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vesselguy (Petroleum) (OP)
15 Jul 08 21:59
Hi,
I'm trying to figure out what is the difference between API-5L PSL1 and PSL2.   Now that IHS won't allow you to save nor print the document, I have to read it on line and I find it very difficult to flip pages to read.  I have not been able to figure out what is the key difference between the two specifications.  I would appreciate it if some one can give me a quick run down or direct me to a page where I can read up on it.  Thanks.
vesselguy (Petroleum) (OP)
15 Jul 08 22:06
I just found a thread 809-43564 that asked the same question in the past but did not have much of a respond.  

Is there a quality difference between the two?  Is one better for sour service than the other?
SJones (Petroleum)
16 Jul 08 0:15
In the 43rd edition (2004) look at Appendix J entitled "Summary of differences between PSL 1 and PSL 2". If you are using ISO 3183 2007 (the new API 5L!!!) then some explanation is given in the Introduction.  Regarding sour service, look at Annex H of ISO 3183 2007, it is entitled "PSL 2 pipe ordered for sour service".

Steve Jones
Materials & Corrosion Engineer
http://www.linkedin.com/pub/8/83b/b04
 

vesselguy (Petroleum) (OP)
16 Jul 08 1:20
Thank you Steve for the tip. I'd review those sections tomorrow in detail.

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