PIPELINE PQR /WPS API 5L Grade X60

[Jay Jay]

Dear Experts,

Need your suggestions/feedback for developing PQR /WPS for the following:-

Wet crude Sour service pipeline , ASME B31.4/31.8 , API 5 L Gr X60 ,ISO 15156 ,PSL2 , 24" ,12.7MM thickness, ASME Sec IX/API 1104 , Temperature range 0 to 90' C

My quarry:-

1)As per the applicable Aramco Standard ( SAES-W-012) , for Manual Welding process PQR can be qualified to either ASME SEC IX or API 1104, but many are insisting to use API 1104 to qualify as it is a pipeline . So kindly advise

2) Impact test required?

3)Suggested Welding Consumables for a) SMAW only b) GTAW & SMAW

4)Contractor is insisting for all pass Downhill welding using cellulosic electode E7010 for all passes,to avoid baking and storage requirements of Low hydrogen electrode(E7018).Is it possible ?

5)Hardness required for PQR?

6)Can this PQR be used for welding API 5L Grade B joints, without re-qualification?

Apologize for the lenghty quarry, waiting your valuable reponses.

Thank you 

[Ramesh]

Hi

My response for your query as below

1)  Pl refer Clause 7.2.1 of SAES-W-012, “All welding procedures for pipelines shall be qualified in accordance with API STD 1104 as required by the design codes, ASME B31.4 and ASME B31.8. 

     For other applications permitted by the design code, procedures may be qualified in accordance with ASME SEC IX.”

2)  Pl refer Clause 7.4.19 & 7.2.1 Para 2 of SAES-W-012, - Required

3) & 4 )  Pl refer Clause 6.1.5 of SAES-W-012, go with manufacturer recommendation, Aramco is requirement is as per ASME Sec II C 

5)   Pl refer Clause 7.5.1 & 7.2.1 Para 2 of SAES-W-012, - Required

6)   Pl refer Clause 7.4 – Procedure Variable of SAES-W-012

Thanks and Regards

Rameshkannan Devaraj

"What you have learned is a mere handful; What you haven't learned is the size of the world – Avvaiyar"

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[Lakshmankumar Bayyana]

Hi,

In addition to that, its not suggestible to work with 7010 for all passes as it is economically not viable

Also 7018 will give good progress (high deposition rate) compare to 7010.

Your PQR may get qualified for 7010 but not advisable 

Thanks and Regards 

Lakshman kumar. B 

+91 9440031459

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[Sajeev P]

Hi

I agree with Mr. Rameshkannan Devaraj except for Answer for question 1. As per the latest revisions ( 2013, 2016 and 2018) Para 7.2.1 states that " Welding procedures for pipelines designed to ASME B 31.4 or ASME B 31.8 shall be qualified with API STD 1104 or ASME SEC IX". Please refer your project standard cut off date.

Regards,

Sajeev

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[Ramesh]

Hi Sanjeev

Noted. 

7.2.1 has been modified as above in 2013 edition. i was referring 2012 edition. 

Next revision they mentioned july 2018. 

Thanks

Sajeev

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