Frapcon fraptran activity at vtt
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FRAPCON/FRAPTRAN activity at VTT. FRAPCON users group meeting V. Tulkki, A. Arffman VTT Technical Research Centre of Finland. Code use at VTT. Past activity Current and near-future projects. Recent Projects.

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FRAPCON/FRAPTRAN activity at VTT

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Frapcon fraptran activity at vtt

FRAPCON/FRAPTRAN activity at VTT

FRAPCON users group meetingV. Tulkki, A. ArffmanVTT Technical Research Centre of Finland


Code use at vtt

Code use at VTT

  • Past activity

  • Current and near-future projects


Recent projects

RecentProjects

  • Simulation of past Halden LOCA testsin cooperation with Quantum Technology (Sweden) [1]

    • VTT uses FRAPTRAN-GENFLO for referencecalculation and TH boundaryconditions for QT’smodified FRAPTRAN calculations

    • Ongoing for IFA-650.5->

  • Simulation of Halden VVER LOCA test IFA-650.11

    • Rupturelocation and timewellreplicated, however

    • Difficulty to replicatetemperatureevolutionafter the rupture (similareffect in someother LOCA teststoo)

  • [1] Tero Manngård, Ali Massih, Jan-Olof Stengård, Evaluation of the Halden IFA-650 loss-of-coolant accident experiments 2, 3 and 4, http://dspace.mah.se/handle/2043/13443


Recent projects1

RecentProjects

  • Statistical full-core LOCA evaluation

    • Presentedin TopFue l2011 [2]

  • Upgrading of FRAPTRAN-GENFLO TH coupling for boundaryconditionsallowing for totalchannelemptyingand downwardsflow

    • LOCA conditions in largereactorsquiteharsh

  • FRAPCON used in SCANAIR initialization [3]

    • Initializationmoduleby IRSN

    • Interpretation of gapduring RIA

[2] 2011 Water Reactor Fuel Performance Meeting, paperT3-028

[3] A. Arffman, A. Moal, Georgentum, V, Evaluation and Adaptation of the RIA code SCANAIR for modelling BWR fuel and conditions, TopFuel 2012


Current situation and future issues

Currentsituation and futureissues

  • Tradition of keepingourownmodified version

    • Major modificationspresented in usersgroupmeetingadjanced to Topfuel 2010

    • Our person responsible for FRAPTRAN and FRAPCON maintenance is about to retire

    • Knowledge transferongoing

  • LOCA damagedrodestimation for EPR still a currentissue

    • <10% rodsdamaged in LBLOCA

  • Participation in OECD uncertaintyanalysis in bestestimatemodelling (UAM) workshop with both FRAPCON and ENIGMA codes

    • Enhancingourcapability for uncertaintyestimations


Frapcon fraptran activity at vtt

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