Showing papers in "Nuclear Engineering and Design in 2002"

TL;DR: The 10 MW High Temperature Gas-cooled Test Reactor (HTR-10) is a modular pebble bed type reactor as mentioned in this paper, and the design features of the core, the pressure boundary of the primary circuit, the decay heat removal system and the two independent reactor shutdown systems and the barrier of confinement are described in this paper.

TL;DR: In this article, the steady state flow in uniform or non-uniform diameter single-phase natural circulation loops (NCLs) can be expressed as Ress = C[Grm/NG]r where the constants C and r depend on the nature of the flow (i.e. laminar or turbulent).

TL;DR: In this article, a wide range of widely used void fraction correlations based on the Findlay-Zuber drift-flux model is evaluated and compared with experimental transient void fraction data.

TL;DR: A series of single-phase natural circulation tests in a model reactor with rolling motion was performed in order to investigate effects of the rolling motion on its thermal-hydraulic behavior.

TL;DR: The first fuel for the Chinese 10 MW high temperature gas-cooled reactor (HTR-10) attained its first criticality on December 21, 2000 as discussed by the authors, and a total of 11,721 spherical fuel elements were successfully produced.

TL;DR: In this article, the effects of cyclic strain amplitude, mean strain, temperature and their histories on the cyclic deformation behavior of the material were investigated under the uniaxial strain-controlled cyclic loading.

TL;DR: In this paper, the development of spherical fuel elements for HTR-designs in Germany is discussed, and special attention is given to the development, production and characterization (incl. kernel and coatings) as well as to the irradiation and post-irradiation examination of the different coated particle systems.

TL;DR: In this paper, the compressive strength and chemical composition of concrete used in the Yonggwang NPP units 3 and 4 were analyzed and the thermal properties of the concrete, such as density, conductivity, diffusivity, and specific heat were also measured with a wide temperature range of 20-1100°C.

TL;DR: In this paper, the effect of ship inclination and heaving on the thermal hydraulic behavior of a nuclear power-natural circulation flow coupling under the condition of external forces was analyzed by retran-02/grav.

TL;DR: In this paper, the historical development of the high temperature gas cooled reactor (HTGR) in China is discussed, and the development strategy of the HTGR is explained in detail, including the aim, design, construction and commissioning of the 10 MW HTGR test module (HTR-10).

TL;DR: In this article, a parametric study was carried out to study the effects of important system parameters on the effectiveness of seismic isolation for liquid storage tanks, such as the period of isolation, damping of isolation bearings and yield strength level of the bearings.

TL;DR: In this article, the historical development of the high temperature gas cooled reactor (HTGR) in China is discussed, and the development strategy of the HTGR is explained in detail, including the aim, design, construction and commissioning of the 10 MW HTGR test module (HTR-10).

TL;DR: In this article, the authors investigate the resistance to chloride penetration of different types of concrete and to develop high-performance concrete that has very high resistance to the chloride penetration, and thus, can guarantee high durability.

TL;DR: A phased array ultrasonic inspection (PAULI) system was developed to obtain electronically scanned ultrasonic images of the inside of nuclear power plant components for nondestructive evaluation.

TL;DR: In this article, a theoretical and experimental study of density wave oscillation (DWO) in natural circulation is presented, which is a function of non-dimensional parameters, such as phase change number Npch, subcooling number Nsub, Froude number, Fr, geometry number Nl and friction number τ.

TL;DR: In this article, the power distribution, the temperature distribution and the flow distribution of a 10 MW high temperature gas-cooled test module (HTR-10) are calculated for initial and equilibrium core.

TL;DR: Wang et al. as discussed by the authors proposed a commercial prototype HTR-PM, which is under study and conceptual design has started, which will result in safe and economic development of HTGR technologies in China.

TL;DR: In this article, the fracture behavior of straight pipe and elbow with local wall thinning was studied, and failure modes were divided into four types; cracking, local buckling, ovalization and plastic collapse.

TL;DR: AECL is studying advanced reactor designs where natural convection is an important design feature in heat removal processes as discussed by the authors, and the use of a flashing-driven, natural-circulation system to remove moderator heat is being considered.

TL;DR: In this article, a fast Fourier transform based method (FFTBM) was proposed to evaluate the uncertainty of BE code predictions in thermal-hydraulic computer codes for simulation and the acceptability factor for code calculation was determined based on several hundreds of code calculations.

TL;DR: In this article, a rational analysis method for thermal stress induced by fluid temperature fluctuation is developed, by utilizing frequency response characteristics of structures, which can predict stress amplitudes on structural surfaces from fluid temperature amplitudes and frequencies.

TL;DR: In this paper, the authors evaluated the stress intensity factors of an elliptical crack front embedded with a round bar by collapsed singular element with detailed mesh on crack front and appropriating adjacent area.

TL;DR: In this article, the functioning of the subcooled boiling model adopted in a thermal-hydraulic computer program has been investigated in detail, for low-pressure conditions, and necessary refinements have been incorporated into the code.

TL;DR: In this article, it is shown that some of the most important physical properties of their constituents, which determine this good performance, are only poorly known, and this ignorance is likely to become more serious when particles are required to attain higher burn-up values.

TL;DR: In this article, a thermistor probe method was used to measure the thermal conductivity of buffer materials and the evaluation of existing correlations predicting their thermal conductivities was carried out, and it was found that the correlation proposed by Sakashita and Kumada provides the most accurate predictions for the thermalconductivity of bentonite.

TL;DR: In this article, a permanently reprocessed, highly thermalised spectrum molten salt reactor is proposed for in-core incineration of waste, which produces very little long-lived waste using a uranium or thorium support.

TL;DR: Fretting tests of Zircaloy fuel sheath bearing pads in contact with zirconium alloy (Zr 2.5Nb) pressure tube specimens were conducted at temperatures varying from 25 to 315 °C as mentioned in this paper.

TL;DR: In this article, the authors make a deep study of the role and prospect of nuclear power as an essential component of China's future energy mix, so as to develop a sound and sustainable energy security strategy.

TL;DR: In this article, the effect of alloying elements on the corrosion resistance of various types of steel in lead (Pb), bismuth (Bi), and lead-bismuth(Pb-Bi) was examined.

TL;DR: In this paper, a modified Beremin model is proposed to fit correctly the brittle to ductile transition and the classical Beremin-Weibull fracture probability expression is extended to take account of non-monotonic thermomechanical loadings.