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ASTM
A531/A531M-24 Standard Practice for Ultrasonic Examination of Turbine-Generator Steel Retaining Rings (Redline)
Edition: 2024
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Description of ASTM-A531/A531M 2024
ASTM A531/A531M-24
Redline Standard: Standard Practice for Ultrasonic Examination of Turbine-Generator Steel Retaining Rings
ASTM A531/A531M
Scope
1.1 This practice covers ultrasonic examination of turbine-generator retaining rings produced in accordance with Specifications A288 and A289/A289M with an inside diameter to wall thickness ratio equal to or greater than 5:1 and with wall thicknesses from
1 in. to 4 in. [25 mm to 102 mm].
1.2 Forgings may be inspected by either the contact or the immersion methods, or combinations thereof, as agreed upon between the manufacturer and the
purchaser.
1.3 Supplementary requirements of an optional nature are provided for use at the option of the purchaser. The supplementary requirements shall apply only
when specified individually by the purchaser in the purchase order or contract.
1.4 This practice is expressed in inch-pound and SI units; however, unless the purchase order or contract specifies the applicable “M” specification
designation (SI units), the inch-pound units shall apply. The values stated in either SI units or inch-pound units are to be regarded separately as standard. Within the practice, the SI units
are shown in brackets. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may
result in nonconformance with the standard.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on
Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
Keywords
angle beam examination; back-reflection; contact method; generator; immersion method; longitudinal wave testing; nondestructive testing; reference-block; reference-notch; retaining rings; shear
wave testing; steel forgings-alloy; turbine; ultrasonic apparatus; ultrasonic couplants; ultrasonic examination;
ICS Code
ICS Number Code 21.060.60 (Rings, bushes, sleeves, collars)
DOI: 10.1520/A0531_A0531M-24
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21.120 | Shafts and couplings
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21.120.01 | Shafts and couplings in general
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21.120.99 | Other standards related to shafts and couplings
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21.220.01 | Flexible drives and transmissions in general
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21.220.99 | Other flexible drives and transmissions
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