Re: [MW:16981] Pneumatic Leak test required for Reinforcement Pad covering Pressure containing welds

[gohil tushar mansukhlal]

Dear friend as my understanding it means for the branch connection having RF pad to be tested by pneumatic test.

Thanks with Regards From

TUSHAR GOHIL

Mobile No: 9510918745 & 9901687899


From: Saravanan Murugappan <saravanan...@gmail.com>
Sent: Thu, 07 Mar 2013 14:29:22
To: material...@googlegroups.com
Subject: Re: [MW:16981] Pneumatic Leak test required for Reinforcement Pad covering Pressure containing welds

MrAjay,

My query is different.Whether ITP(Inspection Test Plan) Mentioning :

"Pneumatic Leak test required for Reinforcement Pad covering Pressure containing welds"

My question is RF Pad covering pressuring containing weld means what????? 1.Whether weld seams under RF Pads?or 2. Branch connections  contains RF pad?

Which is correct?

On Wed, Mar 6, 2013 at 10:05 AM, ajay pathak <ajaypa...@gmail.com> wrote:

Dear Sir,

 

Please note that Leak test of reinforcing pads shall be performed in accordance with the ASME Code Section V. Each reinforcing pad shall have one test hole, tapped for 1/4 inch NPT, and located at least 45 degrees off the longitudinal axis of the vessel. This applies to each pad or segment of a multiple piece pad. The welds of each pad or segment shall be given an air and bubble solution pressure test before the test of the vessel. The test pressure shall be at least 1.0 bar (g) but shall not exceed 1.4bar (g). The test holes shall be left open for use as telltale holes. 

 

Regards,

Ajay Pathak

On Tue, Mar 5, 2013 at 10:44 PM, Saravanan Murugappan <saravanan...@gmail.com> wrote:

Dear Friends,

1.As the above stated subject;can anyone explain me Briefly When it is required??

2.Contractor Saying that they wont do Pneumatic Leak test  for Branch connections consists of RF Pads.They are objecting Because "They do leak test whenever the longitudinal or circumference weld seams covering the RF pads.(That means "Weld seams " when it comes under RF pads.)

3.Is this Contractor Query about this valid?...and Plz guide me  to follow the exact requirements.

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[HAREESH K V]

Mr.Saravanan,

Attaching herewith a drawing, made as per my understanding.

----------------------
Hareesh K V
+91-9447625012

[HAREESH K V]

Mr.Saravanan,

Please see the picture of Stub on weld also. In that also the RF pad is covering the pressure containing weld.

So as per my opinion pneumatic test is needed based on your ITP

Experts please comment if i am wrong

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