Results 11 to 20 of about 51 (41)

Decay Heat Removal in GEN IV Gas‐Cooled Fast Reactors

open access: yesScience and Technology of Nuclear Installations, Volume 2009, Issue 1, 2009., 2009
The safety goal of the current designs of advanced high‐temperature thermal gas‐cooled reactors (HTRs) is that no core meltdown would occur in a depressurization event with a combination of concurrent safety system failures. This study focused on the analysis of passive decay heat removal (DHR) in a GEN IV direct‐cycle gas‐cooled fast reactor (GFR ...
Lap-Yan Cheng   +2 more
wiley   +1 more source

Gas‐Cooled Fast Reactor: A Historical Overview and Future Outlook

open access: yesScience and Technology of Nuclear Installations, Volume 2009, Issue 1, 2009., 2009
A review is given of developments in the area of Gas‐Cooled Fast Reactors (GCFR) in the period from roughly 1960 until 1980. During that period, the GCFR concept was expected to increase the breeding gain, the thermal efficiency of a nuclear power plant, and alleviate some of the problems associated with liquid metal coolants.
W. F. G. van Rooijen, Guglielmo Lomonaco
wiley   +1 more source

Long-term thermal stability of biphasic Li4SiO4-Li2TiO3 EU reference tritium breeder ceramics enriched in Li-6

open access: yesNuclear Materials and Energy
The long-term thermal stability of Advanced Ceramic Breeder (ACB) pebbles was investigated in an annealing experiment at 700 and 900 °C in He + 0.1 vol% H2 gas atmosphere for up to 60 days. Four batches of biphasic ACB pebbles, consisting of Li4SiO4 with
Julia Leys   +3 more
doaj   +1 more source

Thermal cycling experiment of biphasic Li4SiO4-Li2TiO3 EU reference tritium breeder ceramics

open access: yesNuclear Materials and Energy
The thermal cycling behaviour of Advanced Ceramic Breeder (ACB) pebbles was investigated in a temperature range from 300 to 800 °C in a He + 0.1 vol% H2 gas atmosphere for up to 30 cycles.
Julia Leys, Oliver Leys, Regina Knitter
doaj   +1 more source

Reaction kinetics of Li4SiO4 and Li4Ti5O12 in biphasic breeder ceramics after lithium burn-up

open access: yesNuclear Materials and Energy
Advanced ceramic breeder (ACB) pebbles consisting of the two phases Li4SiO4 and Li2TiO3 serve as the EU reference tritium breeding material. In the present study, the phase stability with regard to a lithium-burn-up is investigated.
Julia Leys   +2 more
doaj   +1 more source

A high-speed camera-based measurement system for monitoring and controlling the induced jet break-up fabrication of advanced ceramic breeder pebbles

open access: yesThe International Journal of Advanced Manufacturing Technology
AbstractThe production of lithium-rich ceramic pebbles is crucial for future fusion reactors, as they are one of the most important components of the tritium-breeding blankets. In order to produce high-quality pebbles, a melt-based fabrication process KALOS (KArlsruhe Lithium OrthoSilicate) has been developed at the Karlsruhe Institute of Technology ...
Miao Zhang   +4 more
openaire   +3 more sources

Strength of advanced ceramic breeder pebbles: influence of fabrication methods, composition and annealing

open access: yes, 2019
The strength of advanced ceramic breeder pebbles, consisting of Li4SiO4 and Li2TiO3 as well as lithium excessive Li2TiO3 was investigated with the focus on the influence of different relevant fabrication methods, compositions and after thermal annealing.
openaire   +3 more sources

Formation, accumulation and annihilation of radiation-induced defects and radiolysis products in advanced two-phase ceramic tritium breeder pebbles

open access: yes, 2018
Advanced lithium orthosilicate (Li4SiO4) pebbles with additions of lithium metatitanate (Li2TiO3) as a secondary phase are suggested as an alternative candidate for the tritium breeding in future nuclear fusion reactors. In this doctoral thesis, for the first time the formation, accumulation and annihilation of radiation-induced defects (RD) and ...
openaire   +1 more source

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