free option for lubricating propeller shaft bearings. Thordon Bearings, a pioneer in seawater-lubricated bearings, advocates for the use of seawater as the only 100% pollution-free means of lubrication.
The Thordon COMPAC system, an award-winning open seawater-lubricated propeller shaft bearing system, eliminates the need for aft seals and offers reduced friction, leading to lower fuel consumption and emissions. This system not only provides improved bearing wear life and reliability but also ensures compliance with environmental regulations.
By embracing seawater as a lubricant, we can minimize the risk of oil pollution in the marine environment and protect marine life from potential harm caused by lubricant leaks.