Section 6 Machinery Installations in Hazardous Areas

601. General

1. Mechanical equipment is to be limited to that necessary for operational purposes.

2. Mechanical equipment and machinery in hazardous areas are to be so constructed and installed as to reduce the risk of ignition from sparking due to the formation of static electricity or friction be- tween moving parts and from high temperatures of exposed parts due to exhausts or other emissions.

3. Internal combustion engines are not to be installed in the hazardous areas. The installation of in- ternal combustion machinery may be permitted in Zone 1 and Zone 2 hazardous areas, provided that the Society is satisfied that sufficient precautions have been taken against the risk of dangerous ignition.

4. The installation of fired equipment may be permitted in Zone 2 hazardous areas, provided that the Society is satisfied that sufficient precaution has been taken against the risk of dangerous ignition.

5. Exhaust outlets of internal combustion engines are to be fitted with suitable spark arresting devices and to discharge outside the hazardous areas.

6. Air intakes for internal combustion engines are to be not less than 3 m from the hazardous areas.

7. Exhaust outlets of boilers are to be located outside the hazardous areas.