#16
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Guessing that part of the run is in a wet location where black pipe is not going to hold up. I replaced black pipe with flexible stainless on a run through a crawl space where rust had nearly penetrated the black pipe.
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#17
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Interesting I had figured this was in a basement. Still wouldn’t want to bury ss corrugated, but the poly mentioned earlier may be the answer IF it needs to be buried, but again it was mentioned you couldn’t bury ss corrugated.
Last edited by Mikej; 06-12-2019 at 08:08 PM. |
#18
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Quote:
__________________
Cheers...Daryl Life is too important to be taken seriously |
#19
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And I thought you were talking Mexican food...
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#20
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For burial it's supposed to be inside watertight conduit. I don't know what other options there are for direct burial, but I'm guessing stainless pipe would be one. On our farms where LP is the gas used, it's common to use copper tubing for direct burial. Don't know if that is recommended for NG. The most corroded place in the black pipe I removed was actually not in the crawl space, but about 6' inside the basement wall, on the bottom side of the floor joists. Last edited by oliver1850; 06-13-2019 at 01:26 AM. |
#21
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i picked up a couple sniffers. a continuous monitoring deal i can leave in various locations to track over time, as well as a flex-neck deal i can point at connections and such to ID/target leaks very precisely. Last edited by wallymann; 06-13-2019 at 07:54 AM. |
#22
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Quote:
__________________
http://less-than-epic.blogspot.com/ |
#23
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Man...I've learned a lot from this thread. When did all you guys get so smart?
Good luck, OP. I suspect that perhaps "teensy gas leak" may be an oxymoron. |
#24
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Best of luck. |
#25
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#26
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Finding the leak usually isn't too hard, unhook and cap or plug the line at each appliance and the meter connection. Pressurize with air to 60 to 100 psi, listen for the leak, if you don't hear it, leak soap will find it. Fix the leak(s), double check every single joint, the re-connect each appliance and leak check the new connections with soap. |
#27
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The black CSST is a far superior product to the yellow. https://www.mopropanesc.org/news-1/arc-resistant-csst http://www.tracpipe.com/technical/cs...-instructions/ https://www.youtube.com/watch?v=OpGsZ4xxzj8 Video with plumber showing a cut off section of yellow CSST with a pinhole from an arc from a lightning strike https://www.youtube.com/watch?v=BOfioT9fq6Y Last edited by Dekonick; 06-14-2019 at 10:33 PM. |
#28
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https://www.eia.gov/energyexplained/...tural_gas_home Last edited by Dekonick; 06-14-2019 at 10:46 PM. |
#29
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Quote:
__________________
Cheers...Daryl Life is too important to be taken seriously |
#30
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There is even a prescribed HS limit per x SCF of copper pipe, so one needs to know the HS content of the locally supplied NG. Here, but if using copper I would verify if that formula is still current: "Copper and copper alloy tube (except tin-lined copper tube) should not be used if the gas contains more than an average of 0.3 grains of hydrogen sulfide per 100 standard cubic feet (scf) of gas (0.7 mg/100 L)." As Mikej and others wrote, Schedule 40 black iron is just safer than copper. If exposed to heavy moisture/underground, then poly. Long runs of corrugated...just add up all the extra surface area prone to kinks and pinholes, so again also best avoided when possible. Copper and CSST flex are the worst options for NG. Regardless, whatever the material, if I smelled gas in my house, especially to the extent the op has, I would definitely not risk it nor rely on soapy water, other half-means, not even "sniffers" I was operating myself as I'm not a plumber and NG isn't H2O: I would have a qualified professional source out the issue and properly repair it (and probably avoid copper and/or CSST flex as much as possible, preferably entirely, as dekonick recommended above). |
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