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Team Hot Rod Design Review. Andy Griff , Bill Crane & Jerrod Warner November 15, 2007 JEB 111, Moscow, ID. Background. Idaho National Laboratory (INL) Hanford fuel assemblies Hot Cell environment Fuel disassembly Cut hex duct Remove fuel elements Containerize. Problem Statement.
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Team Hot RodDesign Review Andy Griff, Bill Crane & Jerrod Warner November 15, 2007 JEB 111, Moscow, ID
Background • Idaho National Laboratory (INL) • Hanford fuel assemblies • Hot Cell environment • Fuel disassembly • Cut hex duct • Remove fuel elements • Containerize
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.
Task Analysis • Five Tasks • Securing of fuel assembly • Positioning/alignment • Pin removal • Fin removal • Element removal
Pin Removal (Design 1) • Lever Arm • Pros • Mechanical advantage • Simple operation (MSM) • Cons • Pin and linkage alignment • Size
Pin Removal (Design 2) • Screw Punch (Manual/Pneumatic) • Pros • Ease of use (MSM) • Minimizes impact • Size • Cons • Alignment • Visibility
Fin Removal (Design 1) • Gripper Rail System • Pros • Use of rod contour • Range of motion • Cons • Element spacing • Adjacent row alignment • Alternate gripping
Fin Removal (Design 2) • Grip Fin Rail System • Pros • Balanced force • Existing surface area • Not cantilevered • Cons • Rod/Fin integrity • Precise movements (MSM)
Fin Removal (Design 3) • Gripping Element Ends • Pros • Gripping area • Easy access • Cons • Row clearance • Slipping • Fin binding
Element Removal (Design 1) • Waffle Maker • Pros • Elements secured rigidly • Use of existing fin holes • Cons • Element spacing • Positioning elements (weight)
Element Removal (Design 2) • Fin/Element Combination • Pros • Combines processes • Elements held by contour • Cons • Element spacing • Binding
Element Removal (Design 3) • Push Pin • Pros • Only hold one element • Minimal binding moment • Element spacing irrelevant • Cons • Removing push pin • Pin alignment Push Pin Element Holder
Element Removal (Design 4) • Individual Element Removal • Pros • Eliminates steps • Easy motions • Compact size • Cons • Clearance issues • Rod end support
Schedule/Work Plan • Senior 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)
Questions/Ideas (Tom & Jim) • Verify cut location • Pneumatic devices onsite (grippers, motors, etc…) • Table information (dimensions, etc…) • Clearance under sideback • Sideback dimensions • Positioning method/equipment (specific way?) • Fin material strength • Parts from dummy assembly • Positions/Securing ideas?