Epson USN 52R, USN 52L manual Operator training, Technical test requirements

Introduction Important notes

Operator training

The operator of an ultrasonic flaw detector must be adequately trained in the field of ultrasonic test meth- ods. This includes, among other things, sufficient knowledge of:

–sound propagation theory,

–the effects of the velocity of sound in the material,

–what happens to the sound wave at the interface between two different materials under test,

–the propagation of the sound beam,

–the effect of the sound attenuation in the object under test,

–the effect of the surface condition of the object under test.

Lack of knowledge here can lead to false test results with unforeseeable consequences.

Information concerning existing possibilities for the qualification of ultrasonic operators as well as the ques- tion of achieving these qualifications can be obtained from the corresponding NDT societies in your country (DGZfP in Germany, ASNT in the USA etc.), or also from Krautkramer-Branson.

Technical test requirements

Every ultrasonic test is subject to specific technical test requirements. The most important of these are:

•definition of the scope of the test;

•selection of the appropriate technical test method;

•taking into account the properties of the material;

•laying down the test limits for “recording and evalua- tion purposes“.

It is the task of those with overall responsibility for test- ing to ensure that the test operator is fully informed about these requirements. The best basis for such infor- mation is experience with identical test objects. It is also essential that the relevant test specifications be clearly and completely understood by the test operator.

Krautkrämer GmbH & Co regularly hold specialized training courses for qualified persons in the field of ul- trasonic testing.

Scheduled dates of such courses will be given on re- quest.

1-4 Issue 05, 02/00 Krautkramer USN 52R/USN 52L