Fusion Programme - ENEA - Fusione

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Fission TechnologyFig. 8.37 - Creep fatigue setup and sample in HLMinteraction process operating in LBE in a certaintemperature range. The tests were first performed at300°C for which the fatigue resistance of the 316L SSis decreased in contact with LBE. However, noinfluence of holding time has so far been proved for the316L fatigued in LBE at 300°C, contrary to what wasfound with T91 steel after a number of relaxation–fatigue tests in LBE.A large effort has been dedicated to the development of oxygen sensors and control systems as well aspurification systems. An oxygen control system in a pool-type facility was developed on the basis of dataand experience gathered from loop devices. A two-phase experiment was designed, to be performed inthe CIRCE multipurpose facility, in order to assess the most effective integrated system for non-metallicimpurity control and monitoring in a complex pool system. The work was performed in collaboration withthe Institute of Physics and Power Engineering (IPPE) Obnnisk, Russian Federation. A gas closed circuitequipped with mechanical filters, oxygen and water sensors and moisture separation devices will be usedfor oxygen diffusion in the pool experiment, in the first part of the experimental campaign. The second partwill consist in testing a mass exchanger device, together with an open gas circuit, equipped with sensorsand instrumentation. The oxygen sensors for the liquid phase were made by ENEA and IPPE. Theexperiments will test filtering systems for the gas phase, different designs of oxygen sensors, integratedinstrumentation for the gas phase, integrated instrumentation for the liquid phase and gas bubblers.T10IHXT13 T123-wayvalveT9T8IsolationvalveTHXIsolationvalveTargetT7T5BypassMEGAPIE experiment post test analysis. Within theframework of the EUROTRANS project (domainDEMETRA), post-test analysis of the MEGAPIE TargetExperiment was performed to assess RELAP5, theENEA reference system code for transient and safetyanalysis of LBE and lead cooling systems. The code,which was used in the design phase to simulate thebehaviour of the target cooling system at differentoperational and off-normal conditions, was first assessedon the single-pin tests at ENEA Brasimone andsuccessively on the MEGAPIE integral tests (MITs) atVilligen, Switzerland. The main result of these activities,described in previous reports [8.11, 8.12], produced theimplementation in the code of a dedicated correlation forsimulation of the LBE-oil heat exchanger (THX).Fig. 8.38 - SINQ loop layoutThe post-test analysis concerned the thermohydraulicbehaviour of the cooling system in a SINQ (Swissspallation neutron source) configuration (fig. 8.38) in steady state and in transient conditions:2007 Progress Report• Component calculations confirmed the adequacy at high power (up to 540 kW) of the Gnielinskycorrelation, expressly implemented in the code for the thermal exchange in the THX oil side and alreadyassessed on the MITs at low power (up to 200 kW).• Cooling loop calculations showed that the code is capable of simulating the thermohydraulicperformance of the circuit (table 8.V) and considers in particular the intermediate cooling loop in oil.Since the uncertainty on LBE mass flow-rate measurements in the target loop is too high, a significantevaluation of the code accuracy cannot be achieved.Simulation of an accelerator trip event has confirmedthe applicability of the code to the transient conditions(fig. 8.39).[8.12] ENEA – Technical and Scientific Division for134
8. R&D on Nuclear FissionTable 8.V – SINQ temperature distribution (target power 540.3 kW)2007 Progress ReportCircuitcomponentFlow rate andtemperatureExperimentalRELAPstandardRELAPmodifiedTHX LBE Mflow (kg/s) 41.23 imposed imposedT7 (inlet) °C 319.6 316.2 316.2T5 (outlet) °C 229.5 imposed imposedTHX Oil Mflow (kg/s) 9.25 imposed imposedT8 (inlet) °C 185.8 175.4 185.3T9 (outlet) °C 212.9 203.5 212.6IHX Oil Mflow (kg/s) ? 2.8 2.72T10(inlet) °C 214.4 204.1 212.9T8 (outlet) °C 112.0 104.7 110.9IHX Water Mflow (kg/s) 8.04 imposed imposedT12 (inlet) °C 33.8 imposed imposedT13 (outlet) °C 49.3 50.3 50.1Temperature (°C)3.5×10 22.4×10 2T7 exp.2.0×10 2 1.8×10 20 200 400 600 0 200 400 600T9 exp.T9 calc.3.0×10 22.2×10 2T7 calc.T8 exp.2.5×10 2 T5 exp. T5 calc.2.0×10 2T8 calc.Time (s)Time (s)Fig. 8.39 - THX LBE and oil temperature during accelerator tripVirtual European LeadLaboratoryENEA continued working as coordinator for the Virtual European LeadLaboratory (VELLA), the FP6 project for European research on HLMtechnologies for nuclear applications (see Progress Report 2006).The VELLA official website, which will become a central point of information on HLM technologies, hasbeen constructed by ENEA, following all the rules regarding portability and accessibility of information onthe web. The site is now available at www.3i-vella.eu and is updated every six months. The first threeissues of the VELLA electronic newsletter have been edited and circulated among the scientists involvedin activities related to HLM technologies for nuclearapplications. The distribution list for the newsletterAdvanced Physics, 2005 Progress Report, Sect. 1presently numbers around 1500 contacts.135
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PROGRESS REPORT2007Nuclear Fusion a
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ContentsPART I - FUSION PROGRAMME 7
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2007PART IV - MISCELLANEOUS 18314.
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2007analyses of the missions to be
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Fusion Programme2007 Progress Repor
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Fusion ProgrammeTable 1.I - Summary
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Fusion ProgrammeFollowing a Europea
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Fusion Programmen e (10 20 m -3 )3.
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Fusion Programmewas not affected by
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Fusion ProgrammeShear Alfvén wavec
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Fusion Programmen H (10 20 /m 3 )0.
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Fusion Programmei.e., typically, ra
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Fusion ProgrammeENEA has provided t
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Fusion Programmennα6 LIF6 LIF9 BeI
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Fusion Programmedifference between
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Fusion ProgrammeIntroductionThe suc
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Fusion ProgrammeMinority ions, acce
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Fusion ProgrammeThe cryostat overal
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Fusion ProgrammeIntroductionThe tec
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Fusion ProgrammeThe main results so
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Fusion ProgrammeInfrared absorption
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Fusion ProgrammeFig. 3.8 - Frascati
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Fusion ProgrammeThe second year of
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250Fusion Programmeflow-rate in the
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Fusion ProgrammeThe aim of the work
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Fusion ProgrammeFig. 3.21 - X-ray s
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Fusion ProgrammeRange (mm)593583573
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Fusion ProgrammeZ (m)6420-2-4-6sour
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Fusion Programmea) b)c)Fig. 3.31 -
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Fusion Programmeactivation. Eight r
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Fusion Programme1×10 -6Tensile cre
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Fusion ProgrammeAcc V Spot Magn Det
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Fusion Programmelubricants cannot b
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Fusion ProgrammeTritium roomTritium
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Fusion ProgrammeImplications for PS
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Fusion ProgrammeThe development and
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Fusion ProgrammeIntroductionDuring
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Fusion Programme19.5Section view B-
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Fusion Programmeresults and particu
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Fusion ProgrammeFollowing the exten
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Miscellaneous14.1 Advances in the I
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Miscellaneoususing a full wave code
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MiscellaneousAt present the effect
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MiscellaneousSuperAGILE view of the
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Abbreviations and AcronymsAacACPADS
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Abbreviations and AcronymsEFITEHRSE
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Abbreviations and AcronymsITERITGIT
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Abbreviations and AcronymsPFWPGAPHY
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Abbreviations and AcronymsVVDEVELLA
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