Operator Training; Technical Test Requirements - Epson USN 52R Operating Manual

Introduction

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.
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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.
Issue 05, 02/00
Important notes
Krautkramer USN 52R/USN 52L