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Hydrostatic Testing for High Pressure System

08/30/2010 10:03 PM

Dear!

I'm preparing testing procedure for a high pressure system (test pressure up to15,000 psi=1034 bar). I wonder if you have testing diagram (assembly of pump, valve, recorder..) and recommend kind of valve, fitting ect...

Thanks!

All help are respected!

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#1

Re: Hydrostatic Testing for High Pressure System

08/31/2010 3:48 AM

What equipment is to be used to carry out the procedure? Why is there a shortage of pencils and paper at that location?

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#2

Re: Hydrostatic Testing for High Pressure System

08/31/2010 4:16 AM

The only thing I can tell you that you will need a check valve to protect guys at the test header. For diagram, you can use commonly diagram.

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Anonymous Poster
#3

Re: Hydrostatic Testing for High Pressure System

08/31/2010 11:39 AM

Oh, my Dear !!!!

You want it all readily served, don't you? If you grabbed this project, but have no idea about it, then you're probably a businessman disguised as a contractor or automation "specialist", spend some money and let a pro do his thing, you'll still have good revenues.

It would be hard for us to explain a layman such a system from ground zero; I've done it before and all I can tell you for now is:

Get a PLC with analog inputs, a linear output pressure transducer and an operator interface; write your program so you can enter models of D.U.T. (thru the OIT).

Once you've got your ladder logic correctly programmed your test cycle should be as follows:

1.-Hook up the D.U.T. to the testing fixture and close the guard.

2.-Depress the cycle buttons, this should open a valve so you build-up pressure inside the D.U.T. for a certain time.

3.-Shut off the charging valve and record any pressure drop thruout the reminder of the cycle time.

4.-Compare Analog Input data to your presets register and accordingly send a message number to the message register.

5.- Perform a memory mapping scan and display the resulting message on the O.I.T.

As per the fittings and pipes and stuff, just get them rated for more than your systems pressure.

Yahlasit

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Guru
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#4

Re: Hydrostatic Testing for High Pressure System

09/01/2010 1:21 AM

What your system is called? What is the size? Which test standard is followed?

Please learn to give better input before expecting some thing from this forum.

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Anonymous Poster
#5

Re: Hydrostatic Testing for High Pressure System

09/01/2010 5:55 AM

Aside from the other relevant comments, valves, fittings, tubing etc. for 15k tests are available from Autoclave, HIP or Butech; pumps from Autoclave, SC and Haskel.

Just Google to source!

Regards

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Anonymous Poster
#6

Re: Hydrostatic Testing for High Pressure System

09/01/2010 5:56 AM

YOU NEED THE PRESSURE RELIEF VALVE FOR THE HYDRO TEST.

THE RELIEF VALVE SHOULD BE SET(CALIBRATED) ABOVE 5% OF THE TEST PRESSURE.

THE RELIEF VALVE DIRECTLY TO BE CONNECTED WITH THE TEST MANIFOLD BY THREADING (NO BLOCK VALVES ALLOWED). DRAIN VLVE IN NEED TO DEPRESSURE THE LINE AFTER TEST.

I CANNOT UNDERSTAND FULLY WHAT YOU ARE ASKING.......

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#7

Re: Hydrostatic Testing for High Pressure System

09/01/2010 1:16 PM

You need professional help on site. Pressure testing can kill or main. If your insurance company finds out that your engineering consultant is "EngDude" or similar, on the internet, then your policy will be cancelled... You need a qualified person who can bear the responsibility. I won't.

Chris

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Anonymous Poster
#8
In reply to #7

Re: Hydrostatic Testing for High Pressure System

09/01/2010 10:37 PM

chris has it right. People coming on here without the credentials or training or title to do the setting up of systems or dangerous testing or even testing requiring certification to be safe are just flat asking for trouble. Even if the country they are from might pooh pooh it away. A dead friend, bystander or co-worker will be on your concience.

So look in the phone book in your area, hire a top rated company that specializes in what you need done. Pay the bill and know you are being safe.

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#9

Re: Hydrostatic Testing for High Pressure System

09/06/2010 5:05 AM

Thanks all!

I've already asked for help (of course with some hydraulic vendor, consultant..). Now, I'm waiting for their advise. I aware this dangerous test, so I must be do it very very carefully

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#10

Re: Hydrostatic Testing for High Pressure System

10/02/2010 4:31 AM

I got the answer!

It's simply that we cannot choose individual part (vale, connector..) and assembly them together to make and High Pressure testing kit. Because The Certification Agency will not certify it.

So the answer is: must be a complete kit include: valve, gauge, connector..., supplied by and experienced vendor and this must be come with required Certificates.

Thanks all!

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