DOI: 10.55176/2414-1038-2019-4-15-22
Authors & Affiliations
Fraaz E.S., Akimov A.V., Malkov A.P.
JSC “State Scientific Center — Research Institute of Atomic Reactors”, Dimitrovgrad, Russia
Fraaz E.S. – Leading research engineer, JSC “State Scientific Center – Research Institute of Atomic Reactors”. *Contacts: 9, Zapadnoye Shosse, Dimitrovgrad, Ulyanovsk region, 433510. Tel.: +7 (84235) 7-39-73; e-mail:
Akimov A.V. – Research engineer, JSC “State Scientific Center – Research Institute of Atomic Reactors”.
Malkov A.P. – Head of department of nuclear safety service, Dr. Sci. (Techn.), JSC “State Scientific Center — Research Institute of Atomic Reactors”.
Abstract
The main results of neutron and physical parameters calculations, which are important for nuclear safety during storage and transportation of irradiated working and loop fuel assemblies and irradia-tion devices of the MIR reactor, as well as working in radiation-protective research cameras for the assembling and disassembling of irradiation devices, are introduced in this report. The analysis was made in full accordance with requirements of the state normative research nuclear facilities nuclear safety documents. The results of effective neutron reproduction coefficient calculations received by the MCU-RFFI/A program were used for the analysis. The various emergency situations associated with personnel errors, falling of products during their transportation, pouring out the contents of covers, violation of the products placement order, changing in inhibitor (in particular water) density were considered during the analysis. The full unloading of the reactor core in case of an accident was also considered. As a result of the neutron and physical calculations analysis, safety of spent nuclear fuel storage, at all stages of its transportation, as well as working in radiation- protective research cameras subject to established restrictions was proved. Restrictions for the number of products and the geometry of their placement in the cooling pool, transport corridor, and radiation - protective cameras were set.
Keywords
nuclear safety, MIR reactor, cooling pool, fulfilled nuclear fuel, research radiation-protective cameras, effective coefficient of reproduction of neutrons, MCU-RFFI/A program, settlement models, neutron and physical calculations, transport and technological operations
Article Text (PDF, in Russian)
UDC 621.039.58
Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2019, issue 4, 4:2