Another PCTC fire, (Pure Car & Truck Carrier)
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Morning Midas On Fire and Abandoned off the Coast of Alaska 3000 cars on board, 800 are EVs.
Here's a diagram layout of what a 6,000 car capacity PCTC is.
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I’m wondering what the root cause of these are. Maybe poor quality of the batteries?
This explains some of it:
Why do lithium-ion batteries catch fire?
Lithium-ion battery cells combine a flammable electrolyte with significant stored energy, and if a lithium-ion battery cell creates more heat than it can effectively disperse, it can lead to a rapid uncontrolled release of heat energy, known as ‘thermal runaway’, that can result in a fire or explosion.
Thermal runaway can be caused by a number reasons, including an internal short circuit due to manufacturing defects, ’lithium plating’ (formation of metallic lithium on an anode surface within a battery cell), or mechanical damage (e.g. piercing, dropping). Other possible causes of thermal runaway are exposure to heat from an external source or overcharging/over-discharging.
Thermal runaway can result in the ejection of a range of flammable and toxic gases from battery casings. The flammable gases generated often ignite immediately, but may also spread out unignited, until an external ignition source is encountered, resulting in an explosion.
Lithium-ion battery fires generate their own oxygen and can be very difficult to extinguish. Specialist Aqueous Vermiculite Dispersion (AVD) fire extinguishers may be an option for small incipient fires, where extinguishing media can be applied directly to the cells of a battery, providing a combination of cooling and oxygen depletion, but these fires are very often only controlled and extinguished when the Fire & Rescue Service deliver copious amounts of water to the burning materials.
How to minimise risk
It can be very hard to identify how and when a lithium-ion battery may catch fire, but there are some preventative measures to minimise the risk of lithium-ion battery fires:
- Only use batteries purchased from a reputable manufacturer or supplier.
- Protect batteries against being damaged and do not attempt to recharge lithium-ion batteries with any signs of damage. These should be safely disposed of.
- Only charge batteries with the original charger supplied.
- Do not leave batteries charging in unoccupied locations and disconnect/remove batteries from chargers after charging is complete.
- Avoid storing, using, or charging batteries at very high or very low temperatures and never cover chargers or charging devices. Don't leave any equipment that may contain lithium-ion batteries such as mobile phones in high temperature environments, such as in direct sunlight, or a hot vehicle.
- Don’t overcharge your batteries as this is a potential case of thermal runaway.
- Avoid keeping lithium-ion battery products in close proximity. While keeping these products close together does not increase the risk of a fire occurring, keeping these products away from each other can reduce the risk of fire spread from one battery/battery-powered-device to another.
- Remember to store batteries or products using lithium-ion batteries in a cool dry place away from flammable and combustible materials.
Why do lithium-ion batteries catch fire? | Fire Protection Association