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Controlled pipe freezing: I can answer questions about how pipe freezing with liquid nitrogen can help you isolate a section of pipe for repairs under full system pressure without the need to shut down or have to drain the system. Water, oil, chemicals can be frozen safely to allow your maint. department to do the needed repairs.Freezing can be done on steel, copper, cast, PVC pipe, etc. I have frozen pipes at 1500 lbs pressure and up to 24" in Dia.

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NSTAR,Com energy,Sithe Energy,Boston Edison,Electric Boat, Mead Paper,etc. Many mech. contracting companys

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    K = Knowledgeability    C = Clarity of Response    P = Politeness
Jug 05/06/15101010Hi Fred, thanks for the input .. your .....
Louise10/22/14101010Thank You Fred
matt05/08/13101010Cheers Fred, Thanks for being so prompt .....
Seal03/14/13101010The info recv,d is what we .....
matt12/21/12101010Thanks Fred

Recent Answers from Fred Thibodeau

2015-05-06 1" CPVC can we freeze for repair:

Hi Jug,    Yes you can freeze CPVC pipe. You will need to freeze it with liquid nitrogen.    CPVC pipe takes a little longer to freeze because of the thick wall.    The pipe will be very brittle at the

2012-12-20 Freezing HDPE:

Hi Matt,   It takes 4 large bottles of nitrogen per hour ( 44 GAL bottles ) to keep the clamp full of nitrogen. Give or take it takes about 16 hour's to get a good plug.  Plus the number of hours you need

2012-10-24 ice plugs:

Hi Virgiiu,    Yes, you can use this method to do your test. Find a company that uses liquid nitrogen to freeze it and have them hold the plug until you are done your testing. They will need to know the

2012-07-02 Ice Plug Isolation:

Hi,   Yes you can freeze this line. The line will be brittle during the freeze so try not to move the line around much during your repair. Or you can anchor the line to something between the freeze and

2011-02-28 freezing long pipes:

Hi neil,   That may work but the problem your going to have is that any material moving through the pipe is going to keep warming up the pipe. I think that unless the material thats moving through the


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