Pneumatic test of Reinforcement Pad for Branch connection in Piping

[Jivan Dhamane]

Dear Friends   I would like to know whether Pneumatic Test of Reinforcement Pad for branch connection of Process Piping is mandatory as per ASME B31.3. I searhed but I could not found any paragraph in ASME B31.3.   Regards   Jivan Dhamane

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[Ramprasad Chari]

Irrespective of, whether it is mentioned in code or not RF pad has to be pneumatically tested otherwise how will you check leakage in "welds" associated with RF pad.

Regards

Aarpee

[S SIVASUBRAMANIAN]

Dear Mr. Jivan Dhamane,

 

As per ASME B31.3 Pneumatic test of RF pad is not mandatory, if there is any defect in RF Pad weld, during hydrotest of the main line you can find out because of the Hydrostatic pressure in main line.

 

With regards,

 

S. SIVASUBRAMANIAN

QA/QC Manager

Larsen & Toubro Kuwait Construction Company

P.O. Box.1082, Fintas 51011, KUWAIT

Mobile: 00965 66387188, 00965 94005327

Fax: 00965 66321511

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[Ganesan Nallathamby]

Hi Jivan

Check at this link

 

http://www.eng-tips.com/viewthread.cfm?qid=226096&page=6

With Warmest Regards

Ganesan

 

 

 

 

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Date: Wed, 18 Feb 2009 22:07:25 +0530
From: jivana...@yahoo.co.in
Subject: [MW:1598] Pneumatic test of Reinforcement Pad for Branch connection in Piping
To: material...@googlegroups.com

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[Vijay Raghu]

Jivan,

        This is a side bar a little..but could you tell me what is the size and material of the pipe?

 

 

Vijay

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From: material...@googlegroups.com [mailto:material...@googlegroups.com] On Behalf Of Jivan Dhamane
Sent: Wednesday, February 18, 2009 11:37 AM
To: material...@googlegroups.com

Subject: [MW:1598] Pneumatic test of Reinforcement Pad for Branch connection in Piping

[Rituraj Bose]

I don't agree with both the reply. RP wrote that it is mandatory
otherwise how we can understand the leakage? If code or client's spec
doesn't require leak test, why we have to do? Of course it is better
to do. Like better to do 100% RT, but in case of 10% requirement, we
accept balance 90% on the basis of 10%. Same way code considers that
the welding between run and branch pipes are OK. More over leaks may
be also from vent holes.
SS wrote that during hydrotest of main line, we can also find leakage
in RF pad. I think this is completely wrong, otherwise we have to
change the fitter, welder and welding inspector immediately.

Regards,
R. Bose

On Feb 19, 6:16 am, "S SIVASUBRAMANIAN" <s...@lntkuwait.com> wrote:
> Dear Mr. Jivan Dhamane,
>
> As per ASME B31.3 Pneumatic test of RF pad is not mandatory, if there is any
> defect in RF Pad weld, during hydrotest of the main line you can find out
> because of the Hydrostatic pressure in main line.
>
> With regards,
>
> S. SIVASUBRAMANIAN
>
> QA/QC Manager
>
> Larsen & Toubro Kuwait Construction Company
>
> P.O. Box.1082, Fintas 51011, KUWAIT
>
> Mobile: 00965 66387188, 00965 94005327
>
> Fax: 00965 66321511
>
>   _____  
>

> From: material...@googlegroups.com
> [mailto:material...@googlegroups.com] On Behalf Of Ramprasad Chari
> Sent: Thursday, February 19, 2009 6:55 AM
> To: material...@googlegroups.com
> Subject: [MW:1599] Re: Pneumatic test of Reinforcement Pad for Branch
> connection in Piping
>
> Irrespective of, whether it is mentioned in code or not RF pad has to be
> pneumatically tested otherwise how will you check leakage in "welds"
> associated with RF pad.
>
> Regards
>
> Aarpee
>

> On Wed, Feb 18, 2009 at 10:07 PM, Jivan Dhamane <jivanadham...@yahoo.co.in>

> wrote:
>
> Dear Friends
>
> I would like to know whether Pneumatic Test of Reinforcement Pad for branch
> connection of Process Piping is mandatory as per ASME B31.3. I searhed but I
> could not found any paragraph in ASME B31.3.
>
> Regards
>
> Jivan Dhamane
>
>   _____  
>

> Cricket on your mind? Visit the ultimate cricket website. Enter now!

> <http://in.rd.yahoo.com/tagline_cricket_1/*http:/beta.cricket.yahoo.com>

[Nishit Kumar]

Mr. Boss

 

Ur not agree with then but what u said i think its totally not acceptable how can u found leak if ur going to conduct RT. Just i want to know how can u said like tht to change the fitter, welder and welding inspector.

 

May be u have any experience in RF pad test? But in my knowledge we are doing the RF pad leak test to come to know there is any leak in stub-in or not.

 

Best Regards
 

Nishit Kumar

Piping Engineer

Benzene Xylene Toluene Unit (BTX) Project, Philippine

Daelim Industrial Co., Ltd.(S. Korea)

 

Please don't print this Email unless you really need to - this will preserve trees on planet earth.

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From: Rituraj Bose <bose...@gmail.com>
To: Materials & Welding <material...@googlegroups.com>
Sent: Thursday, February 19, 2009 9:53:29 PM
Subject: [MW:1603] Re: 1599] Re: Pneumatic test of Reinforcement Pad for Branch connection in Piping

[A D]

Dear Friends,                      In my Last fifteen years experience 2 times found in RF leakage( outer area welding not in stub to pad welding). why are we doing leak test for RF even though not mentioned in code. Any butt or fillet welds we can confirm leakage during hydro test but in RF pad outside welding soundness can't ensure during hydrotest. If any welding defects ( cracks) in pad outside welding, during process time due to temperature, vibration it will develop slowly. So there will RF pad compensation will fail , it will tends to failure. That'swhy we are doing leak test to avoid  process time failure. With regards, A.Louis Welding Inspector Singapore Hp: (65)90173970 --- On Fri, 20/2/09, Nishit Kumar <nishi...@yahoo.co.in> wrote:

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