Mu2e Remote Handling Shield Door, Air Seal, and Transfer Cart Design Status Dave Pushka Mu2e Target, Remote Handling, and Heat & Radiation Shield Review November 16-18, 2015
Items Addressed in this Talk: • Shield Door between the Remote Handling Room and the PS enclosure. • Air Seal between the Remote Handling Room and the PS enclosure. – Air Seal is part of the shield door assembly. • Transport Cart Used to Move the Modules into and out of the Remote Handling Room and the PS enclosure 2 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Second Draft of Requirements for the Mu2e Remote Handling Room Shield Door and Air Seal 1. Cover an opening 19 feet wide, 13 feet tall, with at least a 6 inch overlap on the top and both sides when closed. 2. Provide shielding equivalent to 2 feet of conventional concrete (150 pound per cubic foot density) 3. Conform to the room and opening geometry as described in Mu2e document 5490v-2 (the In-progress Rev 6 drawings). 4. Open or close Shield Door (not air seal) in less than 10 minutes 5. Air seal to be replaceable within one 8 hour shift (Sealing door time < ½ hour) 6. Provide sealing against airflow between the remote handling room and the PS room when closed. Permissible Air leak rate is 130 cfm (this is estimated to be a 1/32 inch wide gap all the way around the door. Static differential is 0.1 inch water column. Leakage budget for the entire room is 310 cfm. (note – air seal does not need to be perfect) 7. Air seal on the remote handling room side to facilitate replacement when door is closed. 8. Meet the international building code seismic requirements for the Fermilab site. 9. Locate as much of the moving apparatus on the remote handling room side of the door as is possible. 10. Provide loads to the building due to the door to Tom Lackowski, building will be designed to accommodate the shielding door loads. 11. Door will be installed after beneficial occupancy. 12. Building dimensions may preclude bringing the entire door in as a single piece. Door may need to be assembled in place from smaller components. 13. Door to accommodate the remote handling cable conveyer system. 14. Door to accommodate vacuum pump required space. 15. Limit loading to the floor to 1400 psi from the door or from members supporting the door weight. 3 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Isometric View of Shield Door and Air Seal Assembly from inside PS room: Shielding Door is a 24 inch thick concrete block shown in Gray. Shielding Door Moves on an aluminum cart, shown in purple. Air Seal included a fixed side (shown in Pink) and a moveable side (moves with the shield door) shown in Blue From the RH room Side 4 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Shield Door Cart (Air Seal Omitted in this Slide for Clarity) Door Weight Sits on Floor When Not being moved Commercial Hydraulic Cylinders are Lift the Concrete when Door is moved Shield Door Moves on Commercially Available Crane Truck Wheels Floor Mounted Rails support the Crane Trucks From RH Room Side 5 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Shield Door Motion • A single Speed Crane wheel drive is used to move the door. • Door Translates at 20 feet per minute. • Takes about 1 minute to open or close. • Will Use a simple two button pendant controller to operate. • Drive Motor to be mounted on end, near the vacuum pumps. • A festoon (not yet in the NX model) will provide power to the door cart. • Hard Stop to limit transverse motion in both directions (not shown in NX model yet). 6 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Shield Door Cart Drive: Gear Motor Used to drive the cart (vacuum pumps and everything else hidden in this image): 7 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Shield Door Overlap and Vacuum Pump Clearance: Overlap between shield door and the building concrete door jam 8 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Air Seal (Fixed Portion Attached to the Building Concrete) • Pink Element is 6 x 6 x ½ “ Aluminum Angle Bolted to the building to provide a smooth, planer surface for the elastomeric seal to press against. • Considering Closed Cell LDPE as the seal elastomer 9 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Air Seal (Mounted on the shield Door Cart) • Aluminum Angle (6 x 6 x ½” ) Picture Frame with sheet aluminum skin and aluminum box section stiffeners. • Picture Frame mates with the same frame shown on previous slide. • Mounted to the Shield Door Cart (which is omitted in this image) 10 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Door Un-Sealed, Side View • Pink is a 6 x 6 angle frame bolted to concrete (in green) and fixed in place. • Light Blue is the moveable seal frame, also a 6 x 6 aluminum angle. • Dark Blue is a vertical adjustment mechanism • Gray is the shield Door. • Note Small Space between Picture Frames • Space above rail 11 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Door Sealed: • Light Blue Frame moves vertically and horizontally on the gray pivot links. • Moveable seal presses against vertical surface of the fixed seal. • 0.1 inch w.c. provides .25 # / linear inch seal compression. • 4-bar linkage of 2100# applies 3.75 # / linear inch seal compression at 45 degrees. 12 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Seal Engagement Mechanism (Concrete Shield Hidden in this image: Green bracket supports two pulleys used to lift moveable portion of seal and allow it to clear rail and fixed seal surface, prior to moving door. Dark blue allows vertical adjustment of assembly to allow moveable seal to sit on rail surface when also bearing against the fixed seal. 13 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Detail of Adjustment Mechanism: Wire rope (in dark gray) lifts moveable seal assembly when the door is moved. A simple threaded rod in tension is used to lift the blue member (to which the moveable seal assembly is attached) up and down to get the right contact to the rail on the bottom of the seal assembly. This should be a ‘one-time’ adjustment. 14 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Detail of Bottom Corner of the Air Seal: • Bottom of Moveable Seal Picture Frame rests on the same rail the door cart rides on. • This gives a flat, smooth sealing surface for the bottom of the seal. • Will need to fill in the ‘corners’ between the fixed seal and the rail with a small horizontal seal 15 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Second Draft of Requirements for the Mu2e Remote Handling Transfer Cart: 1. Fit thru an opening 12 feet wide, 11 feet tall (this does not use the entire width or height of the shielding door to allow room for people or other equipment which is as of yet undefined. 2. Move into the Production Solenoid (PS) room or out of the PS room and into the remote handling room (RH) in less than 10 minutes 3. Carry the weight of a target coffin which is 40,000 pounds 4. Carry the weight of the remote handling modules which is 10,000 pounds 5. Total Load on the transfer cart is less than 50,000 pounds. 6. Limit loading to the floor to 1400 psi. 7. Provide a platform for the remote handling module which is located at an elevation of 32 inches above the floor. 8. Locate to within 5 cm of the PS centerline (10 cm error band). 9. Locate to within 5 of the PS End Cap Flange plane (0 to 5 cm error band). 10. Ride of the surface of the PS and RH room concrete floors or on rails as deemed best by the design 11. Concrete floor elevation should be assumed to be accurate to only +/- 1 inch 12. Concrete floor surface is assumed dry, smooth but not sealed concrete 13. Local floor surface deviation from a plane is +/- 5 mm. 14. Activation issues favor fabrication of the transport cart from aluminum as much as is practical. Studies to quantify are under way. 15. Lift the remote handing modules and lower onto the kinematic mounts. 16 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Transfer Cart: • 10,000 pound capacity • Pneumatic cylinder to lift remote handling modules. • Does not lift casks • Aluminum construction • Four Commercial crane wheels for travel. • Commercial crane drive on two wheels to provide travel motion. • Rides on surface mounted Rails, which may be stainless or carbon steel 17 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
Transfer Cart Motion • A single Speed Crane wheel drive is used to move the cart. • Cart Translates at 15 feet per minute; takes about 90 seconds to move. • Hard stop will provide transverse location alignment with PS. • Will Use a simple two button pendant controller to operate. • Drive Motor to be mounted on Remote Handling Room end. • Multiple means exist to provide power to drive. • Contactors / controls mounted in Remote Handling room. 18 Dave Pushka | Shield Door, Air Seal, and Transfer Cart Design Nov 16-18, 2015
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