Part 15 Hazardous area, Diesel fuel

[youngneedy]

as part of Part 15 of hazardous area classifcation our process engineers are trying to term diesel fuel as producing hazardous area, they are stating that pressurised fuel is hazardous, when it leaks in a fine mist, even when it escapes to atomosphere.

can anyone point me to a spec or anything that gives evidence stating diesel fuel when a mist under atomospheric pressure does not create a hazardous area.

thanks

 

[apollo9]

Section A1.1 in IP Code Part 15 backs up what your process engs are saying.
When under pressure e.g. when pumped, it should be treated as a Class III(2) fluid and the relevant hazard radii calculated.