Fusion Programme - ENEA - Fusione

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Fusion ProgrammeAcc V Spot Magn Det WD Exp100 μm23.0 kV 5.0 250x SE 29.8 823 PM14204316L 1000 h 350°CFig. 3.45 – LIFUS III lithium loopFig. 3.46 - AISI 316 specimen exposed to 16 m/s Li flow for 1000 hPreliminaryremote handlinghandbook forIFMIF facilitiesOne of the most technically challenging activities, requiring sophisticated machinesand remote handling, is the maintenance and refurbishment of the IFMIF componentslocated in the target, test cell and accelerator facilities.The Preliminary Remote Handling Handbook (PRHH) is the first attempt to treathomogeneously the remote handling activities for the IFMIF facility. The objectives ofthe handbook are to identify equipment and tools to be used during the RH maintenance tasks, devise aRH strategy to fulfil the stringent requirements of IFMIF plant availability, design the RH procedures for themain components and systems and integrate in a unique document the work already done by the differentresearch associations.The final version of the PRHH (completed at the end of 2007) consists of five chapters:. 1 - Introductionand general description; 2 - Design guidelines; 3 - Remote handling needs; 4 - Remote handlingequipment; 5 - Remote handling procedures. The manual was compiled by RH experts from the ENEA andCommissariat à l’Energie Atomique (CEA) Associations. ENEA dealt with the RH activities for the targetand test-cell facilities; CEA with the RH activities for the accelerator and the conventional facilities. ENEAwas also responsible for coordinating the work.RH maintenanceof targetassemblyThe back-plate of the IFMIF target assembly system is the component most heavilyexposed to a high neutron irradiation flux (up to 50 dpa/fpy), so its expected lifetimeis estimated to be less than one year. To increase the overall target lifetime and toreduce the waste materials, the reference target design is based on a removableback–plate.2007 Progress ReportThe two options of the removable back-plate (the so-called “cut & reweld” and “bayonet” concepts)presently under investigation differ greatly in the locking systems to seal the edge of the back-plate and inthe RH approach for its substitution. The cut & reweld option considers the removal of the entire targetassembly from the test cell cavern, and then its transport to a hot cell area where the back-plate isexchanged by using a cutting & welding YAG laser machine (fig. 3.47). The back-plate bayonet concepthas been designed to allow back-plate replacement without removing any other components of the targetassembly system (back-plate in- situ replacement) (fig. 3.48). Detachment of the back-plate from the target66
3. Technology Programme2007 Progress Reportassembly in this case is performed by using a simple angular bolting tool.The replaceable back-plate bayonet concept developed and implemented by ENEA is the EU referencedesign for the IFMIF target assembly system, whilst the cut & reweld concept was developed by the JapanAtomic Energy Agency (JAEA).During 2007 ENEA’s activities were focussed on the preparation of a suitable work programme to beperformed along all the EVEDA phase. The programme also includes several R&D activities to validate theback-plate bayonet concept from the technological viewpoint as well as to assess the suitability of thedesigned target assembly for remote handling. In particular the 2007 activities centred on validating theback-plate bayonet concept design. Therefore a wide programme of technological tests was set up toassess its suitability to operate under IFMIF-relevant operating conditions. It includes the followingactivities:• Sealing capability of the gasket. Sealing of the target assembly system is provided by a soft ironHelicoflex gasket. During lithium jet operation, evaporation-condensation of the flowing lithium couldcause an accumulation of lithium in the groove of the gasket and in the outer jacket of the gasket itself.The corrosive nature of the lithium could compromise the sealing capability of this kind of gasket.Accordingly the activity is aimed at verifying the capability of the proposed sealing system undersimulated IFMIF conditions.• Evaluation of the impact of swelling on the functionality of the tightening system. The closing system ofthe back-plate bayonet concept consists of three skates mounted on the upper, lower and lateral sidesand six bolts on the fourth side. Evaluation of the swelling phenomena (i.e., ΔV/V% on the bolts/holes)on the bolted coupling system becomes a precondition for the validation of the back-plate bayonetconcept design. This activity is performed in collaboration with the University of Palermo.• Dicronite assessment. Due to the extreme operating conditions (radioactivity, high temperature, etc.)Fig. 3.47 - Removal of the target assembly for the “cut &reweld” conceptFig. 3.48 - In-situ back–plate replacement for the“bayonet concept”67
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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.
Page 18 and 19: Fusion Programme2007 Progress Repor
Page 20 and 21: Fusion Programmewas not affected by
Page 22 and 23: Fusion ProgrammeShear Alfvén wavec
Page 24 and 25: Fusion Programmen H (10 20 /m 3 )0.
Page 26 and 27: Fusion Programmei.e., typically, ra
Page 28 and 29: Fusion ProgrammeENEA has provided t
Page 30 and 31: Fusion Programmennα6 LIF6 LIF9 BeI
Page 32 and 33: Fusion Programme2007 Progress Repor
Page 34 and 35: Fusion Programmedifference between
Page 36 and 37: Fusion ProgrammeIntroductionThe suc
Page 38 and 39: Fusion ProgrammeMinority ions, acce
Page 40 and 41: Fusion ProgrammeThe cryostat overal
Page 42 and 43: Fusion ProgrammeIntroductionThe tec
Page 44 and 45: Fusion ProgrammeThe main results so
Page 46 and 47: Fusion ProgrammeInfrared absorption
Page 48 and 49: Fusion ProgrammeFig. 3.8 - Frascati
Page 50 and 51: Fusion ProgrammeThe second year of
Page 52 and 53: 250Fusion Programmeflow-rate in the
Page 54 and 55: Fusion ProgrammeThe aim of the work
Page 56 and 57: Fusion ProgrammeFig. 3.21 - X-ray s
Page 58 and 59: Fusion ProgrammeRange (mm)593583573
Page 60 and 61: Fusion ProgrammeZ (m)6420-2-4-6sour
Page 62 and 63: Fusion Programmea) b)c)Fig. 3.31 -
Page 64 and 65: Fusion Programmeactivation. Eight r
Page 66 and 67: Fusion Programme1×10 -6Tensile cre
Page 70 and 71: Fusion Programmelubricants cannot b
Page 72 and 73: Fusion ProgrammeTritium roomTritium
Page 74 and 75: Fusion ProgrammeImplications for PS
Page 76 and 77: Fusion ProgrammeThe development and
Page 78 and 79: Fusion ProgrammeIntroductionDuring
Page 80 and 81: Fusion Programme19.5Section view B-
Page 82 and 83: Fusion Programmeresults and particu
Page 84 and 85: Fusion ProgrammeFollowing the exten
Page 86 and 87: Fusion Programme4.7 Characterisatio
Page 88 and 89: Fusion ProgrammeMagnetic moment (em
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Page 94 and 95: Fusion ProgrammeLoad (mN)0.80.60.40
Page 96 and 97: Fusion Programme5.1 Outline and Ove
Page 98 and 99: Fusion Programme(λ D /Δ 0 ) 2Δ 0
Page 101 and 102: 5. Inertial Fusion2007 Progress Rep
Page 103 and 104: 6. Communication and Relationswith
Page 105 and 106: 7. Publications and Events - Fusion
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Page 116 and 117: Fission Technology8.1 Advanced and
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Fission TechnologyAcceleration m/s
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Fission Technology232.73 mm (17 pin
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Fission TechnologyThe Very High Tem
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Fission Technology500Thermocouple t
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Fission Technology0.16 mm 0.16 mm0.
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Fission Technology-4800-85000.00SGU
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Fission Technologythrough calculati
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Fission Technology1.23 e+001.17 e+0
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Fission TechnologyPressure (bar)642
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Fission TechnologyFig. 8.37 - Creep
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Fission TechnologyENEA organised th
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Fission TechnologyTemperature600400
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Fission TechnologyZ(m)1.00.80.60.40
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Fission Technologythat a system is
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Fission TechnologyMaxwellian-averag
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Fission TechnologyBOT3P has large w
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Fission Technology9.1 Boron Neutron
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Fission TechnologyIn collaboration
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Fission Technologyvolume. Thus the
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Fission TechnologyFig. 9.9 - Logger
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Fission TechnologyIn relation to EN
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Fission TechnologyArticles11.1 Publ
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Fission TechnologyArticles incourse
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Fission TechnologyF. ROELOFS, B. DE
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Fission TechnologyE. BERTHOUMIEUX e
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Fission TechnologyInternal reportsR
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Fission TechnologyRTI FPN-P815-008
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PART IIINUCLEAR PROTECTION171
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12. Radioactive Waste Management an
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13. Publications - Nuclear Protecti
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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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