Posted by David G on January 23, 2019 at 14:18:28 from (8.46.76.118):
In Reply to: Pipe Line update posted by JD Farmer on January 23, 2019 at 13:47:49:
Thanks for the update.
The pipelines have anode (I think that one) protection, a small DC voltage is applied to the pipeline every few miles to help keep the ion in the metal intact. A breakdown in the insulation can lead to this failing. That is why you will see an electric meter at a pipeline crossing every so often. The crossings are also double walled with a vent up along the road to make it easy to sniff.
Remember the smell (Mercaptin) is not injected until distribution, so it is supposed to be odorless, but I can smell faint hydrocarbons on leaks.
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