API-620 Complete Document History
Design and Construction of Large, Welded, Low-Pressure Storage Tanks

Complete Current Edition:
   12TH EDITION ADDENDUM 3 - 12TH EDITION WITH ADDENDUM 3 INTERFILED - Sept. 1, 2021

Obsolete Revision Information:
   12TH EDITION ADDENDUM 2 - ADDENDUM 2 FOR 12TH EDITION - April 1, 2018
   12TH EDITION ADDENDUM 1 - ADDENDUM 1 FOR 12TH EDITION - Nov. 1, 2014
   12TH EDITION - Design and Construction of Large, Welded, Low-Pressure Storage Tanks - Oct. 1, 2013
   2012 ADDENDUM - ADDENDUM 3 FOR 11TH EDITION - March 1, 2012
   11TH EDITION ADDENDUM 2 - ADDENDUM 2 FOR 11TH EDITION - Aug. 1, 2010
   11TH EDITION ADDENDUM 1 - ADDENDUM 1 FOR 11TH EDITION - March 1, 2009
   11TH EDITION - DESIGN & CONSTRUCTION OF LARGE, WELDED, LOW-PRESSURE STORAGE - Feb. 1, 2008
   AMENDMENT 1 - AMENDMENT 1 FOR 10TH EDITION - June 1, 2004
   10TH EDITION - DESIGN & CONSTRUCTION OF LARGE - Feb. 1, 2002
   9TH EDITION ADDENDUM 3 - ADDENDUM 3 FOR 9TH EDITION - Dec. 1, 1998
   9TH EDITION ADDENDUM 2 - ADDENDUM 2 FOR 9TH EDITION - Dec. 1, 1997
   9TH EDITION ADDENDUM 1 - ADDENDUM 1 FOR 9TH EDITION - Dec. 1, 1996
   9TH EDITION - DESIGN & CONSTRUCTION OF LARGE - Feb. 1, 1996
   8TH EDITION ERRATA - DESIGN & CONSTRUCTION OF LARGE - Aug. 1, 1992
   8TH EDITION - DESIGN & CONSTRUCTION OF LARGE - June 1, 1990
   1986 EDITION - DESIGN & CONSTRUCTION OF LARGE - Jan. 1, 1986