Fp7 - LEADER Slide 1 ALFRED C&S rods mechanical design FA_ 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 , 2012 Karlsruhe Institut of Technology

Fp7 - LEADER Slide 2 ALFRED C&S rods mechanical design FA_ ppt ALFRED vs. LFR ALFRED core layoutLFR core layout Fuel Assembly Control Rods Safety Rods Dummy Element = 427 y x ( × 2.5 ) ( × 1.5 ) ( × 1.2) ( × 2)

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

Fp7 - LEADER Slide 4 ALFRED C&S rods mechanical design FA_ 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

Fp7 - LEADER Slide 5 ALFRED C&S rods mechanical design FA_ ppt Mixing zone level Lead free level (refueling) Concept

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

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

Fp7 - LEADER Slide 8 ALFRED C&S rods mechanical design FA_ ppt Ø80 Ø Ø100 Gagging device could be allocated here Spike

Fp7 - LEADER Slide 9 ALFRED C&S rods mechanical design FA_ ppt Pin Support Grid Spacers Lower Shroud

Fp7 - LEADER Slide 10 ALFRED C&S rods mechanical design FA_ ppt 1430 (overall length) 600 (60 pellets) (cladding) Pin

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

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

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

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

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

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

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

Fp7 - LEADER Slide 18 ALFRED C&S rods mechanical design FA_ ppt Type A disposition Type B disposition Core anti-compaction devices (plaquettes)

Fp7 - LEADER Slide 19 ALFRED C&S rods mechanical design FA_ 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

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

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

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

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