Annex B

In the annex “B” are reported some example of hazardous zone classification in accordance with ATEX standards.

Below it’s reported an example extrapolated from the annex.

Example 3

Figures B.5 e B.6 show the hazardous zones for an automatic spray booth for liquid coating material with

• 25 % < C_{LEL Liquid} < 50 % in the internal volume of spray booth;
• 25 % < C_{LEL Liquid} < 50 % in the internal volume of the exhaust air cleaning system;
• 25 % < C_{LEL Liquid} < 50 % in the internal volume of the exhaust air ducting and recirculation air ducting.

* C_{LEL Liquid}: concentration of flammable solvents (in air) in the spray booths as a percentage of LEL