Dust explosion of solid/solid mixtures: Application to nuclear decommissioning

2015 ◽  
pp. 357-364
Author(s):  
M D'Amico ◽  
O Dufaud ◽  
L Perrin ◽  
S Trélat ◽  
J Latché
Keyword(s):  
Dust Explosion ◽  
Nuclear Decommissioning

NUMERICAL SIMULATION OF THE COMPACTION EFFECT DURING SHOCK WAVE € PARTICLE LAYER NUMERICAL SIMULATION OF THE COMPACTION EFFECT DURING SHOCK WAVE-PARTICLE LAYER INTERACTION

2020 ◽  
Author(s):  
YA. E. POROSHYNA ◽  
◽  
P. S. UTKIN ◽  
Keyword(s):  
Numerical Simulation ◽  
Shock Wave ◽  
Dust Explosion ◽  
Dense Particle ◽  
Layer Interaction ◽  
Particle Layer ◽  
Complex Process ◽  
Impermeable Wall

The problem of shock wave - dense particle layer interaction is a fundamental basis for the study of a more complex process of dust explosion or dust-layered detonation. The work presents results of numerical simulation of the experiment on interaction of an SW with particles layer deposited on the impermeable wall.

Regulation of nuclear decommissioning

Kerntechnik ◽  
2005 ◽  
Vol 70 (1-2) ◽  
pp. 9-13
Author(s):  
R. D. Wendling ◽  
M. Paul
Keyword(s):  
Nuclear Decommissioning

The Economic Implications of Proposed Changes in the Accounting for Nuclear Decommissioning Costs

2000 ◽  
Vol 14 (2) ◽  
pp. 211-233 ◽  
Author(s):  
James R. Boatsman ◽  
Inder K. Khurana ◽  
Martha L. Loudder
Keyword(s):  
Current Practice ◽  
Electric Utility ◽  
Economic Effects ◽  
Financial Statement ◽  
Annual Reports ◽  
Accounting Data ◽  
Economic Implications ◽  
Nuclear Decommissioning ◽  
Nuclear Plants ◽  
Utility Rate

This paper analyzes the accounting effects of the proposed standard Accounting for Obligations Associated with the Retirement of Long-Lived Assets, and considers the economic effects of accounting data in electric utility rate-making. Specifically, we model the financial statement with respect to nuclear decommissioning costs and posit several likely scenarios for the economic implications for the affected firms, their electric consumers, and the rate regulators. The model reveals that the sign of the equity adjustment at adoption and the change in ongoing expense will depend on (1) the age of the plant, and (2) the ratio of the current cost estimate used to compute depreciation under the current practice and the estimated future decommissioning cost. When the model is applied to firms with nuclear plants, we find that the financial statement effects at adoption will be substantial for many firms, and that the ongoing effects of the standard will be to increase the reported expenses of decommissioning substantially. These findings are of interest for three reasons: first, contrary to our data, many of the firms analyzed have stated in their annual reports that the adoption effects of the proposed standard will be immaterial; second, the standard may have a deleterious effect on established regulatory rate-making relationships by changing the basis for consumer rates; and third, the analysis suggests that some firms will be faced with either requesting rate increases or jeopardizing their eligibility for special regulatory accounting treatment. Any of these outcomes create potentially severe problems in an industry on the brink of monumental economic and structural change, that is, the transition from a regulated monopoly to competition.

Preparation and performance of novel APP/NaY–Fe suppressant for coal dust explosion

2021 ◽  
Vol 69 ◽  
pp. 104374
Author(s):  
Qingxi Wei ◽  
Yansong Zhang ◽  
Kun Chen ◽  
Bo Liu ◽  
Xiangbao Meng ◽  
...  
Keyword(s):  
Coal Dust ◽  
Dust Explosion ◽  
And Performance

scholarly journals Industrial Dust Explosions. A Brief Review

2021 ◽  
Vol 11 (4) ◽  
pp. 1669 ◽  
Author(s):  
Rolf K. Eckhoff ◽  
Gang Li
Keyword(s):  
Case History ◽  
Final Section ◽  
Dust Explosion ◽  
Research Issues ◽  
Industrial Dust ◽  
Dust Clouds ◽  
Factors Influencing ◽  
History Of ◽  
Dust Explosions ◽  
Hybrid Mixtures

This paper first addresses the question: what is a dust explosion? Afterwards, some specific issues are briefly reviewed: materials that can give dust explosions, factors influencing ignitability and explosibility of dust clouds, the combustion of dust clouds in air, ignition sources that can initiate dust explosions, primary and secondary dust explosions, dust flash fires, explosions of “hybrid mixtures”, and detonation of dust clouds. Subsequently, measures for dust explosion prevention and mitigation are reviewed. The next section presents the case history of an industrial dust explosion catastrophe in China in 2014. In the final section, a brief review is given of some current research issues that are related to the prevention and mitigation of dust explosions. There is a constant need for further research and development in all the areas elucidated in the paper.

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