Relative to coal fired and natural gas fired power plants, nuclear power plants are more expensive to build but less expensive to run. This annex describes advanced construction methods to reduce nuclear power's construction costs, mainly by shortening the time needed to build a plant. Each of the methods described below has been used in one or more of the projects listed in Table IV-1. None is...

The detection of flaws in steam generator tubing is often made difficult by environmental considerations. The small diameter, 7/8 inch (2.2 cm), long, 70 feet (21.3m), tubes occur in large bundles with access only being possible from the inside of the end of each tube. Furthermore, inspection must be fully automatic when the steam generator is part of a nuclear power plant because of radiation ...

in this paper, first a sensitivity analysis of parameters affecting the performance of the steam generator is performed. this process includes the pinch temperature difference and the gas velocity (width of the hrsg) as the operating parameter and geometrical parameters (fin’s thickness, fin’s height, number of fins in each inch, tube transverse pitch) for each pressure parts is carried out, an...

Abstract After decades of operation in nuclear power plants, Once-Through Steam Generators (OTSGs) were recently proposed for fusion applications. In particular, they are supposed to be installed the primary cooling systems European Union Demonstration plant (EU-DEMO). One key reactor components is Breeding blanket (BB). Among BB concepts that currently under study, Water-Cooled Lithium-Lead (W...

The design of the dissimilar metal weld investigated here is aimed at applications in steam generator a sodium-cooled nuclear reactor, with multi-decade lifespan demanding operational conditions. It consists narrow-gap joint between 2.25Cr-1Mo low-alloy steel and an austenitic alloy using nickel-based 82 as filler material. This study focuses on understanding microstructural micromechanical evo...

Nuclear steam generators are subject to clogging of their internal parts which causes safety issues. Diagnosis methodologies are needed to optimize maintenance operations. Clogging alters the dynamic behaviour of steam generators and particularly the response of the wide range level (WRL – a pressure measurement) to power transients. A numerical model of this phenomenon has previously been deve...

The lead cooled reactor BREST-OD-300 is developing as a part of Russian federal project “PRORYV”. Two- circuit scheme used in the for heat removal. An inherent risk two- potential danger water steam ingression core case large leakage generator initiated, example, Steam Generator Tube Rupture (SGTR). Reactor power and temperature response on vapor penetration to studied, but pressurization effec...

In dynamic environments, data characteristics may drift over time. This leads to deteriorate dramatically the performance of incremental learning algorithms over time. This is because of the use of data which is no more consistent with the characteristics of new incoming one. In this paper, an approach for learning in dynamic environments is proposed. This approach integrates a mechanism to use...