A Tesla Megapack caught fire last July in Australia – We now know what happened & More News Here

Last July, a Tesla Megapack in the 300MW/450MWh Victoria Big Battery caught fire whereas it was being examined. The fire unfold to a different battery, ensuing in two Megapacks in the set up being destroyed. An investigation into the incident was promptly initiated a number of days later. 

The outcomes of the investigation have now been made public. According to a technical report written by specialists at Fisher Engineering and the Energy Safety Response Group (ESRG), the Victoria fire last July was brought on by a liquid coolant leak, which brought about arcing throughout the Megapack’s battery modules. 

“The most likely root cause of the fire was a leak within the liquid cooling system of MP-1 causing arcing in the power electronics of the Megapack’s battery modules. This resulted in heating of the battery module’s lithium-ion cells that led to a propagating thermal runaway event and the fire,” the report learn. 

Personnel in the world initially observed smoke emanating from one Megapack battery at round 10 a.m. on July 30. Emergency crews have been known as, and as soon as they arrived, a fringe was established across the battery storage unit. Water was utilized to the Megapack, however the flames unfold to a neighboring battery unit anyway. 

Fortunately, the unfold of the blaze stopped there, and the fire burned itself out over a six-hour interval. The outcomes of the incident have been in line with Tesla’s steerage for such incidents, which advises emergency responders to permit Megapacks which have caught fire to burn themselves out. The incident was finally dubbed a “safe failure,” based on a report from Energy Storage News. 

It must be famous that the Megapack that began the fire had been manually disconnected from quite a lot of monitoring, management, and information assortment programs as a result of it was present process testing on the time of the incident. Wind speeds on the time additionally contributed to the unfold of the blaze. 

Tesla, for its half, has carried out quite a lot of procedural, firmware, and {hardware} mitigations to keep away from comparable incidents from occurring in the longer term. These embody improved coolant system inspections throughout Megapack meeting, extra alarms to the coolant system’s telemetry information to establish and reply to a doable coolant leak, and the set up of newly designed, thermally insulated metal vent shields throughout the thermal roof of all Megapacks, amongst others. 

The outcomes of the Victoria Megapack fire’s investigation may very well be considered beneath. 

VBB Fire Independent Report of Technical Findings by Simon Alvarez on Scribd

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A Tesla Megapack caught fire last July in Australia — We now know what happened

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