Hi,
UCS-56 2 (c) 5 is for vessel under UW 2 (Lethal service) and it is only for CRO not for base metal.
In your case your base metal thickness is 60mm(more than 32mm). if your vessel under UW2,you can do PWHT of vessel without CRO and do CRO after PWHT with Preheat as specified in UCS56 2 (c) 5.
Thanks & Regards,
(Karthik)
Karthikeyan.S QA/QC Manager 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 Wed, 1/5/11, rinshad abdul rahman <rinshad043@gmail.com> wrote:
From: rinshad abdul rahman <rinshad043@gmail.com>
Subject: Re: [MW:9096] PWHT Requirement For CRO
To: materials-welding@googlegroups.com
Date: Wednesday, January 5, 2011, 6:06 PM
Dear sir, Thanks for your replay But what about the notes in UCS-56 2 (c) 5 that is if preheat (95 deg c) is there PWHT is not mandatory for thickness greater than 33mm On Wed, Jan 5, 2011 at 1:04 PM, Karthik <karthik6684@yahoo.com> wrote: Hi,
Yes.You should do PWHT of SA516 with CRO as per ASME Sec,VIII,DIV 1,UCL34.Please find below the extraction.
UCL 34
(a) Vessels or parts of vessels constructed of base material
with corrosion resistant integral or weld metal overlay
cladding or applied corrosion resistant lining material shall
be postweld heat treated when the base material is required
to be postweld heat treated. In applying these rules, the
determining thickness shall be the thickness of the base
material.
When the thickness of the base material requires postweld
heat treatment, it shall be performed after the application
of corrosion resistant weld metal overlay cladding or
applied corrosion resistant lining unless exempted by the
Notes of Table UCS-56.
(b) Vessels or parts of vessels constructed of chromium
stainless steel integral or weld metal overlay cladding and
those lined with chromium stainless steel applied linings
shall be postweld heat treated in all thicknesses, except
vessels that are integrally clad or lined with Type 405 or
Type 410S and welded with an austenitic electrode or nonair-
hardening nickel–chromium–iron electrode need not be
postweld heat treated unless required by (a) above.
Thanks & Regards,
(Karthik)
Karthikeyan.S QA/QC Manager 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 Wed, 1/5/11, rinshad abdul rahman <rinshad043@gmail.com> wrote:
From: rinshad abdul rahman <rinshad043@gmail.com>
Subject: [MW:9091] PWHT Requirement For CRO
To: materials-welding@googlegroups.com
Date: Wednesday, January 5, 2011, 3:49 PM
Dear all,
I just want to know that whether PWHT is required for CRO on SA516 Gr. 70 (60 mm thick) on the same part we need do SMAW+SAW weld with 60 mm nominal size (construction is as per ASME BPV SEC VIII DIV 1)
-- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ 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.
|
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
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.
-- To post to this group, send email to materials-welding@googlegroups.com To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com For more options, visit this group's bolg at http://materials-welding.blogspot.com/ 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.
|
--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at
http://materials-welding.blogspot.com/ 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.
No comments:
Post a Comment