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What Is The Difference Between Api 521 Sixth Edition & Seventh Edi

api standards codes psv sizing chemical engineering process engineering

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#1 Murtaza Lashkerwala

Murtaza Lashkerwala

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Posted 13 May 2024 - 02:13 AM

Dear Members,


Does anybody know what are the changes API has made between its Sixth & Seventh Edition of API 521,


In general does API specify anywhere what changes are made in the latest editions as compared to the previous ones.



Best Regards

#2 latexman


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Posted 13 May 2024 - 06:16 AM

Each revision, API creates a "redline" version that shows changes from the previous version.


Attached File  API 521 Redline.png   124.56KB   3 downloads


Go get you one.

#3 shvet1


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Posted 13 May 2024 - 10:59 PM

maybe this will help


Edited by shvet1, 13 May 2024 - 11:00 PM.

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