Re: Re: [MW:28845] Re: As per B31.3 2012 & Section IX

Hi,

Firstly you should check with your project approved line class / NDE matrix and PMS to know all the requirements, i suggest you to check with competant aramco approved welding engineer, but still find the clarity from my side and revert back if anything.

 a) What is the Base metal thickness Range and  Deposited weld metal range as per B31.3 for GTAW & B31.4 for SMAW.

REPLY

You shall check the welding code not construction code, for ASME IX check QW-451.

 b) As Per ARAMCO & Sec IX- AWS No(Class) ER 70S-2 / 3 can we use in WPS . but in PQR they have used only ER70S-6

REPLY

Yes agree with trailing mail ER70S-6 may increase hardness that is why there has been a  restriction in SA project for sour service, check latest SAES-W-011 and SAIC W 2031 of A8 or A9, still ER 70S-2 or 70S-3 may incorporate if you have already got your 70S-6 PQR / WPS approval with CSD, if not then it may restrict, i beleive CSD will not approve ER-70s-6 filler for sour service.

1) For Sour Service what are the test we required and what is the minimum and  maximum thickness qualification for WPS.

REPLY

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From: Kannayeram Gnanapandithan

Date: 2019-01-01 18:55

To: materials-welding

Subject: Re: [MW:28844] Re: As per B31.3 2012 & Section IX

Why u have chosen ER70S6 for GTAW which is having high Mn,Si, which may increase the hardness. 

On Tue, 1 Jan 2019 5:48 pm Kiran <karan.hbl@gmail.com wrote:

Dear Siraj,

I have not understand your answer,

Please refer below tables i have mentioned PQR Ranges and also i mentioned My WPS Ranges.

Please check WPS table what i have given range is correct or not, and if not correct please tell me as per code.

        

PQR
Base Metals :	SA 105 to API 5L
P No :	1	Group No:1&2		To	P No :	1	Group No:1&2
Thickness :	25.4mm
Filler Metals:	ER70S-6 GTAW	&E 7018 SMAW

                                                               

WPS for Sour
	Welding Process :  GTAW+SMAW
CODE:	IX	ASME : B31.3,B31.4 &SAES- W-011/012
QW-403
P No :	1	Group No:1&2		To	P No :	1	Group No:1&2
Base metal Thickness Range :(B31.3)				Groove: 5mm to ≤20mm
Base metal Thickness Range :(B31.4)				Groove: 5mm to ≤ 38mm
Deposit Weld metal  :(B31.3)			GTAW: Max 6mm,SMAW: Max 14MM
Deposit Weld metal  :(B31.4)			GTAW: Max 6mm,SMAW: Max 32MM
Maximum Pass Thickness:			≤13mm
QW-404
	GTAW		SMAW
SFA No -	5.18		5.1			<p class="MsoNormal" style="margin-bottom:0in;margin-bottom:.0001pt;line-height: normal

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