Podcast
Questions and Answers
What is the first step to take when encountering fire, smoke, or odor from a Powerwall?
What is the first step to take when encountering fire, smoke, or odor from a Powerwall?
- Contact Tesla
- Evacuate
- Shut Down Unit
- Announce to incoming units (correct)
Which of the following statements about shutting down the Powerwall is correct?
Which of the following statements about shutting down the Powerwall is correct?
- Shutting down de-energizes the battery.
- You can safely open the unit if smoke is present.
- Shutting down does not de-energize the battery. (correct)
- Remove the low voltage clip at the meter only after shutting down.
What should be used to cool the casing during a Powerwall fire?
What should be used to cool the casing during a Powerwall fire?
- Foam suppressants
- Direct water on the battery
- Wide fog to cool the casing (correct)
- Plain water vapor
What is the primary reason for evacuating during a fire involving Powerwall systems?
What is the primary reason for evacuating during a fire involving Powerwall systems?
How long should you continue cooling a thermal runaway cell after extinguishing the fire?
How long should you continue cooling a thermal runaway cell after extinguishing the fire?
What is the effect of directing water onto a burning enclosure of a battery fire?
What is the effect of directing water onto a burning enclosure of a battery fire?
During defensive operations for a battery fire, what should be prioritized?
During defensive operations for a battery fire, what should be prioritized?
What is advised regarding the Megapack during a smoke or fire incident?
What is advised regarding the Megapack during a smoke or fire incident?
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Study Notes
Emergency Response for Tesla Powerwall
- Initial Response: Thermal runaway often indicated by smoke; immediate attention required.
- Emergency Steps:
- Notify main electrical power source location to incoming units.
- Use Self-Contained Breathing Apparatus (SCBA) and Personal Protective Equipment (PPE).
- Shut down the Powerwall unit safely.
- Evacuate the area.
- Contact Tesla for professional assistance.
- Fire Extinguishment:
- Use wide fog water spray to cool casing and prevent fire spread.
- Once extinguished, check temperature with Thermal Imaging Camera (TIC); if elevated, continue cooling for 15 minutes.
- Stability confirmed if no temperature rise for 45 minutes.
Powerwall Shutdown Procedure
- Shutting down does not electrically de-energize the battery.
- Avoid opening the unit if smoke or fire is present.
- Stay away from water during flooding situations.
- Switches and Breakers Shutdown:
- For solar systems, shut down AC inverter and use emergency stop (Estop).
- Shut down each unit via the switch located on the side (1/3 from the top).
- De-energize AC breakers to units.
- If unsafe to shut down breakers, remove the low voltage clip at the meter or cut the cable for safety.
Lithium-Ion Battery Thermal Runaway
- Single cell thermal runaway is isolated and does not affect other cells; usually triggered by external events.
- Directing water at the thermal runaway cell only prolongs the process.
- Suppression methods like water can lead to electrolysis, increasing flammable gas risk.
Smoke or Fire from Powerpack/Megapack Systems
- Emergency Protocol:
- Initiate shutdown immediately.
- Evacuate the area quickly.
- Contact Tesla; do not approach or touch the unit.
- Megapack systems are equipped with roof vents for smoke and flames.
Defensive Operations for Battery Fires
- Protect surrounding structures and exposures from heat.
- Cool adjacent battery systems to prevent additional incidents.
- Full PPE is mandatory due to extremely toxic gases emitted from battery fires.
- Battery fires may burn for extended periods (up to 24 hours); allow complete consumption before approaching.
- Monitor temperature with TIC after fire and smoke have ceased.
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