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Re: [MW:24353] Digest for materials-welding@googlegroups.com - 3 updates in 3 topics

By Materials & Welding

Dear Sir,
Pls find attached photographs for the defects in new Vessel.
Ni. Cr.Weld overlay done on Circ seam and log seam. During DPT I found the defects which shown in Photographs and these defects are LOF between Weld Overlay and Cladded plate.(LOF at Toe). Due to not proper edge preparation (sqaure Edge) and low Heat input in GMAW process Edges not fused properly.

After getting these defects Manufacturer repaired the defects without my Notice at Night time and offered for PT. 
After Repair and Penetrant examination no such defects were found but same kind of defects found after one year when Vessel Inspection carried out  before installation.

So My question is that how Manufacturer can mask the defects temporarily? is it possible to mask such defects to cheat inspectors?

Pls reply as soon as possible.
Special Request to Raghram, and P Goswami

On Sun, Feb 21, 2016 at 9:08 AM, <materials-welding@googlegroups.com> wrote:
Shashank Vagal <nach_sam@yahoo.com>: Feb 20 04:32PM

Again, let me stress this point: to master these techniques you need lot of on the job experience and technical acumen developed therefrom BR,Shashank C Vagal 
 
 
From: Prasad Ghanekar <prsgne@gmail.com>
To: materials-welding@googlegroups.com
Sent: Saturday, 20 February 2016 10:12 AM
Subject: Re: [MW:24330] RE: 24309] PAUT & TOFD Level III

As I understand PAUT & TOFD are NDE UT technics and not NDE methods. Hence NDE Level III in UT is required with training in special technics.Regards
P. V. GhanekarOn 17 Feb 2016 09:39, "pgoswami" <pgoswami@quickclic.net> wrote:
 
Hi Mostafa, These techniques are very specialized techniques. Not allNDE techs are up to speed with both of these techniques. Please see some guidelinesfrom the BINDT on the same. I'm not sure , where you're located, you may checkwith the local high profile NDE Schools or Companies, who'll have thosepersonnel in their team Thanks.  Pradip Goswami, P.Eng,IWE
Independent Welding & Metallurgical Engineering Specialist &Consultant.
Ontario,Canada.
ca.linkedin.com/pub/pradip-goswami/5/985/299pgoswami@quickclic.netpradip.goswami@gmail.com From:materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com]
Sent: Tuesday, February 16, 20168:25 AM
To: Materials & Welding
Subject: [MW:24309] PAUT &TOFD Level III DearSir,Kindlyclarify if  there is level III in PAUT&TOFD or not. our client insistsfor level III in PAUT&TOFD for PAUT procedure review and level II inPAUT&TOFD to carry out the work. i searched many but i found NO body hasthis certificates. are these certificates true? and how can i get it?--
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Mohamed Elsahhar <mohamed.elsahhar2000@gmail.com>: Feb 20 07:14PM +0200

dear members ,
 
i asked if repair codes or standers of pressure equipment allow to
repair metal loss in pressurized equipment with cold weld (BELZONA) if
allow it please give me your reference depending to ASME /API codes or
STD ,thanks for your time
 
Best Regards
QC/QA eng.
m.elsahhar
israr ahmed <ahmedisrar.nm@gmail.com>: Feb 20 10:17AM +0400

Dear all
I witnessed DPT on incolloy 825 Weld Overlay and found some defects Like
LOF, Porosity and undercuts, Defects were repaired by Subcontractor and
offered and found acceptable but after one year again DPT carried out and
found all the defects like porosity, LOF etc.what may be the reason.
 
Is it possible that Subcontractor used wrong welding procedure to carry out
the repair and after some period defects gets open.
 
Pls convay your ideas for the above.
 
--
Israr Ahmed Noor Mohammed
+919930308261
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Israr Ahmed Noor Mohammed
+919930308261

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