There are several reasons why tarpaulins or fire blankets should not be used on solar PV systems including,
- Not all types of tarpaulins or fire blankets effectively block the light, so the solar PV system may still be producing dangerous levels of DC electricity.
- This method requires first responders to operate at height and directly engage with a ‘live’ DC electrical generator, exposing first responders to unacceptable risk.
- If the PV array is damaged, the risks are unacceptable.
- If the PV array is on fire, a tarpaulin or fire blanket cannot be safely secured.
- Fire damage may increase the risk of roof collapse, preventing first responders from accessing the roof.
For these reasons, no responsible firefighter, first responder, electrical technician or employer will encourage this type of practice due to Work Health & Safety obligations and liability risk.