Results 21 to 30 of about 279 (157)

The Design of Reactor Internals Hold-Down Spring

open access: yesMATEC Web of Conferences, 2016
Hold down spring(HDS), clamped between the upper support plate flange and the core barrel flange inside a pressurized reactor vessel, is used to provide a downward force to keep the core barrel stable and from being lifted off from the vessel ledge ...
Guohong Xue   +3 more
doaj   +1 more source

How Reactive Hazard Assessment and new reactor internals improve safety at the Shell Rhineland Refinery

open access: yesChemical Engineering Transactions, 2019
Shell operates at its refinery in Cologne three reactors for the selective hydrogenation and desulfurization of a Pyrolysis gasoline stream (Pygas/C5 to C11), using a Ni-based catalyst. The hydrogenation reaction to saturate di-olefins and olefins taking
Pubudini Wagner-Gillen
doaj   +1 more source

Feasibility of Safe Operation of WWER-440-Type Nuclear Power Plants for Up to 60–70 Years

open access: yesEnergies, 2023
Most WWER-440 reactors are operated over the planned operational lifetime of 30 years. Now, the owners/operators are preparing for the second phase of extending the operation.
Tamás János Katona   +2 more
doaj   +1 more source

Thermal hydraulic analysis of the regimes with unmanageable control rods movement and ejection for the reactor strength estimation

open access: yesTrudy Odesskogo Politehničeskogo Universiteta, 2017
The article presents results of research (thermal-hydraulic analysis) of initiating events (regulatory regimes), associated with the uncontrolled movement and ejection of control rods that had previously not been considered quantitatively in the ...
О. С. Мазурок
doaj   +7 more sources

Development of neutron and photoatomic data libraries for the MCPV and MCSS codes [PDF]

open access: yesЯдерна фізика та енергетика
he paper presents experience gained in the development and verification of neutron and photoatomic libraries for the specialized computational codes MCPV and MCSS, which are used for the analysis of radiation exposure of VVER reactor pressure vessels ...
V. V. Ilkovych
doaj   +1 more source

International Thermonuclear Experimental Reactor [PDF]

open access: yes, 1993
This is a general overview pamphlet on the ITER tokamak.
openaire   +2 more sources

Hydrodynamics of a self-agitated draft tube airlift reactor [PDF]

open access: yesChemical Industry and Chemical Engineering Quarterly, 2014
The main hydrodynamic characteristics of a novel-constructed, self-agitated draft tube airlift reactor (DT-ALR) were investigated. Ten impellers, driven only by the means of gas throughput and induced liquid circulation, were inserted in the ...
Tekić Miodrag N.   +6 more
doaj   +1 more source

Development of shroud remotely operated vehicle for ultrasonic testing (Formulation of design requirements and development of a vehicle for internal surface operations of shrouds)

open access: yesNihon Kikai Gakkai ronbunshu
This paper presents the development and application of phased array ultrasonic testing (PAUT) and a remotely operated vehicle (ROV) for the in-vessel inspection of boiling water reactor (BWR) internals.
Yasuhiro YUGUCHI   +4 more
doaj   +1 more source

Moisture Transfer Model and Simulation for Dehumidification of HTGR Core

open access: yesScience and Technology of Nuclear Installations, 2018
A large number of carbon materials are adopted in high-temperature gas-cooled reactor (HTGR). These carbon materials mainly include graphite IG-110 and boron-containing carbon material (BC), both of which are typical porous materials and normally absorb ...
Jun Li   +7 more
doaj   +1 more source

Dynamic characteristics assessment of reactor vessel internals with fluid-structure interaction

open access: yesNuclear Engineering and Technology, 2017
Improvement of numerical analysis methods has been required to solve complicated phenomena that occur in nuclear facilities. Particularly, fluid-structure interaction (FSI) behavior should be resolved for accurate design and evaluation of complex reactor
Sang Yun Je   +2 more
doaj   +1 more source

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