Re: [MW:28906] RE: PQR Query

Greetings,

Referring to clause 7.4.4 of SAES-W-012, i hope you can proceed doing combinations of different grades but same P no / G no, as your case is P1 G2, still you can do a qualifications as para 7.4.4 allows P1 / G3 or 4, using combinations with P1 / G1 or G2, which means any P1-G2 also comes under API 5L X60, hence your case SA 350 LF 2 vs API 5L X60 can be fused for PQR, which will qualify all lower strength API grades (including grade b) and all SA 350 LF 2 Equivalent.

Note: Specific grade, which means qualification to be done, we cannot waive equivalent for API 5L X60 when not demonstrated in PQR, but we can do combinations which is the fact demonstrated in PQR.

Discussion open to personel interpretion.

Thanks.

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From: PGoswami

Date: 2019-01-13 20:58

To: 'Revdiwala Darshan'

CC: materials-welding@googlegroups.com

Subject: [MW:28902] RE: PQR Query

Darshan,

 

Both grades are P No 1, Gr 2, according to ASME Sec-IX. However SAES-W-012 imposes the following restriction, which is more binding. In that case PQR needs to be qualified/requalified on API 5L X60 . Hope this answer would clarify your doubt.

 

Thanks.

 

P.Goswami.P.Eng, IWE.

Independent Welding & Metallurgical Specialist

Saudi Aramco: Designated Project Welding Engineer(DPWR)& Quality Management Personnel

Linkedin: https://www.linkedin.com/in/pradip-goswami-2999855/

Email:pgoswami@quickclic.net,pradip.goswami@gmail.com

 

From: Revdiwala Darshan [mailto:darshanmrevdiwala@gmail.com]
Sent: January 13, 2019 5:36 AM
To: pgoswami@quickclic.net
Subject: PQR Query

 

Dear Sir,

Can you  suggest on PQR qualification.

 

I am having Forging of SA 350 LF 2 grade in pipe shape and my production joint material is API 5L X60.

 

Now can i qualify PQR with avilable material for production joint. Is there any restrictions as per SAES-W-012 like qualification material shold be from API grade only.

 

Regards,

Darshan

+966-550257629

 

 

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