ASTM-A531 › Complete Document History
Standard Practice for Ultrasonic Examination of Turbine-Generator Steel Retaining Rings
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2018 R23 EDITION - REAPPROVED IN 2023 - April 17, 2023
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Obsolete Revision Information: |
2018 EDITION - Ultrasonic Examination of Turbine-Generator Steel Retaining Rings - May 1, 2018
2013 EDITION - Ultrasonic Examination of Turbine-Generator Steel Retaining Rings - June 1, 2013
2012 EDITION - Ultrasonic Examination of Turbine-Generator Steel Retaining - April 15, 2012
1991 R06 EDITION - REAPPROVED IN 2006 - March 1, 2006
1991 R96 EDITION - REAFFIRMED IN 1996 - Dec. 15, 1991
1991 R01 EDITION - REAPPROVED IN 2001 - Dec. 15, 1991
1990 EDITION - Ultrasonic Examination of Turbine-Generator Steel Retaining - Dec. 28, 1990
1974 R84(E2) EDITION - EDITORIALLY CORRECTED - Aug. 1, 1986
1974 EDITION - Ultrasonic Examination of Turbine-Generator Steel Retaining - Jan. 1, 1974
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