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@PHDTHESIS{Schlgl:877983,
      author       = {Schlögl, Bärbel},
      title        = {{O}xidationskinetik innovativer
                      {K}ohlenstoffmaterialienhinsichtlich schwerer
                      {L}ufteinbruchstörfälle in{HTR}’s und
                      {G}raphitentsorgung oder {A}ufarbeitung},
      volume       = {89},
      school       = {RWTH Aachen},
      type         = {Dissertation},
      address      = {Jülich},
      publisher    = {Forschungszentrum Jülich GmbH Zentralbibliothek, Verlag},
      reportid     = {FZJ-2020-02557},
      isbn         = {978-3-89336-676-7},
      series       = {Schriften des Forschungszentrums Jülich Reihe Energie $\&$
                      Umwelt / Energy $\&$ Environment},
      pages        = {IX, 117 S.},
      year         = {2010},
      note         = {Dissertation, RWTH Aachen, 2010},
      abstract     = {Currently future nuclear reactor concepts of the Fourth
                      Generation (Gen IV) are underdevelopment. To some extend
                      they apply with new, innovative materials developed just for
                      thispurpose.This thesis work aims at a concept of Generation
                      IV Very High Temperature Reactors (VHTR) inthe framework of
                      the European project RAPHAEL (ReActor for Process heat,
                      Hydrogen AndELectricity generation). The concept named
                      ANTARES (AREVA New Technology based onadvanced gas-cooled
                      Reactors for Energy Supply) was developed by AREVA NP. It is
                      a heliumcooled, graphite moderated modular reactor for
                      electricity and hydrogen production, by providingthe
                      necessary process heat due to its high working
                      temperature.Particular attention is given here to oxidation
                      kinetics of newly developed carbon materials (NBG-17) with
                      still unknown but needed information in context of severe
                      air ingress accident in VHTR’s.Special interest is paid to
                      the Boudouard reaction, the oxidation of carbon by CO2. In
                      case of anair ingress accident, carbon dioxide is produced
                      in the primary reaction of atmospheric oxygenwith reflector
                      graphite. From there CO2 could flow into the reactor core
                      causing further damage byconversion into CO. The purpose of
                      this thesis is to ascertain if and to what degree this
                      couldhappen.First of all oxidation kinetic data of the
                      Boudouard reaction with NBG-17 is determined byexperiments
                      in a thermo gravimetric facility. The measurements are
                      evaluated and converted intoa common formula and a
                      Langmuir-Hinshelwood similar oxidation kinetic equation, as
                      input forthe computer code REACT/THERMIX. This code is then
                      applied to analyse severe air ingressaccidents for several
                      air flow rates. The results are discussed for two accident
                      situations, in whicha certain graphite burn off is achieved.
                      All cases show much more damage to the graphite
                      bottomreflector than to the reactor core. Thus the bottom
                      reflector will lose its structural integrity muchearlier
                      than the core itself will be damaged by oxidation.},
      cin          = {PRE-2000 ; Retrocat},
      cid          = {I:(DE-Juel1)PRE2000-20140101},
      pnm          = {899 - ohne Topic (POF3-899)},
      pid          = {G:(DE-HGF)POF3-899},
      typ          = {PUB:(DE-HGF)3 / PUB:(DE-HGF)11},
      url          = {https://juser.fz-juelich.de/record/877983},
}