Hi!
My interpretation is given in red
Regards
Hegde P.B.
--- On Thu, 20/9/12, Ashish Pathrabe <darkash6633@gmail.com> wrote:
From: Ashish Pathrabe <darkash6633@gmail.com>
Subject: Re: [MW:15349] API 5LD - Weld OVerlay Pipe, NDE requirements
To: materials-welding@googlegroups.com
Date: Thursday, 20 September, 2012, 2:46 PM
Dear Experts: Query:-
a) If WPS & PQR are qualified in INCONEL Overlay in Single Layer (4-5mm) .After machining it will b 3.00 mm( Please confirm/ ensure from Spec and client , does overlay of pipe require machining to maint 3mm as You will not be able to get the required chemistry in single layer in such case you require to weld in multilayer Generaly unless ask the pipe overlay is not being machined
Single layer PQR does not qualify for double layer
Please refer ASME secIX
b) Is it Qualified for Multi layer Overlay/Cladding.Double layer PQR qualifies for any no of multi layer
PLs , guide with Reference code.
With regards,
Ashish P
On Mon, Sep 17, 2012 at 11:26 AM, Muhammed Ibrahim PK <ibratech@gmail.com> wrote:
Please see the answer against the query.
Dear Experts, Kindly go through the below case and the query. Your interpretaion of the requirement of API 5LD will be helpful. Case: We have to weld overlay on the inside of 36" NPS pipe (7 Mtr Long) with Inconel 625. Minimum 2 layers to be deopisted for final CRA thickness of 3.2mm minimum. The Pipe is having a Long seam and is in accordance with API 5L PSL2. My Query: 1. Whethter these overlayed pipes can be considered as Welded Clad Pipe? If yes, then A: Pipe will be considered as weld overlayed pipe. 2. Whether the radiogrpahy in accordance with Clause 11.1.1 of API 5LD is to be done throughtout the length of the long seam before weld overlay or after weld overlay. A: No. Pipe manufacturer performs RT of weld seam. If not done, you have to perform. 3. When the 36" NPS pipe is supplied by other vendor with radiogrpahy as per API 5L PSL2 and the weld overlay is done by us on the inside of the pipe, does the clasue 11.2 of API 5LD is applicable in this case. | | | A: No | 3. What all NDE is applicable in this case.
| | | A : PT shall be performed on each layer of weld verlay (1st Layer & 2nd Layer). -- 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/ http://www.linkedin.com/groups/MaterialsWelding-122787?home=&gid=122787&trk=anet_ug_hm 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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