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Showing 1 to 16 of 16 for “"Boiling Water Reactor (BWR)"”.
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Optimization algorithms in boiling water reactor lattice design
Given the highly complex nature of neutronics and reactor physics, efficient methods of optimizing are necessary to effectively design the core reloading pattern and operate a nuclear reactor. The current popular methods for optimization are Simulated Annealing and the Genetic Algorithm; this paper …
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Material Corrosion by Nuclear Reactor Coolants
… work investigated material corrosion by nuclear reactor coolants, including pressurized water reactor (PWR) coolant, boiling water reactor (BWR) coolant, high-temperature steam, lead-bismuth eutectic (LBE), and molten salt. Novel cladding materials for accident tolerant fuel (ATF) and additive …
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Integrated environmental degradation model for Fe-Ni-Cr alloys in irradiated aqueous solutions
… has been developed to evaluate the effect of reactor flux, fluence, and other operating conditions on crack growth rates in austenitic stainless steels in boiling water reactor (BWR) environments. The model evaluates the following in order to account for all factors affecting irradiation …
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Effects of thermal stresses on Pressurised Water Reactor nuclear containment vessels following a Loss of Coolant Accident with assimilated containment filtered venting system
… systems. CFVS have historically been included in boiling water reactor (BWR) designs, but following the Fukushima Daiichi nuclear accident, they are being introduced as severe accident management systems to manage the threat of containment over-pressurisation in pressurised water reactors (PWR). …
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TRACE code validation of boiling water reactor spray cooling injection into a SVEA fuel assembly
… is a safety feature implemented in many Boiling Water Reactor (BWR) designs to re-flood a reactor during an accident. Significant experimental work has qualified the efficacy of spray cooling, and ongoing computational modeling efforts strive to more accurately portray the phenomena …
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The effect of thermal aging and boiling water reactor environment on Type 316L stainless steel welds
… at the 288°C operating temperature of a boiling water reactor (BWR) for example, where ductility reductions have been observed after several tens of thousands of hours. An experimental study has been completed in order to understand how the spinodal decomposition may affect material …
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Flux-Independent Uncertainty Propagation of Nuclear Cross Section Data Using the Windowed Multipole Formalism
… propagation method are applied to a partial boiling water reactor (BWR) assembly calculation. The second portion involves the determination of Windowed Multipole (WMP) parameter uncertainty from continuous energy cross section uncertainty data. WMP parameters present a path forward for …
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Assessment of Dancoff adjusted Wigner-Seitz cells for self-shielding LWR lattices
… resonance self-shielded cross sections for light water reactor (LWR) lattices. The WS approximation has been commonly used in lattice physics calculations for many decades regardless that it has been shown to underestimate k-eff for an infinite LWR lattice by several hundred pcm. The WS cell …
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Thermohydraulics and suppression of nucleate boiling in upward two-phase annular flow : probing multiscale physics by innovative diagnostics
In the fuel assemblies of a boiling water reactor (BWR) the steam quality increases along the assembly's length as heat is transferred from the fuel rods to the water coolant. Nucleate boiling is the dominant heat transfer mechanism at low and intermediate steam qualities (typical of the bubbly and …
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LEU+ Fuel Cycle Investigation of the BWRX-300 Design Using Neutronic and Two-Phase Thermal Hydraulic Analyses
Of the many advanced reactor concepts proposed, small modular reactors (SMRs) are of particular interest due to their relatively low upfront capital cost, scalability, and enhanced safety features. Of SMR concepts, General Electric Hitachi Nuclear Energy’s (GEH) BWRX-300 design is one of the most …
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3D Reactor Physics Modelling Of Reduced-Moderation Water Reactor (RMWR) Fuel
The Reduced-Moderation Water Reactor (RMWR) is an innovative water-cooled reactor with some of the characteristics of a fast neutron reactor, which can achieve a high conversion ratio of more than 1.0 and a negative void reactivity coefficient. The conception of RMWR is built on established Boiling …
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Understanding the Impact of Nuclear Environment on the Hydrothermal Corrosion in SIC
… the accident tolerance of commercial light-water nuclear reactor fuel. To evaluate the fiber composites’ viability, understanding the kinetics of their corrosion in Light Water Reactor (LWR) conditions is critical. SiC corrosion results in the formation of silica, which can then be rapidly …
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Analysis of reverse flow restriction device to prevent fuel dryout during loss of coolant and instability accidents of boiling water reactors
… a new method to increase the safety of Boiling Water Reactors (BWRs) during the BWR instability and Loss of Coolant Accidents (LOCA). The method is based on a device called Reverse Flow Restriction Device (RFRD) and its purpose is to allow the flow in the forward direction, but prevent …
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Xenon Induced Power Distribution Transients in Boiling Water Reactors
Made available in DSpace on 2017-07-06T18:56:12Z (GMT). No. of bitstreams: 3 Schaller_Richard_F_MS.pdf: 99742173 bytes, checksum: 19d4d4ce88882143374a75b752d877f8 (MD5) Schaller_Richard_F_MS_ABS.pdf: 501631 bytes, checksum: abe09d463813541209f599b143563bf9 (MD5) license.txt: 4813 bytes, checksum: …
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Analysis of Reverse Flow Restriction Device to Prevent Fuel Dryout During Loss of Coolant and Instability Accidents of Boiling Water Reactors
Made available in DSpace on 2017-07-06T18:55:56Z (GMT). No. of bitstreams: 3 Radaideh_Majdi_I_MS.pdf: 3702916 bytes, checksum: d9ab8cfcddc4314d381232b2ad3af591 (MD5) Radaideh_Majdi_I_MS_ABS.pdf: 113055 bytes, checksum: 6dd5088a2264a7ad7262bf468569a820 (MD5) license.txt: 4813 bytes, checksum: …
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Development of an Integrated Top Spray and Bottom Reflooding Computer Model for Light Water Reactor Safety Analysis
Made available in DSpace on 2017-07-06T18:59:12Z (GMT). No. of bitstreams: 3 Trease_Harold_E_MS.pdf: 64224253 bytes, checksum: 7978bca455eede4ee38d02fee0a92347 (MD5) Trease_Harold_E_MS_ABS.pdf: 514001 bytes, checksum: 268415b98e2089872606f7e860100997 (MD5) license.txt: 4813 bytes, checksum: …