Branch line removal while in service
Branch line removal while in service
(OP)
I'm in need of a solution to remove a branch line from an active chilled water main. It's running at ~60psig, ~40°F, 30" ductile main, with a 3/4" A53 branch. We encountered this while excavating to replace some adjacent piping. I keep trying to think up something that would work for this removal, but can't think of anything that would be reliable enough - thinking on the lines of a reverse set-up of a hot-tap scenario, but just coming up dry.
Any ideas on this one? My engineers haven't come out with a solution on this either. This branch should really be removed entirely, and a flush patch installed, just not an option until we can schedule a shutdown next spring. Need something to get us by until then.
Any ideas on this one? My engineers haven't come out with a solution on this either. This branch should really be removed entirely, and a flush patch installed, just not an option until we can schedule a shutdown next spring. Need something to get us by until then.





RE: Branch line removal while in service
http://www.tdwilliamson.com/content/Bulletins/STOPPLE®%20Train%20Flyer.pdf
RE: Branch line removal while in service
RE: Branch line removal while in service
Is the 3/4" pipe still flowing whilst you do this?
Where is the nearest valve on the 3/4" line?
How much of a branch stub can you handle until you cut it off?
You need to find access way into your 3/4 " pipe then you can figure out a way to get an expanding plug in there/
No flow just put on a freeze block at the connection and then add a valve.
Or us a steel pipe squeeze off tool like this.
http://www.squeezetool.com/products-huskieps62b.ph...
Many ways to kill this cat.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Branch line removal while in service
RE: Branch line removal while in service
There are a number of vendors - I searched "steel pipe squeeze off tool"
I meant freeze the branch line - if you're going to remove it surely you can close that valve? Would allow you to remove the 90 and add a valve so you can get access. Maybe even use an expanding plug? There are many with long activation tools.
Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
RE: Branch line removal while in service
RE: Branch line removal while in service