The Dynamics of Neutron Activity and Subcriticality of a Nuclear-Dangerous Cluster in the Conditions of NSC-So Complex

Vysotsky, E. D.; Godun, R. L.; Дорошенко, А. О.

doi:10.31717/1813-3584.18.30.9

PNPPSC

2018

DOI: 10.31717/1813-3584.18.30.9

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The Dynamics of Neutron Activity and Subcriticality of a Nuclear-Dangerous Cluster in the Conditions of NSC-So Complex

E. D. Vysotsky¹,

R. L. Godun²,

А. О. Дорошенко³

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2022

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The nuclear safety monitoring system for fuel-containing materials located in destroyed unit No. 4 of the Chornobyl NPP and proposals for its modernization

Saveliev¹,

Godun²,

Pantin³

et al. 2022

Nucl. Phys. At. Energy

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The paper presents a brief description of the Nuclear Safety Monitoring System (NSMS), which is a part of the Integrated Automated Monitoring System of the "Shelter" object (a facility that covers the destroyed Unit No. 4 of the Chornobyl NPP). Further development of the NSMS is proposed by introducing algorithms for automatic identification of neutron anomalies with a help of fuzzy logic and statistical methods; digital filtering of specific irregular impulse interferences leading to metrological system failures; algorithms for predicting changes in neutron flux density and assessing changes in the nuclear hazard of fuel containing materials accumulations.

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The nuclear safety monitoring system for fuel-containing materials located in destroyed unit No. 4 of the Chornobyl NPP and proposals for its modernization

Saveliev¹,

Godun²,

Pantin³

et al. 2022

Nucl. Phys. At. Energy

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Long-term temperature dynamics at the peripherals on nuclearly hazardous clusters of fuel-containing materials located in room 305/2 of the "Shelter" object before and after new safe confinement installation into a design position

Mykhailov¹,

Saveliev²,

Godun³

et al. 2022

Nucl. Phys. At. Energy

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A brief overview of data of automated temperature monitoring systems at the periphery of nuclearly hazardous clusters of fuel-containing materials (FCM NHC) and analytical materials regarding the study of its dynamics at various monitoring points before and after installation of New Safe Confinement (NSC) into its design position, is presented. The characterization of revealed dominant trends in temperature time characteristics underway in the observation period from 1991 to 2015 and the reasons influencing their formation at various distances from FCM NHC boundaries in room 305/2, are addressed. The importance of the work of an expert research system (ERS), which functionally supplemented the existing nuclear safety monitoring system (NSMS) of CHNPP "Shelter" Object (SO) installed instead of decommissioned information and measuring system (IMS "Finish") and other autonomous FCM monitoring systems, is highlighted. A critical analysis of the state of current temperature monitoring around the FCM clusters is provided, and a conclusion about the need to improve the existing monitoring network is made.

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The Dynamics of Neutron Activity and Subcriticality of a Nuclear-Dangerous Cluster in the Conditions of NSC-So Complex

Cited by 2 publications

References 0 publications

The nuclear safety monitoring system for fuel-containing materials located in destroyed unit No. 4 of the Chornobyl NPP and proposals for its modernization

The nuclear safety monitoring system for fuel-containing materials located in destroyed unit No. 4 of the Chornobyl NPP and proposals for its modernization

Long-term temperature dynamics at the peripherals on nuclearly hazardous clusters of fuel-containing materials located in room 305/2 of the "Shelter" object before and after new safe confinement installation into a design position

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