8 th International Summer School 2016, JRC Ispra on Nuclear Decommissioning and Waste Management

Transcription

1 8 th International Summer School 2016, JRC Ispra on Nuclear Decommissioning and Waste Management Nucleonica: Nuclear Applications for Radioactive Waste Management and Decommissioning cloud based nuclear skills for data creation, sharing, and collaboration Dr. Joseph Magill, Nucleonica GmbH, Karlsruhe

2 Nucleonica: Nuclear Applications for Radioactive Waste Management and Decommissioning Nucleonica Overview Nuclear Data Resources in Nucleonica Nuclear Science Applications & Tools Education & Training with Nucleonica Nucleonica Case Studies From birth to burial: Characterisation of an irradiated fuel sample (UOX) from a PWR Spectrum identification

3 What is Nucleonica? Nucleonica provides you with user friendly access to the latest reference data from internationally evaluated nuclear data. A unique feature is the wide range of validated web-based nuclear science applications for decay calculations, dosimetry & shielding, gamma spectrometry, etc. Support nuclear skills agendas by creating, sharing and disseminating practical tools and developing skills modules. In addition Nucleonica offers a range of introductory and advanced training courses. cloud based nuclear science for data creation, sharing, and collaboration

4 Nucleonica Architecture & Logical Structure Applications Wiki Web page (explicit AND implicit knowledge) Databases (nuclear data) The NUCLEONICA Structure Forum, Blog News, Calendar

5 Nuclear Data Resources in Nucleonica: Nuclide Datasheets++ Main Nucleonica database JEFF3.1 contains decay data on 3852 nuclides. New: ENSDF/B-VII.1

6 Nuclear Data Resources in Nucleonica: Nuclide Datasheets++: New: ENSDF/B-VII.1 User friendly access to internationally evaluated nuclear data

7 Nuclide Search / Radiation Search New

8 Validated Nuclear Science Applications & Tools Radioactive decay calculations with Decay Engine++

9 Validated Nuclear Science Applications & Tools Dosimetry & Shielding++

10 An International Standard: Ambient Dose Equivalent H*(10) Background: The Ambient Dose Equivalent H*(10) is a quantity now widely accepted. In case of photons, it accounts for absorption and scattering of radiation by the human body. The definition of H*(10) simulates the human body through a phantom (the ICRU sphere, a sphere of 300 mm in diameter made of tissue equivalent material). H*(10) is the dose equivalent at a depth of 10 mm inside that sphere, that is at the place of an assumed inner organ. Ambient Dose Equivalent, H*(10) Scattered radiation Scattered radiation Scattered radiation Nucleonica s D&S++ now uses H*(10). The ambient dose rate, H*(10), accounts for both absorption and (back) scattering of the radiation by the human body into the region of interest.

11 Validated Nuclear Science Applications & Tools Range & Stopping Power++

12 Validated Nuclear Science Applications & Tools Virtual Cloud Chamber Electron-positron pairs are created using 10 MeV photons on lead. By switching off energy loss mechanisms, the charged particles are seen to spiral in the applied magnetic field. low energy photons (energy 100 kev) are attenuated with a thick (15 cm) water shield. This combination of low energies and thick shields give rise to multiple scattering of the radiation The red particles (3 MeV positrons) are blocked by a lead shield (green). When the positrons collide with the shield, they combine with electrons (blue) to create gamma radiation (white). Only a few gamma photons pass through the shield material.

13 Fukushima: Gamma spectrum of contamination at the Daiichi plant. Contamination is almost entirely to cesium-137 and cesium -134 Validated Nuclear Science Applications & Tools Gamma Spectrum Generator γ-spectrum simulated for 60 Co 100 kbq source and NaI (3" 3") detector: γ-spectrum simulated for 152 Eu 100 kbq source and HPGe detector.

14 Validated Nuclear Science Applications & Tools webkorigen fuel depletion calculations & neutron activation

15 Validated Nuclear Science Applications & Tools e-ship++: package classification for radioactive transports Joint collaboration between CERN and Nucleonica

16 Motivation for e-ship++: Regulatory Obligations The IAEA Specific Safety Requirements SSR-6 states in paragraph 306 that: A management system { } shall be established and implemented for all activities within the scope of the Regulations, to ensure compliance with the relevant provisions of these Regulations. { } In particular (training), (requirements before each shipment) and 546 (transport documents) enforce the need for a tool to help the shipping service to correctly classify the material. To fulfil these requirements, CERN/Nucleonica have developed e-ship, with the aim of providing a classification of dangerous goods based on the nuclide inventory and material characteristics (special form, physical state, ). Added functionalities: importation of gamma spectrometry results, export to pdf/html, A2/A1 unlisted radionuclides, calculations for radiological reasons (inhalation & ingestion dose, dose rate), decay.

17 Mass Activity Converter Nuclide Mixtures Nucleonica s trump card! Decay Engine++ Gamma Spectrum Generator Dosimetry & Shielding++ e-ship++ Neutron Activation

18 Education & Training with Nucleonica Nucleonica for Smartphones: and Tablet PCs: M-Learning

19 Education & Training with Nucleonica Karlsruhe Nuclide Chart new edition August 2015 Fold-out Chart Wall-Chart Auditorium Chart Nuclide Carpet Roll Chart Karlsruhe Nuclide Chart Online (KNCO) Nuclide carpet 1m x 6.5m

20 Case Study: from birth to burial Characterisation of an irradiated fuel sample (UOX) from a PWR

21 Nucleonica: Nuclear Applications for Radioactive Waste Management and Decommissioning Nucleonica Overview Nuclear Data Resources in Nucleonica Nuclear Science Applications & Tools Education & Training with Nucleonica Nucleonica Case Studies From birth to burial: Characterisation of an irradiated fuel sample (UOX) from a PWR Spectrum identification

22 Case Study: from birth to burial Characterisation of an irradiated fuel sample (UOX) from a PWR A: Calculate the activities of actinide and fission products in the sample (webkorigen) B: Create a nuclide mixture of the 10 nuclides with highest activities (Nuclide Mixtures) C: Estimate the gamma dose rate from this material both unshielded and shielded (Dosimetry & Shielding) D: Generate the gamma spectrum for a HPGe detector (Gamma Spectrum Generator) and identify the main lines. E: Generate a transport report to determine which type of packaging is required to transport this sample (e-ship) F: Use the Decay Engine++ to see how the activity of the sample decreases over 5000 y.

23 1. Open browser and go to 2. Enter your username and password

24 3. You will then enter the Networking page 4. Now go to the Nuclear Science page

25 5. Here are the applications we are going to use

26 Universal Nuclide Chart: formation of actinides in reactor

27 A: Calculate the activities of actinide and fission products in the sample. (webkorigen) 1. Start the webkorigen application 2. Select mode 3: Reactor irradiation and decay 3. Use a fuel mass of 1g. Take a cooling time of 36 years. Otherwise default values 4. Run the application (go to tab 3)

28 5. Select activities of the main nuclides (Total activity is 10.6 GBq) 6. Plot the activities over the 36 y cooling period 7. Check the top 10 activities and create a nuclide mixture based on these nuclides. Rename the nuclide mixture.

29 B: Create a nuclide mixture of the 10 nuclides with highest activities (Nuclide Mixtures) 1. Rename the mixture to 1g UOX spent fuel & save

30 C: Estimate the gamma dose rate from this material both unshielded and shielded (Dosimetry & Shielding)

31 D: Generate the gamma spectrum for a HPGe detector (Gamma Spectrum Generator) and identify the main lines.

32 D: Generate the gamma spectrum for a HPGe detector (Gamma Spectrum Generator) and identify the main lines. Results

33 E: Generate a transport report to determine which type of packaging is required to transport this sample (e-ship++) 1. Start the e-ship application 2. Set the package characteristics (Material, Other form, Solid) 3. Generate the Transport report

34 F: Use the Decay Engine++ to see how the activity of the sample decreases over 5000 y.

35 F: Use the Decay Engine++ to see how the activity of the sample decreases over 5000 y. Activity decreases by factor 100 in 1140 y

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37 Nucleonica: Nuclear Applications for Radioactive Waste Management and Decommissioning Nucleonica Overview Nuclear Data Resources in Nucleonica Nuclear Science Applications & Tools Education & Training with Nucleonica Nucleonica Case Studies From birth to burial: Characterisation of an irradiated fuel sample (UOX) from a PWR Spectrum identification

38 Spectrum identification with WESPA (Web Spectrum analyser)

39 WESPA: An identified spectrum

40 WESPA: Spectrun identification

41 WESPA (Web Spectrum analyser)

42 Training courses on Nucleonica: For more information see our webpage We can also arrange a dedicated Nucleonica training course for your organisation Contact us at: info@nucleonica.com

43 Modelling of -Spectra from Volume / Shielded sources in Nucleonica