Wow, thanks everyone, lots of interesting ideas. I'll see if there are any records from the 60's on the material and crossings. That will get us a bit closer then look into the other suggestions. Looked into GPR and the pipe is too deep to detect the 2" OD change :(
Hi Everyone,
Looking for some creative ideas for locating an underground 10" to 12" transition piece on a sour gas pipeline that is unpiggable. I'd prefer not opening up the line for a tethered tool or taking it out of service. I'm looking for as built records, old hands that were around at...
