scholarly journals Results of Full Scale Modeling of Electromagnetic Pulse Impact for Lightning Protection of Power Plants

2019 ◽  
Author(s):  
Vladimir Fortov ◽  
Alexei Shurupov ◽  
Valentina Zavalova ◽  
Alexander Kozlov ◽  
Mihail Shurupov ◽  
...  
Keyword(s):  
Electromagnetic Pulse ◽  
Power Plants ◽  
Full Scale ◽  
Lightning Protection ◽  
Scale Modeling

Characterization of fly ash from full-scale demonstration of sorbent injection for mercury control on coal-fired power plants

2004 ◽  
Vol 85 (6-7) ◽  
pp. 601-612 ◽  
Author(s):  
Constance Senior ◽  
C.Jean Bustard ◽  
Michael Durham ◽  
Kenneth Baldrey ◽  
David Michaud
Keyword(s):  
Fly Ash ◽  
Power Plants ◽  
Full Scale ◽  
Mercury Control ◽  
Sorbent Injection

LOCAL STUDIES OF ICE COVER EFFECTS ON DAM GATES

2021 ◽  
Vol 11 (2) ◽  
pp. 62-66
Author(s):  
Sergey V. EVDOKIMOV ◽  
Alexey A. ROMANOV ◽  
Boris G. IVANOV
Keyword(s):  
Power Plants ◽  
Practical Interest ◽  
Full Scale ◽  
Hydroelectric Power Station ◽  
Hydroelectric Power ◽  
Power Stations ◽  
Operation Rules ◽  
Static Operation ◽  
Technical Operation ◽  
Scale Data

The experience of operation of surface emergency gates in ice-breaking conditions at a number of hydroelectric power plants has shown the insuffi cient eff ectiveness of the methods used to combat freezing of structures. The rules for technical operation of spillway dam gates in winter provide for heating of structures by slots, threshold and skin in conjunction with measures to maintain mines before construction. However, measures to heat gates and build mines are not always suffi ciently justifi ed and justifi ed. In order to obtain full-scale data and scientifi c information for the development of recommendations on operating and accounting modes during design, full-scale studies of stresses and defl ections in the load-bearing elements of the watershed gate of the hydroelectric power station were carried out. This article presents the results of fi eld studies in comparison with calculated values. As a result of the studies, information on the static operation of fl at gates in winter conditions is obtained, which is of theoretical and practical interest. The materials can be used to clarify technical operation rules and to clarify regulatory documents for the design of hydromechanical equipment at hydroelectric power stations.

Microstructure Characterization of a Heterogeneous Weld for Welded Rotors

2017 ◽  
Vol 741 ◽  
pp. 128-133
Author(s):  
Vlastimil Vodárek ◽  
Anastasia Volodarskaja
Keyword(s):  
Power Plants ◽  
Stress Relief ◽  
Post Weld Heat Treatment ◽  
Microstructure Characterization ◽  
Full Scale ◽  
Internal Quality ◽  
Parent Materials ◽  
Weld Metals ◽  
Final Stress

The paper deals with microstructure characterization of a full-scale X14CrMoVNbN 10 1/ 27NiCrMoV 15-6 heterogeneous weld intended for IP/LP welded rotors. The welded rotors are being developed for modern turbines of coal fired power plants operating above 570 °C. The full–scale weld has been shown to be of good internal quality. Hardness surveys revealed the effects of post weld heat treatment parameters on weld metals and parent steels. Microstructure and precipitation of minor phases in parent materials, heat affected zones and weld metals in the state after the final stress relief annealing have been studied.

Full scale modeling of an antenna in offshore environment for electromagnetic enhanced oil recovery

2012 ◽  
Author(s):  
Muhammad Kashif ◽  
Noorhana Yahya ◽  
Nadeem Nasir ◽  
Majid Niaz Akhtar ◽  
Hasnah Mohd Zaid ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Full Scale ◽  
Scale Modeling

Some Experimental Results on Internal Fire Whirls in a Vertical Shaft

2013 ◽  
Author(s):  
Y. Gao ◽  
G. W. Zou ◽  
S. S. Li ◽  
W. K. Chow
Keyword(s):  
Full Scale ◽  
Pool Fire ◽  
Experimental Results ◽  
Vertical Shaft ◽  
Remote Site ◽  
Scale Modeling ◽  
Key Factor ◽  
Fire Whirl ◽  
Real Scale

Earlier studies on burning a pool fire in a vertical shaft model indicated that appropriate sidewall ventilation provision is a key factor for the onset of an internal fire whirl. Experiments on burning a pool fire inside a real-scale shaft model of 9 m tall were performed to further investigate the swirling motion. The full-scale modeling burning tests were carried out at a remote site in China. Four different ventilation openings were arranged. Results of onsetting of internal fire whirls for the four tests will be reported.

Prediction of Mercury Speciation in Coal-Combustion Systems

2006 ◽  
Author(s):  
Neelesh S. Bhopatkar ◽  
Heng Ban ◽  
Thomas K. Gale
Keyword(s):  
Flue Gas ◽  
Power Plants ◽  
Heterogeneous Reaction ◽  
Oxidation Mechanism ◽  
Full Scale ◽  
Carbon Surface ◽  
Unburned Carbon ◽  
Oxidation Reactions ◽  
Mercury Oxidation ◽  
Chemical Kinetic Model

This study is a part of a comprehensive investigation, to conduct bench-, pilot-, and full-scale experiments and theoretical studies to elucidate the fundamental mechanisms associated with mercury oxidation and capture in coal-fired power plants. The objective was to quantitatively describe the mechanisms governing adsorption, desorption, and oxidation of mercury in coal-fired flue gas carbon, and establish reaction-rate constants based on experimental data. A chemical-kinetic model was developed which consists of homogeneous mercury oxidation reactions as well as heterogeneous mercury adsorption reactions on carbon surfaces. The homogeneous mercury oxidation mechanism has eight reactions for mercury oxidation. The homogeneous mercury oxidation mechanism quantitatively predicts the extent of mercury oxidation for some of datasets obtained from synthetic flue gases. However, the homogeneous mechanism alone consistently under predicts the extent of mercury oxidation in full scale and pilot scale units containing actual flue gas. Heterogeneous reaction mechanisms describe how unburned carbon or activated carbon can effectively remove mercury by adsorbing hydrochloric acid (HCI) to form chlorinated carbon sites, releasing the hydrogen. The elemental mercury may react with chlorinated carbon sites to form sorbed HgCl. Thus mercury is removed from the gas-phase and stays adsorbed on the carbon surface. Predictions using this model have very good agreement with experimental results.

PERFECT—Prediction of Irradiation Damage Effects in Reactor Components: Update of Progress in RPV Mechanics Sub-Project

2007 ◽  
Author(s):  
David Lidbury ◽  
Ste´phane Bugat ◽  
Olivier Diard ◽  
Elisabeth Keim ◽  
Bernard Marini ◽  
...  
Keyword(s):  
Nuclear Power ◽  
Power Plants ◽  
Fracture Behavior ◽  
Current Practice ◽  
Irradiation Damage ◽  
Multi Scale ◽  
Scale Modeling ◽  
Integrated Project ◽  
Main Components ◽  
Reactor Pressure

The EURATOM 6th Framework Integrated Project PERFECT (Prediction of Irradiation Damage Effects in Reactor Components) addresses irradiation damage in RPV materials and components by multi-scale modeling. This approach offers many potential advantages over the conventional empirical methods used in current practice of nuclear plant lifetime management. Launched in January 2004, PERFECT is a 48-month project focusing on two main components of nuclear power plants which are subject to irradiation damage: the ferritic steel reactor pressure vessel (RPV), and the austenitic steel internals. It is the purpose of the present paper to provide an update of progress of work being carried out in the Mechanics Sub-project of PERFECT to predict the fracture behavior of RPVs in PWR and WWER systems.

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