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[MW:676] Re: [MW:/] tolerance for CE

By Materials & Welding
The CE is an essential variable as per BS EN 288-9 & BS 4515 (Cross country pipeline). The acceptable variance is -0.06 to + 0.03 from the CE of material used for qualification.
 
For Sour service conditions when NACE MR 01 75 (ISO 15156-3) is applicable, it is the responsibility of the fabrication/ manufacturing company to ensure that, necessary controls are in place to restrict  the hardness to 22HRC maximum. In order to limit this (Hardness) without any PWHT, restrictions( essential variables) includes/ shall be extended (from the normal applicable welding codes) to chemistry & Heat treatment conditions of material(s) used for PQR &  materials to be used for production.
 
It is normally found that CE, Heat treatment condition & thickness plays a major role final hardness of weld/ HAZ.
with best regards,
Sanjeevan
GPS
----- Original Message -----
Sent: Wednesday, March 19, 2008 8:05 AM
Subject: [MW:/] tolerance for CE


Hi guys

What is the tolerance given in the AMERICAN CODES for CE value for applicability of WPS and welder qualifications? Is it an essential variable? I think in British or japanese standards its given + 0.003 % Max.

Appreceiate any feed back.

Thanks and Regards


On Tue, 18 Mar 2008 rajesh patel wrote :
>
>dear Friebds,
>
>I am a silent but regular reader of the mails shared
>by group memebers. I am greatful to receive such
>valuable information from the various people from
>every corners of the world. Through this group,I even
>recd some mails from my old couligues with whom i lost
>all contacts since last so many years.
>
>I may not be replying or sharing anything but i am
>very much interested to receive such mails. Whenever
>it feels necessary, I will definately contribute.
>
>Pl continue to send me mails.
>
>Regards,
>
>Rajesh B. Patel
>QC Engineer
>Adyard Abudhabi LLC
>
>--- "Bathula Raghuram (Mumbai - PIPING)"
><R.Bathula@ticb.com> wrote:
>
> > No exchange of information since last 1 week, that's
> > why you were not
> > receiving any mails.
> >
> > Appreciate your concern and request members for
> > their active
> > participation.
> >
> >
> >
> > -----Original Message-----
> > From: donboscomarine@vsnl.net
> > [mailto:donboscomarine@vsnl.net]
> >
> > Sent: Tuesday, March 18, 2008 12:10 PM
> > To: materials-welding@googlegroups.com
> > Subject: Re: [MW:659] Bolt Length in ASME B31.3
> >
> >
> >
> > Dear Mr. Bathula Raghuram,
> >
> >
> >
> > We are not getting any communication since 12th
> > March, 2008. Before
> > that, we were witness to a very good exchange of
> > information. Any reason
> > for non-receipt of communication or is it just that
> > there has been No
> > Exchange? Will like to know the cause. We are
> > impressed by the quality
> > of information exchange and consider ourselves lucky
> > to have been a
> > memebr of this group.
> >
> >
> >
> > We will be obliged if a reply is sent ASAP.
> >
> >
> >
> > Thanks & B. Rgds.
> >
> >
> >
> > G. A. Soman
> >
> > Principal
> >
> >
> >
> >
> >
> >
> >
> >
> >
> > DON BOSCO MARITIME ACADEMY
> >
> > Premier Automobiles Road,
> >
> > Kurla West, Mumbai 400070
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