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MONITORING MEETING

MONITORING MEETING. EFDA Technology Workprogramme 2005 Activities 2005-2006 Field: Safety and Environment Task Area: Waste Management TW5-TSW-001. Mol, June 27 th , 2006: L. Ooms, S. Leblanc. MONITORING MEETING.

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MONITORING MEETING

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  1. MONITORING MEETING EFDA Technology Workprogramme 2005 Activities 2005-2006 Field: Safety and Environment Task Area: Waste Management TW5-TSW-001 Mol, June 27th, 2006: L. Ooms, S. Leblanc

  2. MONITORING MEETING Deliverable 2: Define the activity limits for the dismantling, melting, fabrication or reuse and waste. Deliverable 7: Define the categories of materials based on the different paths in the material cycle of a fusion reactor. Deliverable 8a: Define the R&D needs.

  3. Dose rate Operator: 20mSv/yPublic: 10µSv/yTransport: 2 mSv/h (contact); 0,1 mSv/h (at 2m) Del. 2: Activity limits Actual Limits Melting facilities 200 Bq/g (average) Fusion classification

  4. Del. 2: Activity limits Recycling of fusion materials 1µSv/h 10 µSv/h 2 mSv/h 10 mSv/h 20 mSv/h Hands On Recycling Remote Handling Recycling

  5. Del. 2: Activity limits Case study of defined limits for HOR Melting facilities → 1000 Bq/g ► 4 µSv/h ► 6.4 mSv/y Other Doc’s → 10 µSv/h► 16 mSv/y (1600 h, full exposure) Simulation 10% exposure ► 125 µSv/h as limit value! Full exposure = 8 hours a day, 200 working days a year

  6. Del. 2: Activity limits Remote Handling Facilities Activation analyses (PPCS Model AB) → maximum dose rates up to 1.2 E4 Sv/h (10 days decay) • Hot cell facilities at SCK•CEN: • Laboratory for Low and High Activities • Hot cell BR2 • Building for Vitrified waste at Belgoprocess • → dose rates up to 1.4 E4 Sv/h.

  7. Del. 2: Activity limits 20 mSv/h 1µSv/h 100 µSv/h OR

  8. Del. 2: Activity limits Conclusions: The limits defined in the past can be increased for HOR.Since facilities exist for remote handling of high active materials the limit for RHR is higher than the dose rate of the fusion materials. Draft report ► beginning of July

  9. MONITORING MEETING Deliverable 2: Define the activity limits for the dismantling, melting, fabrication or reuse and waste. Deliverable 7: Define the categories of materials based on the different paths in the material cycle of a fusion reactor. Deliverable 8a: Define the R&D needs.

  10. Del. 7: Material paths Materials used in the different plant models

  11. Del. 7: Material paths

  12. Del. 7: Material paths Model AB: same excercise to be performed Model AB: W and W-alloy

  13. Del. 7: Material paths • Wet storage for 5 years, dust removal • Interim Storage for 100 years • Other strategies … Divertor: 2,5 y Blanket: 5 y HTS: 5 y Replacement Scheme Decay storage Sort & Separate LiPb: 40 kton Eurofer: 10 kton 316SS: 40 kton Coil: 8 kton Melting Recycle Others Dose rate levels?

  14. Del. 7: Material paths To do: • Perform the exercise for Model AB • Make material paths visible (scheme) • Influence of recycling strategy on the material paths • Identify R&D

  15. MONITORING MEETING Deliverable 2: Define the activity limits for the dismantling, melting, fabrication or reuse and waste. Deliverable 7: Define the categories of materials based on the different paths in the material cycle of a fusion reactor. Deliverable 8a: Define the R&D needs.

  16. Del. 8: R&D Special bonding techniques Remote processes Separation Melting, remote process Other techniques, for “exotic materials” like W, SiC/SiC, WC, W-alloy Influence of impurities Recycling

  17. Del. 8: R&D Remote process Remote testing Storage and reuse Build up of activation products Influence on material properties when using recycled material. Influence of impurities. Fabrication General issues Tritium removal, capture… Secondary waste issue

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