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Nuclear Facilities Decommissioning & Design An introduction to SENAC activities

Nuclear Facilities Decommissioning & Design An introduction to SENAC activities. JM. Dumas. CEA Saclay, DSM/DAPNIA/SENAC, F-91191 Gif-sur-Yvette, France. Bucharest May 2006 jean-michel.dumas@cea.fr. The SENAC activities. Main objectives

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Nuclear Facilities Decommissioning & Design An introduction to SENAC activities

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  1. Nuclear Facilities Decommissioning & Design An introduction to SENAC activities JM. Dumas CEA Saclay, DSM/DAPNIA/SENAC, F-91191 Gif-sur-Yvette, France ridikas@cea.fr Bucharest May 2006 jean-michel.dumas@cea.fr

  2. The SENAC activities Main objectives  to contribute to the design of nuclear facilities (accelerators, reactors, laboratories,…)  to develop methodologies in radioactive waste management and in radiological impact evaluations  to maintain a high level of expertise in decommissioning (experience feedback in dismantling of accelator facilities)  to take part in educational programs (decommissioning & radioactive waste management) ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr Bucharest May 2006 jean-michel.dumas@cea.fr

  3. The SENAC activities • Main applications • design studies for small facilities (ARRONAX cyclotron,…) to large nuclear facilities (ITER, SPIRAL2,...)  biological shielding (adaptation to dose rate limits, application of ALARA method to operate,…),  choice of materials (limitation of radioactive waste produced by activation of components,…)  limitation of release of radioactive gases or particles to environment  nuclear safety & security report to authorities ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr Bucharest May 2006 jean-michel.dumas@cea.fr

  4. The SENAC activities • Main applications • global strategy and studies of decommissioning based on radioactive waste management and radioprotection •  application of nuclear safety authority requirements, •  radioactive waste zoning (nuclear / non nuclear waste), •  radioactive waste characterization and classification •  radioactive waste processing (treatment, conditioning, transport to storage) •  safety of the final state to terminate the nuclear Licensing process (evaluation of the radiological & residual impact) ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr Bucharest May 2006 jean-michel.dumas@cea.fr

  5. Target station design at ARRONAX cyclotron facility From decommissioning to design at DAPNIA/SENAC Beam line dismantling at SATURNE accelerator • ARRONAX cyclotron facility (Nantes) * • SATURNE proton accelerator Emax~3 GeV (Saclay) * • ALS electron accelerator Emax~700 MeV (Saclay) * • RUS research reactor P=100 KW (Strasbourg) * • ULYSSE research reactor P=100 KW (Saclay) * • RAPSODIE research reactor P=40 MW (Cadarache) * → SOPHI positron source (Saclay) * → SPIRAL-2, EURISOL RIB production facilities → SILOE research reactor P=35 MW (Grenoble) → PHENIX power reactor P=250 MW (Marcoule) → CPO proton therapy facility (Orsay) * → LHC & SPS accelerators (CERN) ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  6. Decommissioning of RUS research reactor ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  7. Decommissioning of ULYSSE research reactor ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  8. LA waste VLA waste Conventional waste Decommissioning of RAPSODIE research reactor ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  9. Residual activity of a collimator Activity (Bq/g) Cooling time (days) Residual activity in beam line components at CPO Proton therapy beam line at CPO → Beam collimators Cu 58.7%, Zn 39.2%, Pb 2.1% → Irradiation time 6 minutes with 200 MeV protons → Average mass 7 Kg → Present stock 4.5 tons of irradiated material ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  10. High intensity positron source SOPHI • Shielding calculations for neutrons and photons • Electron beam dump design for low neutron production ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  11. 70 MeV protons sur la cible Design of ARRONAX nuclear facility  Beam-target configuration / radioisotope yield  Neutron transport in biological shielding TR3 TR4 CYCLOTRON EX1 TR2 TR1 TR5 ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  12. Waste zoning of nuclear facilities Application to waste zoning of SATURNE accelerator facility Conventional waste zone Nuclearwaste zone Saturne facility ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

  13. Waste zoning of nuclear facilities Application to waste zoning of ALS linear accelerator facility Conventional waste zone Nuclearwaste zone ALS facility ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr

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