Travin Sergei M.
Travin Sergei M.

Травин Сергей Михайлович Travin Sergei M.


Publications

Analysis and assessment of the risk of accidents of a structure as a system by the method of "Fault Tree Analysis" on the example of a nuclear power facility under seismic impact
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The article discusses a method for analyzing the risk assessment of failures of the structure as a system by developing a "Fault Tree Analysis". Formulas were proposed for the numerical estimation of the probability of system failure, taking into account the stochastic dependence of the failures of its elements. On the example of a nuclear power facility, a "wet" stand-alone storage facility for spent nuclear fuel, an analysis of possible scenarios of a facility failure was carried out, a "Fault Tree Analysis" was developed and calculated under seismic impact. It has been determined that the risk of structure as a
system under seismic impact is determined by the risk of falling process
equipment and building structures on the overlap of storage compartments or
stored nuclear fuel. To increase the safety of building structures under
seismic impact, it is necessary to pay special attention to the design features
of the frame part and the interface between the monolithic storage compartment
and the frame part, as the most vulnerable link. 

Taking into Account the Dynamic Properties of the Soil when Calculating the Pile Foundations of Nuclear Facilities under Seismic Effcts
Issue: №4 2019
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Pile foundations are among the most reliable and proven types of foundations. They used in nuclear power engineering for a variety of impacts, including seismic. At the same time, one of the most diffilt issues is the evaluation of the strength of piles during an earthquake, taking into account the dynamic properties of the base. Currently, there are various approaches to this assessment, the results of which can signifiantly affct the objective condition of the bearing capacity of the piles. In this regard, it is necessary to consider the degree of inflence of various ways of taking into account the dynamic properties of the base on the results of calculating the strength of piles during an earthquake. The study of these issues is devoted to this article.

Application of Damping Devices to Improve Seismic Resistance of Existing Wet Spent Nuclear Fuel Storage Facility
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“Wet” spent nuclear fuel repositories represent a potential hazard to people and the environment, so their seismic stability is an important and urgent issue. Design feature of such buildings is the presence of rigid concrete bottom and flexible framed top, which is the most vulnerable to earthquakes.

This article describes the evaluation of the effectiveness of the damping devices to improve the seismic resistance of the flexible framed top of the existing «wet» storage facility of spent nuclear fuel of VVER-1000 reactors. 

About Intensity of Fluctuations of Construction Designs of «Wet» Storage of Spent Nuclear Fuel at the Earthquake
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Pools for the long term storage of spent nuclear fuel are extremely dangerous buildings. Their seismic resistance is very important and topical theme. Design feature of such structures is the presence of a rigid bottom and flexible frame top, which is most vulnerable to earthquakes.

The article considers the influence of various factors on the intensity of the vibrations of flexible frame top оf VVER-1000 spent nuclear fuel repository during earthquake. These factors are: soil stiffness, frequency composition of the initial impact and functioning capacity of repository.

About the impact of damage to building structures of existing "wet" storage of spent nuclear fuel at its seismic resistance
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Pools for the long term storage of spent nuclear fuel are extremely dangerous buildings. Their seismic resistance is very important and topical theme. Design feature of such structures is the presence of a rigid bottom and flexible frame top, which is most vulnerable to earthquakes.

This article presents the results of a study of the effect of damages of building structures of the existing "wet" storage of spent nuclear fuel at its earthquake resistance