Can some-one please tell me what the radius is from a possible leak that denotes the different zones in IIC areas (IEC). I only have NFPA standards at hand.
IEC Group IIC covers Hydrogen. The comparable NFPA (NEC) Hazardous Location is Class I, Group B. Please note that they are not equal regarding the order of severity of exposion. I also believe, that test methods are different.
It is my understanding that IEC has more severe requirements!
Thank you Shortstub.
I know from NFPA that the area enclosing a potential leak has a 15 ft (4.57m) radius for Div. 2 and 5 ft for Div.1 (in open - ventilated gaseous) areas and that other rules apply for varying circumstances. Do you know what the IEC radii for Zones 0, 1 and 2?
Hi-all :
if some-one can help me for the same question (determination of radius from a possible leak ) but with zones in IIA areas (IEC).
Conditions are in open areas for zone0, zone1 and zone2.
thanks for your quick reply.
