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Nuclear Facilities Decommissioning & Design An introduction to SENAC activities JM. Dumas CEA Saclay, DSM/DAPNIA/SENAC, F-91191 Gif-sur-Yvette,

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Presentation on theme: "Nuclear Facilities Decommissioning & Design An introduction to SENAC activities JM. Dumas CEA Saclay, DSM/DAPNIA/SENAC, F-91191 Gif-sur-Yvette,"— Presentation transcript:

1 ridikas@cea.fr 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

2 ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr 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) Bucharest May 2006 jean-michel.dumas@cea.fr The SENAC activities

3 ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr 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 Bucharest May 2006 jean-michel.dumas@cea.fr The SENAC activities

4 ridikas@cea.fr Vilnius 07-11 Nov 2005 blideanu@cea.fr 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) Bucharest May 2006 jean-michel.dumas@cea.fr The SENAC activities

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

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

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

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

9 ridikas@cea.fr Bucharest May 2005 jmdumas@dapnia.cea.fr 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 Residual activity of a collimator Cooling time (days) Activity (Bq/g)

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

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

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

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

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