DNV-GL is one of the most important classification societies when it comes to inspecting maritime battery systems. With the certification, insurers know that ships built with the Green Orca® High Energy batteries meet the strict requirements stipulated by DNV-GL. As its name suggests, Type Approval certification is a procedure for approving certain types of products that can be installed aboard vessels. (EST-Floattech Type Approval Registration by DNV-GL)
In order to identify the risk potential in the system, tests are conducted in accordance with e.g. IEC62619 and regulations by DNV-GL. These tests involve the cell, battery and battery system levels, and include a thermal test, external short circuit test and forced discharge test, but also environmental tests, such as vibration, dry & damp heat, and EMC.
One of the most important tests is the internal thermal event test, also known as the ‘propagation test’. EST-Floattech is unique in its passive safety system, which guarantees safety on board.
EST-Floattech’s “Safe by Design” principle served as the foundation for the certification and the design of our battery module. Everything in the module is geared towards preventing a thermal runaway or thermal event from ever occurring in the first place, by means of hardware and software electronic safety measures.
However, in a worst-case scenario, the battery design is so robust that it is capable of dealing with a thermal runaway of one of the cells, or even a chain reaction resulting in a thermal runaway of other cells in the battery (and it will stay safe and controlled in the module), without the use of any active system. Such as a Battery Management System, cooling system or external fire extinguisher. It is an intrinsic element of the design itself.
This makes the EST-Floattech system perhaps the safest Energy Storage System in the industry, as it provides a ‘last line of defence’ for on-board safety, without relying on an active safety system. In the end, we all share responsibility for the safety of all souls on board a vessel, because you should never compromise on safety.
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