Authors & Affiliations

Elshin A.V., Zhukovsky D.N.
Alexandrov Research Institute of Technoloqy, Sosnovy Bor, Russia

Elshin A.V. – Head of Department, Dr. Sci. (Tech.), Alexandrov Research Institute of Technoloqy. Contacts: 72, Koporskoe shosse, Sosnovy Bor, Leningrad region, Russia, 188540. Tel.: +7(81369) 6-06-19; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Zhukovsky D.N. – Head of Laboratory, Alexandrov Research Institute of Technoloqy.


Reactivity computation hardware used for neutronic measurements at marine propulsion reactor prototypes. The advantage of the new generation PVR-7 reactimeters is shown: operation within the broad range of reactor power change, high linearity of output signal through the three-level discriminator.
The features of techniques (classical and advanced) for defining the reactivity neutronic characteristics of marine propulsion reactor prototypes to justify the conditions of their safe operation and project data are considered. A number of the results is presented which are gained during the operation of reactor facility with the sectoral core configuration characterized by considerable "distortions" of the neutron field and operation of the new generation reactor facility with "flattened" geometry of the core and natural coolant circulation. Significant influence of spacing effect on the measurement results is noted.
The results of experimental determination of control rod efficiency compared with results of the direct calculation and numerical simulation of experiments using the SAPFIR_VVR95-RC program package are given.

reactimeter, neutronic characteristics, marine propulsion reactor prototype, reactor facility, coefficient and effects of reactivity

Article Text (PDF, in Russian)


UDC 621.039.51

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2018, issue 1, 1:2