Re: Re: [MW:28633] Re: Valve in hydrotest, is is allowed?

Disagreement / Agreement without references for Acceptance / rejection is simply not acceptable.

Let your client submit his proof for rejection and you disagree or concur with your clause for acceptance.

Check the project specifications of your owenrs requirement.

Thanks.

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From: Qasim Qayyum

Date: 2018-11-15 12:42

To: materials-welding

Subject: Re: [MW:28631] Re: Valve in hydrotest, is is allowed?

As per the testing in aramco specifications, valves can be used as an test limit if they are in closed position. If they are in-line valves, they must be removed.

On Thu, Nov 15, 2018 at 7:23 AM Wayne <waynesettoon@gmail.com> wrote:

Have just been doing research on this for a current project. Under ANSI/FCI 70-3-2004 the classes are listed to VII. It also shows the allowable leakage for the different size valves. Am currently having a disagreement with the client and engineer about a hydro test that dropped 9 PSI over a 4 hour period. The system dead ended at three valves (1-8" gate valve & 2-12" gate valves). There was no pressure on the back side of these valves and they are not accepting the test.

HELP !!!!!!!

Wayne

On Wednesday, October 21, 2009 at 8:59:27 PM UTC-5, Shashank Vagal wrote:

Hi, Is it advisable to pressure test a water line for up to 10 bars with a valve already installed. (the valve will not be spaded during the test, it will only be in closed position)   Regards, Shashank Vagal

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