ENV 583-6 : DRAFT 2000

Foreword
1 Scope
2 Normative references
3 Definitions and symbols
4 General
      4.1 Principle of the technique
      4.2 Requirements for surface condition and couplant
      4.3 Materials and process type
5 Qualification of personnel
6 Equipment requirements
      6.1 Ultrasonic equipment and display
      6.2 Ultrasonic mechanisms
7 Equipment set-up procedures
      7.1 General
      7.2 Probe choice and probe separation
      7.3 Time window setting
      7.4 Sensitivity setting
      7.5 Scan resolution setting
      7.6 Setting of scanning speed
      7.7 Checking system performance
8 Interpretation and analysis of data
      8.1 Basic analysis of discontinuities
      8.2 Detailed analysis of discontinuities
9 Detection and sizing in complex geometries
10 Limitations of the technique
      10.1 Precision and resolution
      10.2 Dead zones
11 TOFD examination without data recording
12 Examination procedure
13 Examination report
Annex A (normative) Reference blocks

Defines the general principles for the application of the Time-of-flight diffraction (TOFD) technique both for sizing and detection of discontinuities in low alloyed carbon steel components. Could also be used for other types of materials, providing the application of the TOFD technique is performed with necessary consideration of geometry, acoustical properties of the materials and the sensitivity of the examination.