Addendum 2 – Welded Steel Tanks for Oil Storage
Amendment by American Petroleum Institute, 11/01/2001

Addendum 3 – Welded Steel Tanks for Oil Storage
Amendment by American Petroleum Institute, 09/01/2003

Welded Steel Tanks for Oil Storage – Addendum 4 (Replacing Pages Only)
Amendment by American Petroleum Institute, 12/01/2005

API Welded Steel Tanks for Oil Storage, 12th Edition, Includes Errata (2013) and Addenda 1 (2014), Addenda 2 (2016), and Addenda 3 (2018) / Tank Inspection, Repair, Alteration, and Reconstruction, 5th Edition Set
standard by American Petroleum Institute, 2014

Cathodic Protection of Aboveground Petroleum Storage Tanks
standard by American Petroleum Institute, 12/01/1997

Lining of Aboveground Petroleum Storage Tank Bottoms
standard by American Petroleum Institute, 12/01/1997

Tank Inspection, Repair, Alteration, and Reconstruction, 1st Edition
standard by American Petroleum Institute, 01/01/1991

Tank Inspection, Repair, Alteration, and Reconstruction, 2nd Edition, Includes Addendum 1 (2010), Addendum 2 (2012)
standard by American Petroleum Institute, 12/01/1995

Tank Inspection, Repair, Alteration, and Reconstruction, Errata 2
Amendment by American Petroleum Institute, 02/01/1996