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HOT TAPPING - GAS PIPELINE - 52" - 42"

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marcello1983

marcello1983

Mechanical
Jun 16, 2011
4
Dear all, good day to everybody,
I kindly request to all the specialist a help on the following matter :
I have to do a HOT TAPPING on GAS pipeline existing 52" and 42".
As far as I understand, for HOT TAPPING in GAS LINE is required to do a BYPASS in order to cut and install a new piece.
In my case I have 52"x14" and 42"x14", in this case will be a WELDOLET, and not BARRED TEE, I'm expecting.
In your opinion make WELDOLET 52"x14" and 42"x14" will not create a problem of PIG STUCK, I'm right?
Your opinion is really appreciated.
Thanks
Best Regards
Marcello



 
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You need to tell us the thickness and you should discuss with an experienced hot tap contractor to do the work.
 
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Who has made this proposal? Move the thread to the piping and pipeline forum for more pertinent responses.

Steve Jones
Corrosion Management Consultant


All answers are personal opinions only and are in no way connected with any employer.
 
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SteveJ,
Is it just me or has there been a dramatic increase recently in questions posted under completely inappropriate forums?

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."
 
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@IM
I'm not getting that impression. It takes time to learn the unwritten rules.

Steve Jones
Corrosion Management Consultant


All answers are personal opinions only and are in no way connected with any employer.
 
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Those branch sizes should be OK, but would be better if you could install something, but if this is a hot tap then its a hot tap, not a bypass.

What are you trying to do?

Try looking at TD willainsons site which hat hot tap and stopple if you need a cut out, but there are many ways to skin this cat.




Remember - More details = better answers
Also: If you get a response it's polite to respond to it.
 
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Those weldolets will be fair sized chunks of metal and will require a hefty weld in a concentrated location. For the sizes, should be looking at a split tee, or similar branch connection.

Steve Jones
Corrosion Management Consultant


All answers are personal opinions only and are in no way connected with any employer.
 
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Agree with the wisdom of SJones .... Weldolets are commonly not the best choice for larger (>6"NPS) piping systems.

In addition to the risk of weld distortion, the actual welding of the branch may take an excessive amount of time ....

MJCronin
Sr. Process Engineer
 
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