[MW:1846] Re: 1838] Fabricated Stiffeners

Hi Devang,

I don't think you can.

In the fig UG-29.1 of ASME VIII-1, the term 'butt-welding' is used for stiffener to stiffener welding.

Also, UG-29 (e) states that

Any internal stays or supports used as stiffeners
of the shell shall bear against the shell of the vessel
through the medium of a substantially continuous ring.

The word 'substantially continuous ring' is important here.

Thanks

Johnson Madukayil
Mechanical Engineer
CCI Thermal Technologies Inc.
2721, Plymouth Drive
Oakville, ON L6H 5R5
Canada
 

On Mon, Mar 30, 2009 at 1:48 AM, Devang Patel <devangp@inoxindia.com> wrote:

Thanks, Somesh,

Yes, you are write but my question is can we do staggered intermittent weld
to fabricate the stiffeners?

ASME Sec. VIII Div-1 told about the stiffeners to shell welding only.


Regards,


Devang Patel
Manager Engineering

INOX INDIA Ltd.
Ph :+91-265-3056392-3056100
Fax :+91-265-2333398-2341449
email : devangp@inoxindia.com
www.inoxindia.com

----- Original Message -----
From: "Somesh Kumar Pandey" <Somesh.Kumar@kbr.com>
To: <materials-welding@googlegroups.com>
Sent: Monday, March 30, 2009 10:45 AM
Subject: [MW:1840] RE: 1838] Fabricated Stiffeners



Dear Devang,

Fabricated stiffeners can be used in external pressure design of shell
of
pressure vessel as per ASME Sec. VIII Div.1. You can refer UG -29 , Fig.
UG 29.1 , UG-30 & Fig. UG-30 of ASME Sec. VIII Div.1 for more details on
the acceptable method of attaching stiffener rings

Regards

Somesh Kumar Pandey
KBR Energy & Chemicals
79 Anson Road #20-01
Singapore 079906
Office: +65 6210 7459
Fax: +65 6210 7250
Email: Somesh.Kumar@kbr.com

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of Devang Patel
Sent: March 30, 2009 12:24 PM
To: materials-welding@googlegroups.com
Subject: [MW:1838] Fabricated Stiffeners


can we use fabricated stiffeners in external pressure design of shell of

pressure vessel?

If, yes than please tell, can we use staggered intermittent weld to
fabricate T or Angle?

Please reply.


Regards,


Devang Patel
Manager Engineering

INOX INDIA Ltd.
Ph :+91-265-3056392-3056100
Fax :+91-265-2333398-2341449
email : devangp@inoxindia.com
www.inoxindia.com



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