safe distance between transmission tower and buried gas pipeline 1

[goodchoi]

Hi, I'm searching for any national standards or regulations of safe separation distance between transmission tower (over 154 kV with overhead groundwire)
and nearby buried gas pipeline.
Any comment or input is very appreciated.
Thanks in advance.

 

[cuky2000]

Two major effects can be expected from long distance paralleling transmission line and pipeline.
• Potentially life-threatening for operations personnel to touch the pipeline.

• Accelerated corrosion on the pipeline.

To mitigate the negative impact of the AC transmission line, the pipeline should be grounded with a system such as passes AC, but blocks DC, to maintain the cathodic protection system to prevent excessive corrosion in the pipeline.

Below are a few references in this subject:

• "The Effects of High Voltage Alternating Current (HVAC) Transmission Lines on Buried Pipe Lines," Paper No. PCI-70-32, Presented at the Petroleum and Chemical Industry Conference, Tulsa, Oklahoma, Sept. 15, 1970;
• Kirkpatrick, E. L. "Induced AC Voltages on Pipe Lines May Present a Serious Hazard," Pipe line and Gas Journal, October, 1997;
• Lichtenstein, Joram, "AC and Lightning Hazards on Pipe Lines," Materials Performance, December, 1992.

 

[tinfoil]

'national standards' for which country?