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 MeetingNovember 20 - 23, 2012Karlsruhe Institut of Technology

Fp7 - LEADER

Slide 2

ALFRED C&S rods mechanical design

FA_20121120.ppt

ALFRED vs. LFR

ALFRED core layout LFR 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)

Fp7 - LEADER

Slide 3

ALFRED C&S rods mechanical design

FA_20121120.ppt

127 PINS 169 PINS

ALFRED core layout

ELFR core layoutF/A pitch ( +22% )

pin pitch ( +8% )

same pin OD

ALFRED vs. LFR

Fp7 - LEADER

Slide 4

ALFRED C&S rods mechanical design

FA_20121120.ppt

Dra

g

Bal

last

Wei

ght

Buo

yan

cy

±20%

151 kg

312 kg 386 kg

77 kg

Ref

uel

ing

303 kg253 kg

50 kg

Op

erat

ion

Pre

load

ed

Spr

ing

Force balance(ALFRED)

±20%

UPDOWN

Ballast

Preloaded Springs

Lead Free Level (during refueling)

Top Grid

Diagrid

Concept

Fp7 - LEADER

Slide 5

ALFRED C&S rods mechanical design

FA_20121120.ppt

277

0

106

013

70

790

0

600

Mixing zone level

Lead free level (refueling)

2

4

4

1

1

3

32

2

Concept

Fp7 - LEADER

Slide 6

ALFRED C&S rods mechanical design

FA_20121120.ppt

Spike Bottom Shroud Funnel Upper Shroud Ballast

Head

Layout

Fp7 - LEADER

Slide 7

ALFRED C&S rods mechanical design

FA_20121120.ppt

Spike

Core

Funnel

BallastBallast

Funnel

Core

Spike e

mp

ty s

ecti

on

s

Layout

Fp7 - LEADER

Slide 8

ALFRED C&S rods mechanical design

FA_20121120.ppt

Ø80

Ø15

4

550

100

1060

100

Ø10

0

Gagging device could be allocated here

Spike

Fp7 - LEADER

Slide 9

ALFRED C&S rods mechanical design

FA_20121120.ppt

Pin Support Grid

Spacers

460

470

450

600

Lower Shroud

Fp7 - LEADER

Slide 10

ALFRED C&S rods mechanical design

FA_20121120.ppt

1430 (overall length)

600 (60 pellets)

550 10

10

10 120

50 20

1330 (cladding)

5018.4

0.80.8

Pin

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

!

Fp7 - LEADER

Slide 12

ALFRED C&S rods mechanical design

FA_20121120.ppt

Grid Assembly

RakesCrimped Ring(crimped geometry shown)

Locking Pin

Pin foot

Rake

Sol. A Sol. BPin Support Grid geometry

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)

Fp7 - LEADER

Slide 14

ALFRED C&S rods mechanical design

FA_20121120.ppt

1

2

Thickness 0.25 mm

Pin Spacer (grid)

Fp7 - LEADER

Slide 15

ALFRED C&S rods mechanical design

FA_20121120.ppt

“Nose” Probe leads

Ø80

Funnel

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) HeadBottom head

Ballast

Fp7 - LEADER

Slide 17

ALFRED C&S rods mechanical design

FA_20121120.ppt

Ø100Ø40

40

Ø30

Head & Spring Press

Top grid

(lower plate)

Belleville washers

Reference

New

Fp7 - LEADER

Slide 18

ALFRED C&S rods mechanical design

FA_20121120.ppt

Type Adisposition

Type Bdisposition

1

2

3

4

1

2

3

4

1

3

4

2

Core anti-compaction devices (plaquettes)

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

Fp7 - LEADER

Slide 20

ALFRED C&S rods mechanical design

FA_20121120.ppt

thanks

Fp7 - LEADER

Slide 21

ALFRED C&S rods mechanical design

FA_20121120.ppt

Loading-Unloading Machine

End Effector

Fp7 - LEADER

Slide 22

ALFRED C&S rods mechanical design

FA_20121120.ppt

Loading-Unloading Machine

!?

F/A Hold-down jig

Fp7 - LEADER

Slide 23

ALFRED C&S rods mechanical design

FA_20121120.ppt

Tungsten cost estimate

F/A 171 1 171.0 [unit]C&S rods 16 1.2 19.2 [unit]dummies 108 0.2 21.6 [unit]

295 211.8 [unit]

units 211.8 [unit]ballast/unit 150.0 [kg/unit]

ballast (total) 31,770 [kg]31.8 [ton]

kg 31,770 [kg]cost/kg 40 [USD | kg]

cost (total) 1,270,800 [USD]

998,507 [EURO]

[EURO | USD] 1.2727