Upload
tyrone-lee
View
220
Download
2
Tags:
Embed Size (px)
Citation preview
Team Hot RodDesign Review
Andy Griff, Bill Crane & Jerrod WarnerNovember 15, 2007 JEB 111, Moscow, ID
2
BackgroundIdaho National Laboratory (INL)Hanford fuel assembliesHot Cell environmentFuel disassembly
Cut hex ductRemove fuel elementsContainerize
3
Problem Statement
Design, build, and test a device for use in a “hot cell” environment that
is capable of separating 169 fuel elements from a hexagonal grid plate
assembly.
5
Task AnalysisFive Tasks
Securing of fuel assemblyPositioning/alignmentPin removalFin removalElement removal
6
Pin Removal (Design 1)Lever ArmPros
Mechanical advantage
Simple operation (MSM)
ConsPin and linkage
alignmentSize
7
Pin Removal (Design 2)Screw Punch
(Manual/Pneumatic)
ProsEase of use (MSM)Minimizes impactSize
ConsAlignmentVisibility
8
Fin Removal (Design 1)Gripper Rail SystemPros
Use of rod contourRange of motion
ConsElement spacingAdjacent row
alignmentAlternate gripping
9
Fin Removal (Design 2)Grip Fin Rail SystemPros
Balanced forceExisting surface
areaNot cantilevered
ConsRod/Fin integrityPrecise movements
(MSM)
10
Fin Removal (Design 3)Gripping Element
EndsPros
Gripping areaEasy access
ConsRow clearanceSlippingFin binding
11
Element Removal (Design 1)Waffle MakerPros
Elements secured rigidly
Use of existing fin holes
ConsElement spacingPositioning
elements (weight)
12
Element Removal (Design 2)Fin/Element
CombinationPros
Combines processesElements held by
contourCons
Element spacingBinding
13
Element Removal (Design 3)Push PinPros
Only hold one element
Minimal binding moment
Element spacing irrelevant
ConsRemoving push pinPin alignment
Element Holder
Push Pin
14
Element Removal (Design 4)Individual Element
RemovalPros
Eliminates stepsEasy motionsCompact size
ConsClearance issuesRod end support
15
Axiomatic DesignFR 0 Remove Fuel Elements DP a Punch/Gripper/Holder
FR 1 Remove Grid Plate Pins DP a Punch rod
FR 1.1 Align on pin holes DP 1.1a Set Screw/Slider
FR 1.2 Brace for removal DP 1.2a Pneamatic clamp on hex head
FR 1.3 Push/Pull pins DP 1.3a Punch
1 Lever Arm
2 Threaded/Pneumatic (MS manipulator)
FR 2 Remove Grid Plate Fins DP 2a Element gripper/rail
FR 2.1 Align on fins or hex duct DP 2.1a Slider on gripper
FR 2.2 Brace for removal DP 2.2a Rail System
FR 2.3 Grip fins/elements DP 2.3a Gripper
1 Element contour follower
2 Grip Fin 3 Ends of elements
FR 2.4Pull/Slide fins away from hex head DP 2.4a Threads on linear slider-rail
1 Fin/Element Combination
FR 3Remove Fuel Elements from Fins
DP 3a Holder
FR 3.1 Align on fins/elements DP 3.1a master/slave manipulation
FR 3.2 Brace for removal DP 3.2a Holder mechanism
1 Wafflemaker
2 Contour follower on element end
FR 3.3 Push/Pull elements DP 3.3a Slider
1 Fin slider using existing holes
2 Push Pin
16
Schedule/Work PlanSenior Snapshot (Nov. 30th)Final Design Chosen (Dec. 5th)Semester Report (Dec. 7th)Detailed Design (Jan. 9th-Feb. 15th)Build Prototype (Feb. 15th-Mar. 28th)Prototype Testing (Mar. 28th-Apr. 11th)INL Presentation (Apr. ???)Engineering Expo (Apr. 25th)