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42TWENTY
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Join Date: Oct 2009
Posts: 1

Pressure Testing Impulse Tubing

10/19/2009 7:21 AM

Does anyone have a procedure for the testing oF instrument impulse tubing.

The service pressure is 360bar, hydraulic fluid ie Glycol/water mix. Typicaly the tubing operates shutdown valves on a offshore installation. Tubing 316 SS, 3/8. 1/2, 9/16.
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Re: Pressure Testing Impulse Tubing

10/20/2009 4:15 AM

You make a small impulse connection portion from the sample coil which can be connected to a pressure gauge of 0 to 600 bar.Then conduct a test like testing the gauge at 360 bar , 396 bar in steps of 10% increase upto 130% from the rated pressure.

This gives the indication whether the impulse tubing is capable of withstanding the rated pressure.

N.Baskaran.
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