hot tap natural gas piping 1

[fcxdfm]

I am working on a natural gas distribution project, and I am looking for some detail or procedure for hot tapping at the existing natural gas piping. The existing piping is 3" and 4" steel underground piping, and the new branch is 2" HDPE. Could anyone advise where I can find the detail or hot tapping procedure?

 

[jte]

TD Williamson, FlowServe, Team Inc, and probably several others do this kind of stuff routinely.

http://www.tdwilliamson.com/hottaptdw/ServBro/serv_HotWetColdTap.html

http://www.teamindustrialservices.com/taps/default.html

jt

 

[0707]

There is lots of hot tapping specialists who will give you the best advise.

For Hot Tapping you can follow “Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries API RECOMMENDED PRACTICE 2201” as a reference document

For some inputs on the subject you can go to:

http://www.epa.gov/gasstar/pdf/lessons/ll_hottaps.pdf

Regards

Luis

 

[fcxdfm]

Thanks, jt, and Luis.

 

[hottappipefreeze]

try

http://www.protapping.com

You would need to know what the operating pressure is and the flange rating on the valve in order to get a detail or procedure for hot tapping.

 

[nosabe]

Things to consider to make a hot tap
-frabricate branch(weldolet and weld neck flange)according to the company's piping standards
-check the thickness of the header where the welolet is to be welded
-make sure there the product is flowing while the branch is being welded
-pressure test brach after it's welded to header
-consider using a full port valve

 

[Gator]

- "consider using a full port valve" ==> ?

If you *don't* use a full-port valve, how do you expect to get the cutting head through.

Did I miss something from nosabe's message?

 

[BigInch]

A full port valve is preferable, but in some cases the cutting head might be a smaller diameter than a reduced port valve.

BigInch-born in the trenches.

http://virtualpipeline.spaces.msn.com