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ASTM A531/A531M-91(2001)

Historical Reaffirmation

Standard Practice for Ultrasonic Examination of Turbine-Generator Steel Retaining Rings

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1.1 This practice covers the procedures to be followed when performing ultrasonic shear and longitudinal wave tests on turbine-generator retaining rings with an inside diameter to wall thickness ratio equal to or greater than 5:1 and with wall thicknesses from 1 to 4 in. (25 to 102 mm).

1.2 Although this practice describes methods of ultrasonically testing retaining rings by either the contact or immersion method, it shall not restrict the use of improved inspection methods as they are developed. It is recognized that techniques for examination and evaluation may be chosen in order to enhance or improve the results or to accommodate variations in procedures, equipment, or capabilities. Considering these characteristics, forgings may be inspected by a combination of both the contact and the immersion methods, as mutually agreed upon between the manufacturer and the purchaser.

1.3 This practice and the applicable material specifications are expressed in both inch-pound units and SI units. However, unless the order specifies the applicable "M" specification designation SI units, the material shall be furnished to inch-pound units.

1.4 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.


SDO ASTM: ASTM International
Document Number A531
Publication Date Dec. 15, 1991
Language en - English
Page Count 5
Revision Level 91(2001)
Supercedes
Committee A01.06
Publish Date Document Id Type View
May 1, 2024 A0531_A0531M-24 Revision
May 1, 2018 A0531_A0531M-18 Revision
May 1, 2013 A0531_A0531M-13 Revision
March 1, 2012 A0531_A0531M-12 Revision
March 15, 2023 A0531_A0531M-18R23 Reaffirmation
March 1, 2006 A0531_A0531M-91R06 Reaffirmation
Dec. 15, 1991 A0531_A0531M-91R01 Reaffirmation
Dec. 15, 1991 A0531_A0531M-91R96 Reaffirmation