RE: [MW:11501] Differance between PSL1 AND PSL2 PIPE/SHORT LENGTH JOINTES PIPE ISSUE/PSL2 CARBON STEEL PIPE

Dear all,

 

After performing major inspection activities on API 5 L pipes & I have clear understanding regarding Major difference between the API 5L- PSL 1 & PSL 2 Pipes.

 

Note:-

1)  Major difference is, In case of PSL1, Impact test is not mandatory and in case of PSL2, Impact test is mandatory at minimum 0 deg C.

2)  Further, in case of PSL2 there is a range of Yield Stress and Tensile Stress. In case of PSL1 there is a minimum value of Yield Stress and Tensile Stress
3)  API 5L PSL -1 is normally used for category D or normal service fluids. i.e. cooling water, utility water, air etc services and not required many of the testing requirements, where as PSL-2 pipe is used for category M fluids i.e. Hydrocarbons, Sour etc., requiring NACE compliance, hence more costly.
 
 

 Also pls go thru go through the attachment & also API 5L for better understanding.

 

Regards,

Rupesh Anant Jambhale
Pr. Engineer, Inspection Dept
Oil, Gas and Petrochemicals (India)

Mott MacDonald Pvt Ltd
Kothari House, CTS 185
Off Andheri Kurla Road
Near Kohinoor Continental Hotel
Andheri (E) Mumbai - 400 0059
India

T  +91-22 30835000   (SwitchBoard)
T  +91-22 30835222   (Direct) 
F  +91 22 28253779

Reply to : rupesh.jambhale@mottmac-india.com
Visit us  : www.mottmac.com

---

From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of sajidalam mohd.
Sent: 28 June 2011 05:12
To: materials-welding@googlegroups.com
Subject: [MW:11497] Differance between PSL1 AND PSL2 PIPE/SHORT LENGTH JOINTES PIPE ISSUE/PSL2 CARBON STEEL PIPE

DEAR EXPERTS                  WHAT IS DIFFERANCE BETWEEN PSL1 & PSL 2 CARBON STEEL PIPE.   I AM DOING INSPECTION FOR PSL2 CARBON STEEL PIPES (BY SAW PROSESS AS PER API5L).   OUR PIPE'S LENGTH ACCEPTANCE CRITERIA IS 12 METER TO 18 METER.     MANUFACTURER HAS SO MANY SHORT LENGTH PIPES LIKE AS 8 METER, 7 METER & 10 METER.   HE WANTS TO JOINT TWO SHORT LENGTH PIPES BY SMAW PROCESS.   I WANT TO ASK THAT IF MANUFACTURER IS JOINING TWO SHORT LENGTH PIPES THAT PIPE WILL BE ACCEPTED AS PER API5L FOR PSL2.   MANUFACTURER IS SAYING THEY HAVE APPROVAL FROM CLIENTS ABOUT ABOVE MENTIONED ISSUE.ME SHOULD GIVE RELEASE FOR THAT PIPES OR NOT.   IT IS ALLOW OR NOT/AND WHERE IT IS MENTIONED THAT FOR PSL2 PIPES IF LENGTH ACCEPTANCE CRITERIA IS MENTIONED BY CLIENTS/API5L AFTERTHAT MANUFACTURER WILL JOIN TWO SHORT LENGTH PIPE AND HE WILL PROCESS THAT PIPES AS  PER PSL2  PIPES.     REGARDS MOHAMMAD SAJID ALAM INSPECTION ENGINEER KUWAIT

--
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding+unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email
______________________________________________________________________

______________________________________________________________________
This email has been scanned by the MessageLabs Email Security System.
For more information please visit http://www.messagelabs.com/email
______________________________________________________________________