## Geospatial Data Management to Solve the Problems of Radiohydroecological Monitoring on the Territory of the Chоrnobyl NPP Industrial Site

N. V. Sosonna Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.10 Abstract Radiohydroecological monitoring has been carried out by the Department of Design of Facilities for Radiation-Nuclear Technologies of the Institute for Safety Problems of Nuclear Power Plants of the National Academy of Sciences … Read more

## Radioactive Aerosols Monitoring of the Surface Air near the Shelter Object within 1998–2019

O. K. Kalynovskyi, V. O. Krasnov, O. V. Filippov Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.9 Abstract The results of long-term monitoring (1998–2019) of radioactive aerosols (RA) in the surface air near the Shelter object (SO) during works on projects implementation on creation … Read more

## Simulation of the Radiation Situation during the “Early” Dismantling of the Building Structures of the Shelter Object

О. V. Balan1, F. V. Lanskyh2, S. A. Paskevych1, S. S. Pidbereznyi1 1 Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine 2 SSE “Chornobyl NPP”, Slavutych, Kyiv region, 07100, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.8 Abstract A model of the “early” dismantling of the building structures of the Shelter … Read more

## Speciation of Radionuclides in the Bottom Sediments of Room 012/7 of the NSC – Shelter Object

O. O. Odintsov, L. A. Palamar, L. B. Chikur Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.7 Abstract After installation of the Arch of New Safe Confinement (NSC) into design position, precipitations intake in the underroof space of the Shelter object ceased, and water … Read more

## Investigation of the Radiation Condition at the Industrial Site of the Shelter Object

V. V. Yehorov, L. I. Pavlovsky, D. O. Khomenko Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.6 Abstract The territory of the industrial site of the New Safe Confinement of the Shelter object (NSC SO) was investigated after the installation of the arch structure … Read more

## Modeling and Visualization of the Radiation State on the Site of the Storage of Containers of CSNFSF with the Use of the Software Complex ChNPP VRDose Planner

V. V. Derenhovskyi, Y. A. Menshenin Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.5 Abstract The results of three-dimensional modeling of working conditions of personnel in radiation-hazardous conditions of the Centralized Spent Nuclear Fuel Storage Facility (CSNFSF) of WWER type reactors of domestic NPPs, … Read more

## Investigation of Radionuclide Contamination of Materials Stored in Solid Radwaste Repository of the Chornobyl NPP

O. V. Mykhailov1, A. K. Terzi2 1 Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 36a, Kirova st., Chornobyl, 07270, Ukraine, 2 State Specialized Enterprise “Chornobyl NPP”, Slavutych, 07101, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.4 Abstract The composition and features of radionuclide contamination of solid radioactive waste (SRW) stored in the western “light” compartment of … Read more

## The Optimization of Calculation Time and Statistical Error for the Radiation Shielding Properties Simulation of Containers for Storage of Spent Nuclear Fuel

M. I. Holiuk, O. M. Khotiaintseva, V. M. Khotiaintsev, A. V. Nosovskyi, V. I. Gulik Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 12, Lysogirska st., Kyiv, 03028, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.3 Abstract The radiation protection is an important issue in the operation of nuclear power plants and artificial radioactive sources, which include … Read more

## Optimization of the Test Frequency of NPP Active Safety Systems in the Over-Design Operation Life

V. I. Skalozubov, V. Yu. Kochnyeva, Alali Mohammad, Algerby Rabia K. Ali Odessa National Polytechnic University, 1, Shevchenko ave, Odesa, 65044, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.2 Abstract The need to optimize the test frequency of thermal mechanical equipment of active safety systems of nuclear power plants is determined by the fact that, on the one hand, an … Read more

## Prospective Directions of Increasing Operating Reliability and Providing Operational Management of the NPP Main Equipment Resources

І. G. Sharaevsky, Т. S. Vlasenko, L. B. Zimin, А. V. Nоsоvskyi, N. М. Fіаlkо, G. І. Sharaevsky Institute for Safety Problems of Nuclear Power Plants, NAS of Ukraine, 12, Lysogirska st., Kyiv, 03028, Ukraine DOI: doi.org/10.31717/2311-8253.21.3.1 Abstract On the basis of generalization tendencies of safety problems development concerning the basic types of water-cooled power … Read more

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