Special qualities and availability of parts

Service work performed in nuclear facilities must meet quality requirements geared to the specific uses of the nuclear components concerned. The example of pipes designed for use in nuclear power plants shows that the stringent criteria can be met only by the optimum utilization of the fabrication facilities and by additional fabrication steps and further refinements. A factor of special importance as far as quality assurance is concerned are the materials properties, which can be maintained only on the basis of experience and through the exercising of special care, from the melt to the finished component. (20 MnMoNi 55, 1.4550, X 20 CrMoV 12 1). (orig./HP)