Its so because the design is guided by buckling and not induced stress.
"Somesh Kumar Pandey" <Somesh.Kumar@kbr.com>
Sent by: materials-welding@googlegroups.com 03/30/2009 11:58 AM
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Devang,
As per ASME it is no where specified for external pressure design to use
the staggered intermittent weld to fabricate the stiffeners. Hence, in
my opinion it should not be used. You have to meet the required moment
of inertia for the provided section. It is advisable to fabricate the
stiffener with continuous welding only.
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 1:48 PM
To: materials-welding@googlegroups.com
Subject: [MW:1841] Re: 1838] Fabricated Stiffeners
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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