A recent incident on a passenger ship highlighted the unique safety risks associated with integrated lithium-ion (Li-ion) battery systems. A fire broke out due to overheated, inadequately cut tabs; fortunately, there were no injuries, and damage was minimal. This underscores the necessity for thorough technical reviews and maintenance of all Li-ion installations on inspected vessels, regardless of the battery size or intended consumer use.
The Coast Guard has provided specific guidelines for these systems, detailed in CG-ENGPOLIY LETTER 02-19 and ASTM F3353-19. They emphasize unique security considerations such as energy density, thermal runaway, and toxic exhaust from potential fires. Moreover, these guidelines outline critical safety assessments, battery management protocols, and structural fire protection requirements.
Operators and owners must be able to identify Li-ion batteries, which can resemble traditional lead-acid batteries; they should read the type specifications carefully. Regular inspections for wear and signs of deterioration are crucial, as well as rigorous training in handling and responding to battery-related anomalies. Safety drills specific to Li-ion batteries are essential to ensure readiness for potential emergencies.
This advisory serves informational purposes and does not replace any domestic or international safety and operational mandates. Questions can be directed to the Marine Safety Center.
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