PE gas pipe with pin hole
PE gas pipe with pin hole
(OP)
Fellow engineers,
A 2" PE pipe (SDR11) carrying natural gas, operating at 50psi develops a pin-hole leak. I would like to install an electrofusion saddle on it but supply cannot be interrupted. Other than installing a by-pass and performing a squeeze-off, are there any other methods to seal the hole temporarily (long enough to install the saddle)? Thx.
austsa
A 2" PE pipe (SDR11) carrying natural gas, operating at 50psi develops a pin-hole leak. I would like to install an electrofusion saddle on it but supply cannot be interrupted. Other than installing a by-pass and performing a squeeze-off, are there any other methods to seal the hole temporarily (long enough to install the saddle)? Thx.
austsa





RE: PE gas pipe with pin hole
All it would take is one carelessly tossed match, no?
RE: PE gas pipe with pin hole
RE: PE gas pipe with pin hole
RE: PE gas pipe with pin hole
There are wrapparound springs used on steel pipelines but with PE the creep characteristics may be a problem as the pipe will continue to reduce in diameter under load.
What is wrong with the EF saddle? Are you concerned that the temperature may cause ignition?
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His Holiness the Dalai Lama.
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RE: PE gas pipe with pin hole
Yes, I do not want to EF with gas leaking. Thus, I'm looking for a quick way to temporarily stop the leak, then I'll EF the saddle on.
austsa
RE: PE gas pipe with pin hole
PE is one of those dreadful materials where adhesives dont stick. On the other hand molten PE sticks to evrything.
You could hot tap either side of the leak with a valved saddle. Complete a bypass loop then squeeze of the leak.
"Sharing knowledge is the way to immortality"
His Holiness the Dalai Lama.
http://waterhammer.hopout.com.au/