Saturday, July 10, 2010

Re: [MW:5932] Distortion in Coke drums

Hi Pradeep,
 
Please find the point wise reply in blue.
 
Regards,
Ankur.
 
>
>
> 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
>
>
>
> 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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> For more options, visit this group's bolg at
> The views expressed/exchnaged in this group are members personel views and
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> w.r.t. applicable code/standard/contract documents.
>
 

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The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

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