ProtoDUNE Assembly Sequence and Access Issues William Miller - - PowerPoint PPT Presentation

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ProtoDUNE Assembly Sequence and Access Issues William Miller - - PowerPoint PPT Presentation

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ProtoDUNE Assembly Sequence and Access Issues William Miller University of Minnesota Nov. 5th 2016 proto Access needed for ProtoDUNE Access is required both inside the cryostat and outside in the cleanroom during pre-assembly Goal

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ProtoDUNE Assembly Sequence and Access Issues

William Miller University of Minnesota

  • Nov. 5th 2016
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Access needed for ProtoDUNE

  • Access is required both inside the

cryostat and outside in the cleanroom during pre-assembly

  • Goal is to maximize work in the

cleanroom area where access is simplified

  • We are constrained by a TCO

(Temporary Construction Opening) that is 1.2m wide and ~7m tall for ¾

  • f the installation
  • During the final phase of installation
  • f the TPC all remaining access

devices must be removed by a 710 (29”) manhole, scaffolding must be tubular/clamp design

ProtoDUNE NP04 (single phase) Warm Structure

Nov 5, 2016 William Miller 2

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Access in the Cleanroom Area

SAS

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Access in the Cleanroom Area

  • TPC materials will be lowered via crane through the roof of the SAS

shown in the plan view on slide 3. Materials will be lowered via crane for access in the 8m x 13m clean room. A scissor lift can be used to transfer the load from the crane to the dedicated rail system shown on slide 5. Other items can be placed on a cart and wheeled in the double doors.

  • Scissor lifts can used through out the clean room for the majority of the
  • work. The highest required working platform elevation for access

needed for installing the cold electronics, transferring load to rail system, etc. is ~8m (26 feet) and they should be large enough to hold 2 people plus some equipment (200kg?)

  • We will need a minimum of 2 scissor lifts ~ plus some lower height

rolling 1-2m tall work platforms

  • We will need several sized rolling carts, smaller ones for tools and

parts, at least one large one for the field cages 4m x 2.5m rated for 1000kg

Nov 5, 2016 William Miller 4

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Access in the Cleanroom Area

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Cleanroom rail transport system

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SAS

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The TPC Model-6m Tall x 7.2m x 7.2m

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End wall field cage modules Top field cage modules with ground plane Calibration laser (4 total) HV feedthrough APAs CPAs Bottom field cage modules with ground plane Detector Support Structure

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Scaffolding Maximum Size Limit

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2.5m 6.0m 2.5m 2.0m Side view-length 2.5m clearance 485mm Height 6m, must be able to adjust height Plan View-width 2.0m clearance 313mm Length 2.5m clearance 485mm

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DSS-Detector Support System

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The 3 two piece Runway Beams are installed first in the cryostat and attached to the support rod with a connection clevis. Access via 2m x 2.5m x 6m scaffolding

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DSS-Trolley and Bridge Beam

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Using a small electric hoist, the 5 bridge beams are lifted into position and connected to the single trolley system. These are stainless with non-lubricated bushings. 2m x 2.5m x 6m scaffolding will be needed for reach each of these 15 connections.

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Cryogenic Piping Manifolds

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Once the Detector Support Structure is completed the Cryogenic Piping is installed. Some of the manifolds are heavy, we may be able to use the DSS to help lift in place,

  • therwise the will be lifted via tripod/hoist from the top of the warm structure.

Scaffolding access will be needed to connect manifolds to the hanger brackets

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APA Sequence

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  • Each APA requires access via scissor lift

to install and test the Photon Detectors and cabling

  • It then is moved to a different location on

front of the Cold Box where it’s cold electronics are installed and is then tested in the Cold Box

  • Once all 3 APAs have completed their

testing they are joined together in front of the TCO and rolled into the Cryostat on Beam A

  • Once the APAs are in their final position

scaffolding is set up by APA 1 to route the cables to the feed-thru then continue with APA 2 and 3. The scaffolding will have to be moved at least once to reach all 3 feed-thru’s

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End Wall

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  • Beam B with End Wall 4 & 5 on it

can be moved into position using the spreader bar, swivel and trolley.

  • The end walls can not be mounted

until installation of Beam C with the complete set of CPA/FC

  • EW4 and 5 are hung on Beam A & C

Access via 2m x 2.5m x6m scaffolding will need to be moved for each End Wall, difficult reach to center mount

Scaffold

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FC mounting to CPA-Clean Room

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  • First in the cleanroom in the CPA assembly area

shown on page 3 after a “pair” of CPAs are joined via threaded rod and spacer, the field shaping strips are mounted and all electrical connections are completed.

  • QC is then completed on the CPA
  • The two top field cages are mounted first to the two

hinges located at the top of the CPA “Pair”.

  • The two bottom field cages are added using a off

center lifting attachment to give the correct angle.

  • The bottom FC is attached to the top FC on each

side then this pair is completed

  • Access is via scissor lift.
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Field Cage Deployment:FC9-FC10

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Scaffold 2m x 2.5m

Scaffolding is set up in the TPC to deploy the first set of Field cages

FC9 is lowered and FC10 is raised using pulley/hoist mounted on Beam B

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Field Cage Deployment:FC11-FC12

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Scaffold 2m x 2.5m

Scaffolding is set up in the TPC to deploy the first set of Field cages

FC11 is lowered and FC12 is raised using pulley/hoist mounted on Beam B

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Field Cage Deployment:FC13-FC14

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  • Deployment of FC 13/14 are

the most difficult and this step is repeated again on FC18/19

  • The scaffolding can only be

750 wide for access needed to engage latches and make final electrical connections

Scaffold

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North Drift EW and TCO

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  • Before deployment of the North Drift

Endwalls and FC the TCO needs to be welded shut

  • This will require all insulation blocks

and needed welding equipment to be stored in North Drift Area. It is likely we can move Beam B to the north and use the End Walls to help protect the APAs and allow better access to the manholes

  • Once TCO is closed End Wall and FC

deployment can be done in the same sequence as the South Drift

  • All final installation steps are

performed in a confined space environment with access via tripod with man-lift for manhole

710mm Manhole Access

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Final Steps to closing Cryostat

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  • Once FC19 is deployed and

final connections are made, access door openings in End Wall 5 and 23 are closed up

  • All scaffolding, tools and

personnel are then lifted up thru manhole

Scaffold

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Access Equipment Summary

  • Clean Room
  • Two 8m (26’) scissor lifts similar to Ash

River JLG-2630ES

  • Several miscellaneous height rolling step

work platforms 1-3m

  • One large rolling cart-4mx2.5m 1000kg
  • Cryostat
  • ~2m W x 2.5m L x 6m H scaffold system.

It needs to be of a tubular design so it can fit out manhole

  • ~.75m W x 2.5m L x 6m H for use outside

the TCO

  • Tripod with man-lift capability above

manhole to lower/raise personnel once TCO is closed

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