I need to cut into a pipe that had diesel
I need to cut into a pipe that had diesel
(OP)
I need to cut into a pipe that had deisel in it, What can I flush the pipe with in order to make it safer. I know that diesel has a higher flash point but none the less I want to reduce the risk. The pipe is old and I will also need to tie back in to it with newer pipe. So obviously I will be welding on it. Any help, I would be grateful. I may purge with nitrogen when welding but the concern will be cutting on the pipe. Thanks





RE: I need to cut into a pipe that had diesel
If you give us a little more details we might be able to be of more help.
One other thing you may want to consider, Contact a local "Hot-Tap" contractor and have them visit your site and advise you.
RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
Cold cutting does not help for the welding part of the original question.
RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
Circulate or flush with soapy water. Some folks use steam to clean the pipe.
Drain and treat the contaminated water according to local environmental requirements.
Purge with an inert gas until O2 is depleted sufficiently.
Suited up and with breathing air, cut the pipe.
This is just a brief summary. A complete, fully reviewed procedure considering Lock Out/Tag Out could be 10X as long.
Good luck,
Latexman
RE: I need to cut into a pipe that had diesel
All of the above is good advice. One approach not mentioned is cold cut and thread the pipe to use a threaded flange or flange and nipple.
I like to steam for at least 8 hrs if I use this approach.
Here are two approaches using plugs mentioned above.
The best is the EST Isolation Plug with the other being the bolt type medium pressure test plug.
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RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
Good luck,
Latexman
RE: I need to cut into a pipe that had diesel
Regards,
Donf
RE: I need to cut into a pipe that had diesel
**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/
RE: I need to cut into a pipe that had diesel
Good luck,
Latexman
RE: I need to cut into a pipe that had diesel
**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/
RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
RE: I need to cut into a pipe that had diesel
Then you can weld and flush with diesel.
RE: I need to cut into a pipe that had diesel
I'm not from that firm, but its works very good(lockrings)
RE: I need to cut into a pipe that had diesel
Diesel burnt off OK but the amount of tank deterioration was less than hoped for.
But as previosly stated, dont try this... especially in a built up area.... unless you know what your doing
RE: I need to cut into a pipe that had diesel
You can light up liquid diesel, but via the vapor alone, its not quite as easy as one might think.
**********************
"The problem isn't finding the solution, its trying to get to the real question." BigInch
http://virtualpipeline.spaces.live.com/