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A deep burn fuel management strategy for the incineration of military plutonium in the gas turbine-modular helium reactor modeled in a detailed three-dimensional geometry by the Monte Carlo continuous energy burnup code
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.
KTH, School of Engineering Sciences (SCI), Physics, Reactor Physics.
2006 (English)In: Nuclear science and engineering, ISSN 0029-5639, E-ISSN 1943-748X, Vol. 153, no 2, 172-183 p.Article in journal (Refereed) Published
Abstract [en]

In the future development of nuclear energy, the graphite-moderated helium-cooled reactors may play an important role because of their valuable technical advantages: passive safety, low cost, flexibility in the choice of fuel, high conversion energy efficiency, high burnup, more resistant fuel cladding, and low power density. General Atomics possesses a long experience with this type of reactor, and it has recently developed the gas turbine-modular helium reactor (GT-MHR), a design where the nuclear power plant is structured into four reactor modules of 600 MW(thermal). Amid its benefits, the GT-MHR offers a rather large flexibility in the choice of fuel type; Th, U, and Pu may be used in the manufacture of fuel with some degrees of freedom. As a consequence, the fuel management may be designed for different objectives aside from energy production, e.g., the reduction of actinide waste production through a fuel based on thorium. In our previous studies we analyzed the behavior of the GT-MHR with a plutonium fuel based on light water reactor (LWR) waste; in the present study we focused on the incineration of military Pu. This choice of fuel requires a detailed numerical modeling of the reactor since a high value of keff at the beginning of the reactor operation requires the modeling both of control rods and of burnable poison; by contrast, when the GT-MHR is fueled with LWR waste, at the equilibrium of the fuel composition, the reactivity swing is small.

Place, publisher, year, edition, pages
2006. Vol. 153, no 2, 172-183 p.
Keyword [en]
Cladding (coating), Codes (standards), Cost effectiveness, Gas turbines, Helium, Monte Carlo methods, Nuclear energy, Nuclear reactors, Plutonium, Three dimensional, Deep burn fuel management, Energy burnup codes, Fuel cladding, Military plutonium, Fuel consumption
National Category
Energy Engineering
Identifiers
URN: urn:nbn:se:kth:diva-156336ISI: 000238275300005Scopus ID: 2-s2.0-33745530266OAI: oai:DiVA.org:kth-156336DiVA: diva2:766695
Note

QC 20141128

Available from: 2014-11-28 Created: 2014-11-26 Last updated: 2017-12-05Bibliographically approved

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