Mayak Industrial Association

Ozërsk, Russia

Mayak Industrial Association

Ozërsk, Russia

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Kudinov A.S.,Khlopin Radium Institute | Goletsky N.D.,Khlopin Radium Institute | Zilberman B.Ya.,Khlopin Radium Institute | Fedorov Yu.S.,Khlopin Radium Institute | And 9 more authors.
Atomic Energy | Year: 2013

Model and real solutions are used to study and monitor the dissolution and extraction operations in the reprocessing of spent fuel AM(B) based on uranium oxide or uranium-molybdenum alloy (alloy OM-9, 9% molybdenum) with a sublayer of mass 12% comprised of Ca, Mg or the alloy Cu-Mg individually and in a batch with VVER-440. Batching of different types of spent fuel or their solutions should be done for in order to clarify them. © 2013 Springer Science+Business Media New York.


Berezyuk A.I.,Mayak Industrial Association | Rovnyi S.I.,Mayak Industrial Association | Khusainov M.R.,Mayak Industrial Association | Golub Y.S.,Sverdlovskii Research and Design Institute of Chemical Machine Building SverdNIIkhimmash | And 2 more authors.
Chemical and Petroleum Engineering | Year: 2013

Problems related to axisymmetric deformation of a truncated conical shell of constant thickness under the effect of a constant pressure are encountered when calculating the linear stress-deformed state of shell structures used in the nuclear fuel cycle within the framework of a model of the Kirchhoff-Love parameters. In practice, an analytic solution of such boundary-value problems leads to certain mathematical difficulties related to integration of one of the two differential decision equations, which is of fourth order, reduced to second order by means of a complex transformation. The differential decision equations for a truncated conical shell obtained following Meisner were transformed without any reduction in order to a new form more convenient for practical integration by means of infinite power series. The solution found in terms of power series was tested in compiling a test example of a calculation of the parameters of a deformed annular apparatus one of whose platforms is in the form of a truncated conical shell. The test example contains the results of an analytic solution of the above boundary-value problem and finite-element modeling using the CAN program. The error of the calculated stresses is estimated for an analytic solution, making it possible to consider the solution as a standard for comparison. © 2013 Springer Science+Business Media New York.


Aleeva T.B.,National Research Nuclear University MEPhI | Bushuev A.V.,National Research Nuclear University MEPhI | Kozhin A.F.,National Research Nuclear University MEPhI | Zubarev V.N.,National Research Nuclear University MEPhI | And 3 more authors.
Atomic Energy | Year: 2016

A method is proposed for determining the mass and isotopic composition of the plutonium warehoused in containers at the RT-1 plant of the Industrial Association Mayak. A single measurement system with a detector based on ultrapure germanium is used for the measurements. The mass is determined according to the pulse count rate in 239Pu peaks. The correction for self-absorption of radiation in a container is determined by measuring the transmission of radiation emitted from an external source and by Monte Carlo calculations. Estimates show that the total error in determining the plutonium mass by the new method is 11% (P = 0.95). The method can be used to perform confirmatory measurements in the accounting and control system for nuclear materials. © 2016 Springer Science+Business Media New York


Slyuntchev O.M.,Mayak Industrial Association | Bobrov P.A.,Mayak Industrial Association | Kichik V.A.,Gidrotekh Company | Starikov E.N.,Gidrotekh Company
Atomic Energy | Year: 2012

The consolidated results of tests performed in 2009-2010 on a commercial prototype facility for purifying low-level liquid radwastes are presented. More than 4200 m 3 were processed during the tests, and purified water with residual activity below the first intervention level was obtained. The activity of α- and β-emitting radionuclides in the purified water was 0.35 Bq/liter on average and <1 Bq/liter, respectively. The data obtained show that the purified water can be discharged into an open drainage network without any limitations or recycling into production. The two-step ultrafiltration scheme used decreases energy consumption on reprocessing considerably. © 2012 Springer Science+Business Media, Inc.


Aleeva T.B.,National Research Nuclear University MEPhI | Bushuev A.V.,National Research Nuclear University MEPhI | Kozhin A.F.,National Research Nuclear University MEPhI | Petrova E.V.,National Research Nuclear University MEPhI | And 4 more authors.
Atomic Energy | Year: 2013

The correlation relations for determining the 242Pu mass fraction which are used in the MGA and FRAM computer codes are compared with the relations proposed in the present article for plutonium stored in the RT-1 plant of the Industrial Association Mayak. The need to determine the 242Pu mass fraction using the correlations arises in nondestructive analysis of plutonium. The MGA and FRAM codes use correlations which are based on data on the isotopic composition of the plutonium that has accumulated in American reactors so that the possibility of using these codes for Russian plutonium must be checked. This check was based on an analysis of data obtained on more than 6000 isotopic compositions during certification of the RT-1 plutonium. A characteristic of the relation proposed in this article is that it takes account of the change in the isotopic composition of plutonium over time. © 2013 Springer Science+Business Media New York.


Bushuev A.V.,National Research Nuclear University MEPhI | Kozhin A.F.,National Research Nuclear University MEPhI | Aleeva T.B.,National Research Nuclear University MEPhI | Zubarev V.N.,National Research Nuclear University MEPhI | And 4 more authors.
Atomic Energy | Year: 2010

A nondestructive method of determining the mass of large plutonium samples which is based on measuring their characteristic γ radiation is presented. The mass and the isotopic composition of the plutonium were determined according to a single measured γ spectrum in two energy ranges: the middle range, where the isotopic composition of plutonium is determined from the lines of the plutonium isotopes, and high-energy, where the radiation of the products of the spontaneous fission of plutonium gives information about the mass of the sample. The dependence of the counting rate in the peaks of the fission products on the effective mass of 240Pu was calibrated according to measurements performed with standard samples of the enterprise. As a result of the measurements, corrections were made for the self-absorption of γ radiation and induced fission, which were calculated by the Monte Carlo method. The error in determining the plutonium dioxide mass is 3-10% for containers with different cool-down times and isotopic composition of plutonium. © 2009 Springer Science+Business Media, Inc.


Bushuev A.V.,National Research Nuclear University MEPhI | Aleeva T.B.,National Research Nuclear University MEPhI | Kozhin A.F.,National Research Nuclear University MEPhI | Petrova E.V.,National Research Nuclear University MEPhI | And 4 more authors.
Atomic Energy | Year: 2012

Plutonium dioxide is stored in special containers, holding about 3 kg plutonium each, in a dump at the RT-1 plant of the Industrial Association Mayak. The certificates on the containers with plutonium produced in 1990-2000 do not contain any data on the isotopic composition. Without removing the plutonium from a container, the isotopic composition can be determined only by γ-spectrometry. This paper compares the MGA and FRAM computer codes used to determine the isotopic composition of the plutonium when performing measurements on samples with a large mass. © 2012 Springer Science+Business Media New York.

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