1. Fp7 - LEADER Slide 1 ALFRED C&S rods mechanical design FA_20121120.ppt Task 2.4 – Mechanical Design & Drawings of LFR and ETDR Fuel Assemblies (mech. Design) F. Manni (S.R.S.) D. Vitale Di Maio (S.R.S.) The LEADER project ALFRED vs. LFR F/A concept ( ALFRED F/A shown ) Layout & Parts Status [Loading/Unloading Machine] [Tungsten cost estimate] TOC LEADER Technical Meeting November 20 - 23, 2012 Karlsruhe Institut of Technology

2. Fp7 - LEADER Slide 2 ALFRED C&S rods mechanical design FA_20121120.ppt ALFRED vs. LFR ALFRED core layoutLFR core layout 171 12 4 108 Fuel Assembly Control Rods Safety Rods Dummy Element 157 + 270 = 427 y x 132 24 295 583 ( × 2.5 ) ( × 1.5 ) ( × 1.2) ( × 2)

3. Fp7 - LEADER Slide 3 ALFRED C&S rods mechanical design FA_20121120.ppt 127 PINS 169 PINS ALFRED core layout ELFR core layout F/A pitch ( +22% ) pin pitch ( +8% ) same pin OD ALFRED vs. LFR

4. Fp7 - LEADER Slide 4 ALFRED C&S rods mechanical design FA_20121120.ppt Drag Ballast Weight Buoyancy ±20% 151 kg 312 kg 386 kg 77 kg Refueling 303 kg 253 kg 50 kg Operation Preloaded Spring Force balance (ALFRED) ±20% UP DOWN Ballast Preloaded Springs Lead Free Level (during refueling) Top Grid Diagrid Concept

5. Fp7 - LEADER Slide 5 ALFRED C&S rods mechanical design FA_20121120.ppt 2770 1060 1370 7900 600 Mixing zone level Lead free level (refueling) 2 4 4 1 1 3 3 2 2 Concept

6. Fp7 - LEADER Slide 6 ALFRED C&S rods mechanical design FA_20121120.ppt SpikeBottom ShroudFunnelUpper Shroud Ballast Head Layout

7. Fp7 - LEADER Slide 7 ALFRED C&S rods mechanical design FA_20121120.ppt Spike Core Funnel Ballast Funnel Core Spike empty sections Layout

8. Fp7 - LEADER Slide 8 ALFRED C&S rods mechanical design FA_20121120.ppt Ø80 Ø154 550 100 1060 100 Ø100 Gagging device could be allocated here Spike

9. Fp7 - LEADER Slide 9 ALFRED C&S rods mechanical design FA_20121120.ppt Pin Support Grid Spacers 460 470 450 600 Lower Shroud

10. Fp7 - LEADER Slide 10 ALFRED C&S rods mechanical design FA_20121120.ppt 1430 (overall length) 600 (60 pellets) 550 10 120 50 20 1330 (cladding) 50 18.4 0.8 Pin

11. Fp7 - LEADER Slide 11 ALFRED C&S rods mechanical design FA_20121120.ppt Support beam Spacer 1.5 Ø4 Pin Support Grid geometry Ø8 Sol. A Sol. B !

12. Fp7 - LEADER Slide 12 ALFRED C&S rods mechanical design FA_20121120.ppt Grid Assembly Rakes Crimped Ring (crimped geometry shown) Locking Pin Pin foot Rake Sol. A Sol. B Pin Support Grid geometry

13. Fp7 - LEADER Slide 13 ALFRED C&S rods mechanical design FA_20121120.ppt Thickness 0.25 mm 1 2 1 Laser or Electron Beam welding (no Spot-welding) Obstruction: 14% Pin Spacer (grid)

14. Fp7 - LEADER Slide 14 ALFRED C&S rods mechanical design FA_20121120.ppt 1 2 Thickness 0.25 mm Pin Spacer (grid)

15. Fp7 - LEADER Slide 15 ALFRED C&S rods mechanical design FA_20121120.ppt “Nose”Probe leads Ø80 Funnel

16. Fp7 - LEADER Slide 16 ALFRED C&S rods mechanical design FA_20121120.ppt Ballast Unit (6.9 kg, Tungsten) 6.9 x 22 = 151 kg Belleville Spring Pack Spacer (top) Head Bottom head Ballast

17. Fp7 - LEADER Slide 17 ALFRED C&S rods mechanical design FA_20121120.ppt Ø100 Ø40 40 Ø30 Head & Spring Press Top grid (lower plate) Belleville washers Reference New

18. Fp7 - LEADER Slide 18 ALFRED C&S rods mechanical design FA_20121120.ppt Type A disposition Type B disposition 1 2 3 4 1 2 3 4 1 3 4 2 Core anti-compaction devices (plaquettes)

19. Fp7 - LEADER Slide 19 ALFRED C&S rods mechanical design FA_20121120.ppt Status LFR & ALFRED F/A mechanical design reports and drawings (some amendments needed) unify F/A and C&S rods press design plaquettes implementation done to do 1 month completion time

20. Fp7 - LEADER Slide 20 ALFRED C&S rods mechanical design FA_20121120.ppt thanks

21. Fp7 - LEADER Slide 21 ALFRED C&S rods mechanical design FA_20121120.ppt Loading-Unloading Machine End Effector

22. Fp7 - LEADER Slide 22 ALFRED C&S rods mechanical design FA_20121120.ppt Loading-Unloading Machine !? F/A Hold-down jig

23. Fp7 - LEADER Slide 23 ALFRED C&S rods mechanical design FA_20121120.ppt Tungsten cost estimate