This practice shall be used when ultrasonic inspection is required by the order or specification for inspection purposes where the acceptance of the forging is based on limitations of the number, amplitude, or location of discontinuities, or a combination thereof, which give rise to ultrasonic indications.

The acceptance criteria shall be clearly stated as order requirements.

1. Scope

1.1 This practice for ultrasonic examination covers turbine and generator steel rotor forgings covered by Specifications A469/A469M, A470/A470M, A768/A768M, and A940/A940M. This standard shall be used for contact testing only.

1.2 This practice describes a basic procedure of ultrasonically inspecting turbine and generator rotor forgings. It does not restrict the use of other ultrasonic methods such as reference block calibrations when required by the applicable procurement documents nor is it intended to restrict the use of new and improved ultrasonic test equipment and methods as they are developed.

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

Other Standards

Keywords

generator material; nondestructive tests; rotors, turbine, or generator; steel forgings; steel forgingsalloy; turbine materials; ultrasonic examination; ultrasonic examination method; Amplifier calibration; Forgings (turbine rotors/disks/shafts); Generator materials--turbine rotors and shafts; Steel forgings (turbine); Ultrasonic testing--steel;

ICS Code

ICS Number Code 77.040.20 (Non-destructive testing of metals); 77.140.85 (Iron and steel forgings)

Citing ASTM Standards

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