Post on 23-Dec-2015
ZDC Remote Handling System
March 10, 2011
Project Status and Forward Planning
Technical Implementation Group Meeting
Paul Debbins
University of Iowa
Model Crane Installed on (-) TAN
Crane installation and testing underground at Pt5
- Provided a method to validate all geometric considerations
- Provided practice in assembly and handling of system underground * Generate a sequence of assembly/operation steps with associated times and positions for CERN Transport and RadioProtection groups.
Crane in Standby condition, parking position when not in use
Position shown is past full movement
Crane in stages of operational movement, withAttached representative payload
Payload
Hard Clearances
Vertical to ceiling services
R(-)
L(+)
Min. Payload - TAN (transport side)
Min. Actuator – TAN (QRL side)
Actuator spindle protectiontube clearance to tunnelwall services – plenty, incl.anti-runout device extra lengthof tube. No collision with QRLplatform.
No collisons to hard artifacts of Tunnel and TAN.
Measured clearances in excellent agreement with Virtual Models – confidence in the manual survey and its translation in to CAD
L(+) side vertical clearance was most critical. Model validates several cm availablespace to expand vertical clearances in system – esp. min vertical space to BRAN
Soft Clearances
1. Interference with rotary jack interconnect input drive axle. Discussed with E. Bravin. Simple to move gas hose.
2. No interference of crane with cable trays on either side.
3. ZDC cabling is to be re-done, to use single multi-contact connectors for all signals, HV, and Laser. This substantially reduces the time spent (un)cabling during operations (ALARA). Eliminates the good probability of mis-cabling, and
reroutes the cables into clean pathways clear of crane and human movements in the area.
1Rotary Jack input drive coupling axle
BRAN Vert. Clearance
Vertical clearance to BRAN: crane carrier beamFully raised, 625mm clearance, 615mm verticalCarrier travel to lowest pos + 10mm clearance Above beam => “0” clearance to BRAN survey ball
Model testing allows to provide for 20mm additionalClearance. Crane Design modified to provide Additional BRAN overhead clearance.
Survey balls are removable and also provide Useful fixation points for attachment to crane forBRAN lifting. Discussed this option with E. Bravin BRAN survey points
BRAN group must provide engineering to design and implement a fixture attaching the BRAN to the crane for BRAN removal. This is NOT a Univ. of Iowa responsibility.
BRAN mounting in slot is also in need of remedy – BRANS are placed in different locations in the slot. 1 BRAN is keyed intoLocating holes in TAN, the other is ‘free – floating’. Both units need to be keyed at consistent locations, with proper clearancesTo adjacent elements (ZDC) when mounted in TAN
Crane Model Testing - - - > Allows final commitment to geometry With increased Vertical Clearances
Some Structure Design modifications – DONE
Modified designs sent to welding fabricators for Comments/mods to suit their best practices - DONE
Final Geometry allows exact commitmentTo actuator specifications
- Actuator specs sent to supplier to generate a current order then Referred to KU and ordered.
~ 1 week
Crane Production Readiness
Crane model ported toSimulation / Analysis environmentTo allow Force determination and FEA analysis of complete model 50% complete
Generate Mechanical Study of Safety
Order Steel Structure Fabrication~ 2 Weeks
Additional preparation for testing
Sarcophagus Design - DONE- Need to send to KU for production- 1 Sarco needed for testing
Construction of Testing Platform
Where? Pt5? Pawel, CMS TC
How ? Design concepts exist- Need to discuss and refine
“BARS” payload (S.Steel abosrber)- Design DONE- Send to A.L Perrot for referral to CERN shops for fabrication
Above Ground Testing of System
- Begin July 2011
Payload
Sarco
Platform
Crane