Classification of a bulk storage kerosene tank located inside a plant?

[Brig5150]

I have been back and forth on this issue and have only came up with this.

5' around the entire tank to be class I div. I wiring. Then 3' up from ground to 25' in diameter of tank to be class I div. I wiring.

None of which sounds right (because it is kerosene) but I need to prove other.

Thanks ahead of time for your help...

 

[rbalex]

Indoor or outdoor storage? Table 515.3 should answer your questions. What standard was used to classifiy the location? Art 500 alone is inadequate.

Kerosene is a Class I, Flammable liquid. It will result in a Class I, Group D, T3 location. Division 1 or 2, as applicable, will depend on the Table; however, if you have Division 1, you will also have Division 2 surrounding it.

 

[rbalex]

I am shame-faced :ashamed1: I misread NFPA 497. It lists kerosene's flashpoint as 72C (not F) so it's a combustible (not flammable) liguid. As such, except in extremely unusual circumstances, it wouldn't require classifying a location at all.

I thank Don (don_resqcapt19) for his gentle reminder.