Hi Pradeep,
Please find the point wise reply in blue.
Regards,
Ankur.
On 7/10/10, pgoswami@sympatico.ca <pgoswami@sympatico.ca> wrote:
>
>
> Hi Ankur,
>
>
>
>
> Is this a new drum for fabrication ?
- No, These are the regular equipments used in refineries.
> What's the material thickness?
- The thickness varies from 22 mm at top to 50 mm bottom. The size of the equipment is 9.8 meters ID x 45 m Length. One long seam is roughly 3 meters in length.
> What's the welding process to be adopted-SMAW+ SAW or GMAW+SAW or SMAW only.
-The welding process used is SMAW with vertical uphill progression.
> Do you have any standards for weld edge prep?
- Yes, the standard are fixed.
> What're the consumables recommended in the fabrication drawings/ design
> specifications.
> The base material & consumable is of LAS.
>
> Appreciate if you could provide those info.
>
>
>
> Thanks
>
>
>
> Pradip Goswami,P.Eng.
> Welding & Metallurgical Engineer/Specialist
> Ontario Power Generation Inc.
>
>
>
>
> Date: Fri, 9 Jul 2010 22:49:19 +0530
> Subject: [MW:5919] Distortion in Coke drums
> From: prince.ankur@gmail.com
>
>
>
> Dear members,
>
> What welding sequence should be followed to control the bow type distortion
> during long seam welding in coke drums?? If any one has established any
> procedure please let me know:
> 1. The type of weld edge preparation
> 2. The diameter of electrode to be used
> 3. Any stiffners to be welded during setup
>
> Regards,
> Ankur
>
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>
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>
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