If the vessel is to be PWHted due its service, then along with Pads it gets PWHT ed.
Otherwise, just for attaching the pads , that too non pressure retaining purpose, there is no requirement to do PWHT.
Tagore
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Praveen Kumar
Sent: Wednesday, July 07, 2010 2:32 AM
To: karthik6684@yahoo.com; materials-welding@googlegroups.com
Subject: Re: [MW:5886] VESSEL Reinforcement pad Installation
Dear Mr.Karthik,
Thanks for your explanation.
This is a saddle pad and it's POST WELD HEAT TREATMENT is required or not for this vessel as per Std.
Pad MOC - SA 516 Gr.60 (10 mm thkX150 wideX555 long)
pls.advise me the above "PWHT" aspects.
Thanks & Regards,
Praveen Kumar
On Wed, Jul 7, 2010 at 7:59 AM, Karthik <karthik6684@yahoo.com> wrote:
| Hi, The Contractor is right,Normally Pneumatic test will be done of Re-Inforcement Pad of Nozzles only.In your case this is just a pad plate to avoid shell material directly welded to another kind of material.No need to do Pneumatic test on this. Thanks & Regards, (karthik) Karthikeyan.S Getabec Energy Co.,Ltd. 379,Moo6,Soi8,Nikhomphatana, Rayong-21180, Thailand. Phone: 0066 38 897035-8 (Off) Fax: 0066 38 897034 Hand Phone: 0066 892512282 --- On Tue, 7/6/10, Praveen Kumar <praveenkumar.sek@gmail.com> wrote:
Dear members, Gas Discharge Volume Bottle (508 O.DX2083 LG) Reinforcement pad -2 nos are missing which is used for sitting the vessel on the roller support This pad is located in between Vessel & roller Support. Fluid service: Gas The Pad Re-Installation will be rectified at site. Contractor says that there is NO POST WELD HEAT TREATMENT for this vessel also this is a saddle pad and doesn’t require pneumatic test of pad which is acceptable or not. Pls. clarify this issue. Thanks & Regards, Praveen Kumar
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Regards,
Praveen Kumar
Mechanical Engineer
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