PREN 12680-1 : DRAFT 2000

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Requirements
   4.1 Order information
   4.2 Extent of testing
   4.3 Maximum permissible size of discontinuities
   4.4 Testing personnel
   4.5 Wall section zones
   4.6 Severity levels
5 Test method
   5.1 Principles
   5.2 Material
   5.3 Equipment, coupling medium and time-base calibration
   5.4 Preparation of casting surfaces for testing
   5.5 Test procedure
   5.6 Test report
Table 1 - Acceptance limits for non-planar discontinuities
Table 2 - Ultrasonic testability requirements
Table 3 - Recording levels
Figure 1 - Acceptance limits for individual planar indications
           mainly orientated in through-wall direction, detected
           with angle probes
Figure 2 - Division of wall section into zones
Figure 3 - Measurement of the dimension of discontinuities in
           through-wall direction
Figure 4 - Measurement of the dimensions of discontinuities in
           through-wall direction with normal probes
Annex A (informative) Sound-beam diameters
Annex B (informative) Types of indications

Specifies the requirements for the ultrasonic inspection of steel castings for general purposes (with limited content of austenite) and the methods for determining internal discontinuities by the pulse-echo technique.