4 replies to this topic

[Tamizh]

What is thew use of balancing ling in the pig Launcher and Receiver?

[shan]

Pig launcher/receiver is isolated from the normal operation.  The pressure inside the barrel of pig launcher/receiver is 0 psig during the normal operation.  When you are ready for switching to a pigging operation, you should pressurize the pig launcher/receiver to 'balance' the pipeline pressure and barrel pressure before opening the pigging valve to introduce the pipeline fluid into the pig launcher/receiver barrel.

[breizh]

Tamizh,

 

Consider reading these papers. Safety/operation are key .

 

Hope this will help you out.

 

Good luck

 

Breizh

[colt16]

With regards to this topic, does anyone have any experience to share with regards to flowmeters which allow pigging?

 

I am considering using a full bore type so that the pig may pass through with no problems. Then there will be no need to remove the flowmeter during pigging operation.

[Bobby Strain]

You can use an external ultrasonic meter.

 

Bobby