Vol.5, No3, 2005, pp. 119-128
 UDC 620.179:621.791.05; 621.791.05:669.15; 620.179:669.15

NON-DESTRUCTIVE TESTING OF FERRITIC-AUSTENITIC WELDED JOINTS

Radomir Jovičić

Radica Prokić-Cvetković

Olivera Popović

Faculty of Mechnical Engineering, University of Belgrade

Abstract

The paper presents procedures for a complete test of the liquid CO2 storage tank and monitoring of welded joints on new connections. The storage tank is produced of high strength microalloyed steel NIOVAL 47, and connections are of high-alloyed austenitic steel. Newly introduced welded joints are tested by non-destructive methods for safety verification. Ferritic-austenitic welded joint properties impose limitations in applying these tests, so an application of additional methods is necessary (replicas, hardness test). It is shown that only in this way is it possible to obtain sufficient data for reliable assessment of joint safety.

Keywords: non-destructive testing, welded joint, crack, storage tank

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