[en] Weldings and the adjacent heat-affected zones of reactor vessels are inspected. The inspection is performed by means of search units containing three or multiple crystals in emitter-receiver technique with longitudinal or transverse waves. The three- or multi-crystal search unit may also be applied in tandem technique. Meandering sweeps with 20 mm distance of inspection may be obtained. (DG)

[en] The ultrasonic testing system serves to inspect welds and the adjoining heat-affected zones on reactor pressure vessels. The three-oscillator search unit has got either two external emitter crystal oscillators simultaneously loaded and an internal receiver crystal oscillator of equal width or vice versa. The inspection path is run through meanderingly. With the search unit there is succeeded to do the inspection by SEL technique, by SE technique with shear waves or by tandem technique. Loading of the oscillators is done with a time-multiplex method. (RW)

[en] The safety of nuclear installations requires continuous safety inspections during construction and operation. Essential parts of this safety inspection are the basis and in-line inspections. For this purpose installation systems are used which allow an optimal statement to be made regarding the conditions of tested components

No abstract available

[en] This document deals with Non-Destructive Examination (NDE) techniques used for the detection and sizing of cracks. Several techniques, such as L-SAFT, ALOK and Phased Array with UT-Tomography are discussed and compared. (TEC)

[en] The development of an ultrasonic testing method for the inspection from the outside of the areas close to the cladding of the spherical fields of holes of light water reactor pressure vessels is described

[en] The ultrasonic probe assembly is used to examine materials, e.g., the bolts of the pressure vessel of a PWR power reactor of 1,000 MWe, to detect cracks and voids. It consists of an oblong carrier tube, which can be moved by means of a manipulator, with several test heads attached to it. They are arranged at various levels above each other relative to the longitudinal axis of the carrier. Their mean beam directions may enclose an angle of 90 degrees. The individual test heads are sequentially assigned transmitter and receiver functions by an ultrasonic unit. The signals from each individual test head must be detected separately. In this way, it is possible to shorten the time required for materials examinations by using a multiplicity of test heads. (DG/RF)

[en] In this lecture the synopsis of the TACIS R.2.05 project as well as examination program and scope from RSE-M, ASME, and KTA are presented

No abstract available

No abstract available