spacing between gas line and 400 kv line

[m_m_kilani]

Hello,

Can I know the minimum safety distance between (12") gas line and 400 kv line ..

I will be thankful if you can give me a reference for that ..

___________

Best regards,

Eng. M. Kilani

Nepco

Amman - Jordan
​

 

[rcarroll]

Nothing in the NEC. With a gas line & power line that big, the suppliers may have something to say about a separation.

 

[ZElectric]

Crossing a Gas Line

Crossing a Gas Line

I had one crossing between a 230kV HPOF cable and a High Pressure Gas Line. The crossing was 12" and not at right angles. The biggest problem was cathotic portection. The gas company imposes a DC voltage in their pipe and we impose the same on ours. We installed an sacrificial zink annode at a spot where the crossing was. If you are looking for a good rule for this its as fare as you can get. Watching your Extra High Voltage Underground Cables and keeping other utilities from encroaching is a full time job.

 

[don_resqcapt19]

Here is a report on corrosion damage to a underground pipeline that was run in parallel with overhead 345kV transmission lines.