API-650 Complete Document History
Welded Tanks for Oil Storage

Complete Current Edition:
   13TH EDITION - Welded Tanks for Oil Storage - March 1, 2020

Obsolete Revision Information:
   12TH EDITION ADDENDUM 3 - ADDENDUM 3 FOR 12TH EDITION - Aug. 1, 2018
   12TH EDITION ADDENDUM 2 - ADDENDUM 2 FOR 12TH EDITION - Jan. 1, 2016
   12TH EDITION ADDENDUM 1 - ADDENDUM 1 FOR 12TH EDITION - Sept. 1, 2014
   12TH EDITION - Welded Tanks for Oil Storage - March 1, 2013
   11TH EDITION ERRATA - ERRATA FOR 11TH EDITION - Oct. 1, 2011
   2011 ADDENDUM - ADDENDUM 3 FOR 11TH EDITION - Aug. 1, 2011
   2009 ADDENDUM - ADDENDUM 2 FOR 11TH EDITION - Nov. 1, 2009
   2008 ADDENDUM - ADDENDUM 1 FOR 11TH EDITION - Nov. 1, 2008
   11TH EDITION - Welded Tanks for Oil Storage - June 1, 2007
   10TH EDITION ERRATA - ERRATA FOR 10TH EDITION - April 1, 2007
   10TH ADDENDUM 3 - ADDENDUM 2 FOR 10TH EDITION - Sept. 1, 2003
   10TH ADDENDUM 2 - ADDENDUM 2 FOR 10TH EDITION - Nov. 1, 2001
   10TH ADDENDUM 1 - ADDENDUM 1 FOR 10TH EDITION - March 1, 2000
   ERRATA - ERRATA FOR 10TH EDITION - Jan. 14, 2000
   10TH EDITION - INCLUDES ADDENDUM 1 & 2 - Nov. 1, 1998
   9TH EDITION ADDENDUM 4 - ADDENDUM 4 FOR 9TH EDITION - Dec. 1, 1997
   9TH EDITION ADDENDUM 3 - ADDENDUM 3 FOR 9TH EDITION - Dec. 1, 1996
   9TH EDITION ADDENDUM 2 - ADDENDUM 2 FOR 9TH EDITION - Dec. 1, 1995
   9TH EDITION ADDENDUM 1 - ADDENDUM 1 FOR 9TH EDITION - Dec. 1, 1994
   9TH EDITION - WELDED STEEL TANKS FOR OIL STO - July 1, 1993
   1988 EDITION - WELDED STEEL TANKS FOR OIL STO - Nov. 1, 1988