Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

Abstract

Continuous-energy Monte Carlo reactor physics code Serpent 2 was used to model the steady state conditions measured in V-1000 zero-power critical facility at Kurchatov Institute, Moscow, in 1990-1992. The Serpent 2 results were compared to the steady state power measurements of the test facility with all control rods withdrawn from the core. Serpent 2 was used to generate group constants for reactor dynamics code HEXTRAN and a HEXTRAN calculation of the test facility was performed. The original measurements were carried out by inserting partial-length fuel rods into the core. The Serpent 2 calculation allowed direct calculation of the relative powers of these rods instead of relying on pin power reconstruction. The properties of the radial reflector and the gaps between the radial reflector and the fuel assemblies of the test facility were examined with additional detail. The relative power distribution of the zero-power steady state was found to be very sensitive to the properties of the radial reflector. Nodal diffusion calculations carried out previously by several different groups in 2003 found a significant power tilt in the core. This was reproduced in the Monte Carlo calculation. However, the reflector gaps produced another power tilt in addition to the previously known one.
Original languageEnglish
Title of host publication26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland)
Subtitle of host publicationProceedings
Pages485-437
Publication statusPublished - 2016
MoE publication typeNot Eligible
Event26th Symposium of AER on VVER Reactor Physics and Reactor Safety - Helsinki, Finland
Duration: 10 Oct 201614 Oct 2016

Conference

Conference26th Symposium of AER on VVER Reactor Physics and Reactor Safety
CountryFinland
CityHelsinki
Period10/10/1614/10/16

Fingerprint

reflectors
test facilities
rods
reactor physics
control rods
Moscow
assemblies
reactors
energy

Keywords

  • Monte Carlo
  • Serpent2
  • nodal diffusion
  • HEXTRAN
  • V-1000
  • measurements

Cite this

Sahlberg, V. (2016). Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion. In 26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland) : Proceedings (pp. 485-437)
Sahlberg, Ville. / Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion. 26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland) : Proceedings. 2016. pp. 485-437
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abstract = "Continuous-energy Monte Carlo reactor physics code Serpent 2 was used to model the steady state conditions measured in V-1000 zero-power critical facility at Kurchatov Institute, Moscow, in 1990-1992. The Serpent 2 results were compared to the steady state power measurements of the test facility with all control rods withdrawn from the core. Serpent 2 was used to generate group constants for reactor dynamics code HEXTRAN and a HEXTRAN calculation of the test facility was performed. The original measurements were carried out by inserting partial-length fuel rods into the core. The Serpent 2 calculation allowed direct calculation of the relative powers of these rods instead of relying on pin power reconstruction. The properties of the radial reflector and the gaps between the radial reflector and the fuel assemblies of the test facility were examined with additional detail. The relative power distribution of the zero-power steady state was found to be very sensitive to the properties of the radial reflector. Nodal diffusion calculations carried out previously by several different groups in 2003 found a significant power tilt in the core. This was reproduced in the Monte Carlo calculation. However, the reflector gaps produced another power tilt in addition to the previously known one.",
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Sahlberg, V 2016, Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion. in 26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland) : Proceedings. pp. 485-437, 26th Symposium of AER on VVER Reactor Physics and Reactor Safety, Helsinki, Finland, 10/10/16.

Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion. / Sahlberg, Ville.

26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland) : Proceedings. 2016. p. 485-437.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientific

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N2 - Continuous-energy Monte Carlo reactor physics code Serpent 2 was used to model the steady state conditions measured in V-1000 zero-power critical facility at Kurchatov Institute, Moscow, in 1990-1992. The Serpent 2 results were compared to the steady state power measurements of the test facility with all control rods withdrawn from the core. Serpent 2 was used to generate group constants for reactor dynamics code HEXTRAN and a HEXTRAN calculation of the test facility was performed. The original measurements were carried out by inserting partial-length fuel rods into the core. The Serpent 2 calculation allowed direct calculation of the relative powers of these rods instead of relying on pin power reconstruction. The properties of the radial reflector and the gaps between the radial reflector and the fuel assemblies of the test facility were examined with additional detail. The relative power distribution of the zero-power steady state was found to be very sensitive to the properties of the radial reflector. Nodal diffusion calculations carried out previously by several different groups in 2003 found a significant power tilt in the core. This was reproduced in the Monte Carlo calculation. However, the reflector gaps produced another power tilt in addition to the previously known one.

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Sahlberg V. Recalculating the steady state conditions of the V-1000 zero-power facility at Kurchatov institute using Monte Carlo and nodal diffusion. In 26th Symposium of AER on VVER Reactor Physics and Reactor Safety (2016, Helsinki, Finland) : Proceedings. 2016. p. 485-437