FS7: Ignition Test

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Interesting notes Publimix. I've had my camera tested onsite by technicians who have passed it, though I've never had a certificate of any kind. Wondering if anyone has...
 
Passing by technicians is very well possible in certain situations because there are different zones in the Atex zone classification:
Zone 0 - A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapor or mist is present continuously or for long periods or frequently
Zone 1 - A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapor or mist is likely to occur in normal operation occasionally.
Zone 2 - A place in which an explosive atmosphere consisting of a mixture with air of dangerous substances in the form of gas, vapor or mist is not likely to occur in normal operation but, if it does occur, will persist for a short period only.
Hazard - Dusts
Zone 20 - A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is present continuously, or for long periods or frequently.
Zone 21 - A place in which an explosive atmosphere in the form of a cloud of combustible dust in air is likely to occur in normal operation occasionally.
Zone 22 - A place in which an explosive atmosphere in the form or a cloud of combustible dust in air is not likely to occur in normal operation but, if it does occur, will persist for a short period only.

Effective ignition sources are:
Electric sparks. For example, a bad electrical connection.
Electrostatic discharge. Static electricity can be generated by air sliding over a wing (the fan in the FS7).
 
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