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      Technological status of reactor coolant pumps in generation III+ pressurized nuclear reactors Translated title: Stand der Technik bei Hauptkühlmittelpumpen für Druckwasserreaktoren der Generation III+

      1 , * , , 2
      Carl Hanser Verlag

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          KSB has been developing and producing pumps for thermal power plants for nearly 90 years. Consequently, KSB also started to develop and manufacture pumps for all kinds of nuclear power plants from the very beginning of the civil use of nuclear energy. This is especially true for reactor coolant pumps for pressurized water reactors. For the generation of advanced evolutionary reactors (Generation III+ reactors), KSB developed an advanced shaft seal system which is also able to fulfill the requirements of station blackout conditions. The tests in the KSB test rigs, which were successfully completed in December 2015, proved the full functionality of the new design. For generation III+ passive plant reactors KSB developed a new reactor coolant pump type called RUV, which is based on the experience of classic reactor coolant pumps and reactor internal pumps. It is a very compact, hermetically sealed vertical pump-motor unit with a wet winding motor. A full scale prototype successfully passed the 1st stage qualification test program in October 2015.


          KSB entwickelt und produziert seit fast 90 Jahren Pumpen für thermische Kraftwerke. Auf dieser Basis hat KSB vom Beginn der friedlichen Nutzung der Kernenergie Pumpen für alle Bauarten von Kernkraftwerken entwickelt und gefertigt, ganz speziell auch Hauptkühlmittelpumpen für Druckwasserreaktoren. Für die Generation der fortschrittlichen, evolutionären Reaktoren der Generation III+ hat KSB das Wellendichtungssystem weiterentwickelt um auch den Anforderungen des Station Black Out zu genügen. Dieses Dichtungssystem wurde in KSB Prüfständen unter Originalbedingungen bis Dezember 2015 erfolgreich getestet. Für die Reaktoren der Generation III+ in Passivbauweise hat KSB auf Basis der Erfahrungen der klassischen Hauptkühlmittelpumpen für Druckwasserreaktoren sowie der Reaktoreinsteckpumpen für Siedewasserreaktoren eine neue Pumpenbaureihe, die RUV entwickelt. Dabei handelt es sich um ein sehr kompaktes, hermetisch dichtes, vertikales Pumpen-Motor Aggregat mit Nassläufermotor. Ein Prototyp in Originalgröße wurde im Oktober 2015 in einem ersten Testabschnitt erfolgreich getestet.

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          Analytical solution for two-group diffusion equations in a multilayered slab using Laplace Transform Technique

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            A boundary element-response matrix method for the multigroup neutron diffusion equations

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              On an analytical evaluation of the flux and dominant eigenvalue problem for the steady state multi-group multi-layer neutron diffusion equation

              In this work the authors solved the steady state neutron diffusion equation for a multi-layer slab assuming the multi-group energy model. The method to solve the equation system is based on an expansion in Taylor Series resulting in an analytical expression. The results obtained can be used as initial condition for neutron space kinetics problems. The neutron scalar flux was expanded in a power series, and the coefficients were found by using the ordinary differential equation and the boundary and interface conditions. The effective multiplication factor k was evaluated using the power method. We divided the domain into several slabs to guarantee the convergence with a low truncation order. We present the formalism together with some numerical simulations.

                Author and article information

                Carl Hanser Verlag
                27 April 2016
                : 81
                : 2
                : 177-184
                1 Senior Director Product Development Pumps, KSB Aktiengesellschaft
                2 Global Executive Officer Pumps, KSB Aktiengesellschaft, Email: Stephan.bross@ 123456ksb.com
                Author notes
                © 2016, Carl Hanser Verlag, München
                : 14 December 2015
                Page count
                References: 2, Pages: 8
                Self URI (journal page): https://www.hanser-elibrary.com/loi/kt
                Technical Contributions/Fachbeiträge

                Materials technology,Materials for energy,Nuclear physics
                Materials technology, Materials for energy, Nuclear physics


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