Core burnup calculation and accidents analyses of a pressurized water reactor partially loaded with rock-like oxide fuel

Akie, Hiroshi; Sugo, Y.; Okawa, Riichiro

doi:10.1016/s0022-3115(03)00147-8

Cited by 7 publications

(9 citation statements)

References 2 publications

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“…Figure 7 shows the change where 239 Pu decreases by about 90% [3]. The NMB code considering burn-up dependency of cross section can reasonably reproduce a result of the SRAC code [8] with error less than 10%, as shown in Figure 8.…”

Section: Theory and Validation Of Burn-up Calculationmentioning

confidence: 70%

“…Instead of MOX fuel, rocklike oxide (ROX) fuel has been developed for the purpose of achieving better stability of SF and higher transmutation of fissionable Pu than MOX fuel [2]. ROX fuel contains mainly Pu with less amount of 238 U to reduce Pu production and to transmute about 90% of fissile Pu [3,4]. ROX SF is chemically stable so radionuclides can be confined in a repository, and it is difficult to obtain Pu by reprocessing.…”

Section: Introductionmentioning

confidence: 99%

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Utilization of rock-like oxide fuel in the phase-out scenario

Nishihara

Akie

Shirasu

et al. 2013

Journal of Nuclear Science and Technology

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Utilization of rock-like oxide (ROX) fuel in light water reactors for plutonium (Pu) burning was studied by nuclear material balance (NMB) analysis for a case of Japanese phase-out scenario under investigation after the Fukushima accident. For the analysis, the NMB code was developed with features of accurate burn-up calculation, flexible combination of reactors and fuels, and an ability to estimate waste and repository. Three scenario groups of once-through Pu burning in mixed oxide (MOX) fuel and in ROX fuel were analyzed. Using two full-MOX or full-ROX reactors the Pu amount is reduced to about one-half and the isotopic vector of Pu deteriorated for being used as a nuclear weapon, especially in terms of spontaneous fission neutron generation. Effects of ROX reactors are more significant than MOX reactors in terms of both reduction in the Pu amount and deterioration of the isotopic vector. Repository footprint and potential radiotoxicity are not reduced by the MOX and ROX reactors because the heat and toxicity of MOX and ROX spent fuels are considerably high.

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Section: Theory and Validation Of Burn-up Calculationmentioning

confidence: 70%

Section: Introductionmentioning

confidence: 99%

Utilization of rock-like oxide fuel in the phase-out scenario

Nishihara

Akie

Shirasu

et al. 2013

Journal of Nuclear Science and Technology

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“…By modifying the assembly design of ROX and addition of Er burnable poison, the total power peaking factor could be reduced to as low as 1.7 [18], that is small enough to keep the fuel temperature lower than 1700 K, when the average linear heat rate of 18 kW m À1 is assumed [18]. In that ROX-PWR core, it is possible to suppress the maximum linear heat rate to 31 kW m À1 .…”

Section: Microstructurementioning

confidence: 99%

Fuel performance evaluation of rock-like oxide fuels

Nitani

Kuramoto

Nakano

et al. 2008

Journal of Nuclear Materials

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“…Out-of pile irradiation studies designed to understand the mechanism of radiation damage have been completed [6]. Neutronic feasibility of YSZ-based IMF has been also assessed [7] complemented by core burnup calculations and accident analyses [8]. Despite its excellent radiation resistance, compatibility with reactor materials and good neutronic properties, low thermal conductivity is the main disadvantage of YSZ.…”

Section: Introductionmentioning

confidence: 99%

Fabrication and characterization of dual phase magnesia–zirconia ceramics doped with plutonia

Medvedev

Jue

Frank

et al. 2006

Journal of Nuclear Materials

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Dual phase magnesia-zirconia ceramics doped with plutonia are being studied as an inert matrix fuel (IMF) for light water reactors. The motivation of this work is to develop an IMF with a thermal conductivity superior to that of the fuels based on yttria stabilized zirconia. The concept uses the MgO phase as an efficient heat conductor to increase thermal conductivity of the composite. In this paper ceramic fabrication and characterization by scanning electron microscopy, energy and wavelength dispersive xray spectroscopy is discussed. Characterization shows that the ceramics consist of the two-phase matrix and PuO 2 -rich inclusions. The matrix is comprised of pure MgO phase and MgO-ZrO 2 -PuO 2 solid solution. The PuO 2 -rich inclusion contained dissolved MgO and ZrO 2 .

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Core burnup calculation and accidents analyses of a pressurized water reactor partially loaded with rock-like oxide fuel

Cited by 7 publications

References 2 publications

Utilization of rock-like oxide fuel in the phase-out scenario

Utilization of rock-like oxide fuel in the phase-out scenario

Fuel performance evaluation of rock-like oxide fuels

Fabrication and characterization of dual phase magnesia–zirconia ceramics doped with plutonia

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