Diesel Fuel Line crossing an Electrical Duct Bank 1

[ProcessHVAC]

Hi everyone, I am working on the design of a train fueling facility. I have 4 x (4-6") diesel fuel lines that have to cross a concrete encased electrical ductbank (underground). The Client does not want to relocate this ductbank.. The diesel fuel lines are FRP cladded double walled carbon steel pipes. I am wondering if there is any regulation or Code that states a minimum clearance to the electrical duct bank? I know NFPA 30 and other provide a minimum burial depth for fuel lines and separation between the fuel lines but nothing related to electrical.

 

[BigInch]

Not that I know of. 12" would be easily acceptable in most diesel product pipeline situations, if it is a more or less direct crossing, say within 45 degrees or less. For Parallel runs of any real length, a farther distance would be desireable, but not absolutely necessary.

If it ain't broke, don't fix it. If it's not safe ... make it that way.

 

[konman]

CSA Z662 says 300 mm.

 

[ProcessHVAC]

Thanks guys.

Konman: I assume that the 300 mm is measured from the edge of the ductbank to the outer diameter of the double walled line?

 

[BigInch]

Yes, it would be the clear distance.

If it ain't broke, don't fix it. If it's not safe ... make it that way.