Generating albedo boundary conditions for nodal diffusion codes using serpent 2

Ville Valtavirta, Jaakko Kuopanportti, Antti Rintala

Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review


We use the Serpent Monte Carlo code to produce total and partial albedo boundary conditions that can be used to model the Loviisa NPP VVER-440 core with the nodal neutronics tools of Fortum. The albedo generation process is described in detail. The dependence of the generated albedos on boron content and water density is investigated and a clear distinction is noted in water density dependence between regions containing mostly water and those containing mostly structural materials. The Serpent generated albedos are currently used in production calculations for modeling the Loviisa reactors at Fortum.

Original languageEnglish
Pages (from-to)778-785
Number of pages8
JournalEPJ Web of Conferences
Publication statusPublished - 2020
MoE publication typeA4 Article in a conference publication
EventInternational Conference on Physics of Reactors, PHYSOR 2020: Transition to a Scalable Nuclear Future - Cambridge, United Kingdom
Duration: 28 Mar 20202 Apr 2020


  • Albedo
  • Apros
  • Boundary condition
  • Nodal diffusion
  • Serpent


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