3/4" Hot tap for chemical injection (Quil)

[ENPMAT]

Hi evry one,
Our Client is requesting to install an injection quil (3/4") on a 10" production line in service.
Is there any procedure to perform such work without stopping the production (like hot tapping for exemple.
Regards;

 

[pennpiper]

ENPMAT,
You did not say where you are so it is hard to say all things are available where you are.

However go here:

http://www.tecpesa.es/hottap182.html

They have
Hot-Tap machines for 1/2" (DN15) and up.

 

[bimr]

Assume that you are posting about a water service. Use a hot tap and a corporation stop.

http://www.tycowater.com/__data/page/10945/Pressure_Tapping.pdf

http://www.psgdover.com/neptune/2012-05-23-04-02-37/accessories/corporation-stops-a-injection-quills

 

[SJones]

Could you not have the quill inserted via a 2-inch access fitting hot tap, say Rohrback Cosasco as an example?

Steve Jones
Materials & Corrosion Engineer

http://www.linkedin.com/pub/8/83b/b04

 

[TD2K]

Another source

http://www.tdwilliamson.com/en/Services/HotTapping/Pages/Home.aspx

You'll need to supply them with the process information on the service you want to tap as well as the materials you want to use.

Some services are more difficult than others. Unsaturated compounds, piping requiring stress relieving, acids, caustics, thermally unstable compounds can all be issues.

Refer to API 2201 Safe Hot Tapping Practices in the Petroleum & Petrochemical Industries.

 

[ENPMAT]

Many thanks to all for information

 

[irfan202]

Yes you can perform the hot tap by adding a weldolet on header but following need to be studied before performing the work.
1. Line Pressure, line temperature and line flow during welding.
2. Line pressure, line temperature and line welding during drilling.
3. Wall thickness of header must be taken within 90 days.
4. Isolation valve must be ball valve full port.
5. Make sure hot tap drilling machine for 3/4" is available otherwise you need to do with higher size 2"
6. detail package shall be prepared by designer review by operation team.