Results 161 to 170 of about 2,420,955 (221)

Stability of Reactor Control Systems in Coupled Core Reactors

IEEE Transactions on Nuclear Science, 1971
For combating not only general deviations in total power, but localized flux (power) perturbations as well, separate control systems are designed for separate cores of the coupled-core reactor. In this paper conditions are obtained for global asymptotic stability of a coupled core reactor including its control system.
G. V. S. Raju, R. Josselson
openaire   +1 more source

Reactor Core Methods

2009
This chapter addresses the simulation flow chart that is currently used for reactor-physics simulations. The methodologies presented are more appropriate to the context of power reactors, and the chapter focuses particularly on the three-dimensional (3D) aspect of core calculations.
openaire   +2 more sources

The reprocessing of reactor core materials

Nuclear Engineering and Design, 2014
Abstract Generation IV high temperature gas-cooled reactors (HTGR) are preferentially fueled by spherical fuel elements, which are composed of a fuel zone of triso-coated uranium oxide (UO 2 ) particles and a matrix graphite layer. Unqualified coated particles and spherical fuel elements unavoidablely occur during the processing of coating UO 2 ...
Jing Wang, Bing Liu, Youlin Shao, Zhenming Lu, Malin Liu   +4 more
openaire   +1 more source

Heat release in the reactor core

2009
Chapter 1 contains introductory information about the heat release in the reactor core, the thermal power and thermal power density in the fuel, structures and moderator, the influence of the thermal power density on the coolant temperature, and the spatial distribution of the thermal power density.
openaire   +1 more source

Workshop “Modelling of Small Reactor Cores”

1985
There was general agreement that the modelling was satisfactory in the core away from large disturbances such as control absorbers, or experimental assemblies. However close to such assemblies, or in the reflector the situation was far from satisfactory.
S. Anderson, S. B. Wright
openaire   +1 more source

The application of the saturated-core reactor and regulator

Journal of the A.I.E.E., 1924
The purpose of this paper is to state briefly the use of voltage regulators and reactors in transmission and distribution systems and to mention operating requirements which might be best met by the use of saturated-core type regulators or reactors. The saturated-core type regulator and reactor consists of an iron core with two sets of coils.
openaire   +1 more source

In-core temperature control of nrx reactors

Propulsion Joint Specialist Conference, 1965
T obtain a maximum specific impulse from the nuclear rocket engine, the reactor is run at as high a temperature as possible within the thermal limits of the core and its structural components. Thermocouples located within selected unfueled elements in the core of the reactor provide the sensing for a reactor temperature control loop that acts as a trim
openaire   +1 more source

Materials of the Reactor Core

2012
By the beginning of work in the 1960s, information on the properties and manufacturing technology of materials for the NRE core (based on zirconium, niobium, uranium carbides, and zirconium hydride) was absent or inconsistent. It was known that unlike mono compound of uranium with a low melting point (2,500 K), a fuel based on solid solutions of UC–ZrC
openaire   +1 more source

The Detection of Reactor Antineutrinos for Reactor Core Monitoring: an Overview

Nuclear Data Sheets, 2014
Abstract There have been new developments in the field of applied neutrino physics during the last decade. The International Atomic Energy Agency (IAEA) has expressed interest in the potentialities of antineutrino detection as a new tool for reactor monitoring and has created an ad hoc Working Group in late 2010 to follow the associated research and ...
openaire   +2 more sources

Ultrasonic NDE in a reactor core

2011 IEEE International Ultrasonics Symposium, 2011
We have irradiated bulk single crystal piezoelectric AlN operating as an ultrasonic transducer up to a fast and thermal neutron fluence of 1.85X1018 n/cm2 and 5.8X1018 n/cm2 respectively along with a gamma dose of 26.8 MGy. Our primary interest was in the radiation effects on the piezoelectric performance of the AlN crystal. Ideally standard procedures
David A. Parks, Bernhard R. Tittmann
openaire   +1 more source