ICL 26/05/2010 Relocation of electronics at Pt5 Summary of week 22 + roadmap Contributions from GS-SEM, EN-MEF, EN-EL, EN-CV, BE-ASR, TE-MPE, PH-CMX, TE-EPC

UXC55 USC55 Pillar Wall UPX56 Shelter PM56 26/05/20102 UP56 UJ56 UJ561 UJ561?

Proposed CE work: forming a gallery between PM56 shelter and UPX56 → Length ≈ 5 m→Width ≈ 2.3m→Height ≈ 2.3m →Equipment: Hydraulic hammers possibly small excavator →Duration: Excavation + lining ≈ 2 to 3 months →Cost estimate: 0.5MCHF

26/05/20105 Services difficult to relocate Remaining issues to clarify: →What is the best path for the gallery to connect with UJ56 →Modification of metallic staircase →Relocation of services in the way of gallery (CV, EL, ASE...) →Could this be avoided →How to evacuate spoil and ventilate worksite: J Osborne to assess situation and make recommendations →Safety issues: Green light from G Roy & CMS GLIMOS →Access control issues: Installation of a new interlocked blast door + move of existing UJ561 sector door + changes in LACS + update of documentation: Estimated cost to be produced by S Di Luca and CEGELEC

26/05/20107 UJ56 1 st floor 24 racks How many racks need to be relocated and where should they go (USC55 vs UJ561)? List to be put together by M Gastal & JC Guillaume Rack owners will be contacted in turn.

Status so far: 24 racks currently installed 6 racks would stay in the UJ56 11 racks would be relocated

26/05/20109 UJ56 1 st floor Power converters TE-EPC to be contacted to collect feedback on proposal to relocate PCs to UJ561 C Coupat 25/05: Solution proposed is acceptable Space required around equipment for installation and maintenance C Coupat 25/05: 1.4m of space in front of front space

26/05/ UJ56 1 st floor 24 racks + Power converters What power dissipation is to be expected from rack + Pconverters? Guideline for relocation and impact on CV systems G Peon to be contacted by M Gastal

26/05/ UJ56 Gnd Floor How many CV pieces of equipment need to move? G Ducret met on 16:00 PLC for UJ56 and tunnel ventilation Preference for relocation in USC55 “ctrl room area” Switchboard for water pumps “eau brute”, used for fire fighting Preference for relocation on surface

26/05/ Additional shielding: width calculated to be 1m possibly with a 40cm roof shielding

→ Can the slab sustain the additional weight? → Consultant to be commissioned by GS-SEM → Cavern floor is founded directly on rock → Total compression force produced by shielding would only be a very small percentage of what concrete can take. → Could we build a shielding roof of 40cm? From CE point of view YES

26/05/ Additional shielding: → How can the shielding wall be assembled? → No crane available → Do we need to remove cable trays under false floor? → Where should the safe room equipment be stored during erection of the wall? → Do we need to remove the metallic structure of the 1 st floor? → New generations of switchboards to be foreseen

26/05/ New layout of the safe room: → How do we maintain the General Services, safety lights, AUG system during the re-organisation of the safe room? → Could the 48V network be hooked up on CMS? → Should the ventilation system be modified? Y Body to give advice → All pieces of equipment are cooled down by air

26/05/ Increasing the cable tray capacity between UJ56 and UP56 → Insertion of service ducts through coring – 40cmØ & 8m long. → 4000CHF/m → How many will we need? 4 as first approximation → Impact on ventilation and air flows? → Radiation protection implications? Smaller Ø preferred ~25cm Cooled cables Ctrl cables DC Power cables

26/05/ Increasing the cable tray capacity between UJ56 and UP56 → How to resolve the bottle neck in UP56? → New idea: reduce the size of the ventilation duct Cooled cables Ctrl cables DC Power cables

26/05/ Increasing the cable tray capacity between UJ56 and UP56 → How to resolve the bottle neck in UP56? → New idea: reduce the size of the ventilation duct DC Power cables Inject fresh air from USC55

26/05/ Increasing the cable tray capacity between UJ56 and UP56 → Modify t UP56 lining Smoother edge Only very small chamfer possible without affecting the structural stability of the tunnel

26/05/ Optimisation of space occupancy in UP56 → How much equipment can be brought in? → Space budget? → Cooling budget? → PConvs cooled by water → Racks cooled by air → What new CV systems (chilled/mixed water) should be installed?

26/05/ Optimisation of space occupancy in UP56 → How should the ventilation system be modified? → Needed if unified UJ561? → Sections of partition wall could be removed

26/05/ Optimisation of space occupancy in UP56 → How should the ventilation system be modified? → Needed if unified UJ561? → Sections of partition wall could be removed → Fresh air supplied by USC55 and/or UL55 → Extraction through ventilation gallery (new opening) → Sector door to be moved to UP56 → Should we add sector doors to close off the bypass? Access to the modified UJ561 would be more restrictive than the access required for UJ56

Reinforcement steel bars are linked to the crown of the tunnel. Removing the wall might induce rock settlements, cracking. GS-SEM could further investigate using consultant... Openings could still be considered

26/05/ Optimisation of space occupancy in UP56 → Ho w much cable tray capacity can be found if ventilation duct can be spared → How do we handle pieces of equipments during the relocation? → Installation of a fire detection system → On what side should the cable trays to USC55 ctrl room be installed?

26/05/ Link between UJ561 and USC55 control room → What should be the position of the service duct? → What thermal load would be brought on to the USC55? → Water cooling: none → Ventilation?

Underground Ctrl room USC racks (uj56 du 1 er ) → Integration to be studied  Draft 3D model of Mezzanine control room to be prepared for presentation at CMS

Top Of CV room USC /05/2010 Relocation on top of CV room: → What equipment could be brought to this area? → Eg: DYXE01 (DFBX S45) → What space is required to change ventilation filters (EN-CV)?

26/05/ Goals for week 21: Start putting list of racks to be moved from UJ56 together GS-ASE - Jean-Francois Juget – 4 racks to remain in UJ56 – 1 rack to be relocated in USC55 (PP + new cables) TE-MPE - Reiner Denz – 2 racks to be relocated in UJ561 (new cables) EN-STI - Jerome Lendaro – BE-ABP - Helene Mainaud Durand – BE-BI - Enrico Bravin – Get an estimate of the impact on the ventilation capabilities of moving all power converters + 15 racks into the UJ561 Launch the UJ56 slab loading study Start assessing the proposed ventilation scheme for the modified UJ561

R2E relocation scheme at Point 5 Type of equipment:Rack: Other: Equipment owner (group): Rack name: Rack content: Crate(s): Patch panel(s): Other: Constraints: Max Cable length: Proximity to other equipment: Part of a larger infrastructure system: Safety aspects: Other: Candidate location(s) for relocation: Current configuration: Future configuration: Work to be done for implementation: Impact of equipment disconnection: Time estimates for work execution: Cost estimates

Goals for week 22: Putting list of racks to be moved from UJ56 together TE-CRG - Juan Casas-Cubillos 2 racks to move to UJ561 or USC55 ctrl room + 1 rack to stay TE-MPE – Richard Mompo 1 rack to move in USC55 top of CV room IT-CS - Eric Sallaz 14:00 2 racks to move to UJ561 TE-MPE – Bruno Puccio & Markus Zerlauth 15:00 1 rack to move to USC55 top of CV room 1 rack to move to UJ561 BE-CO – Julien Palluel 16:00 1 Rack to move to UJ561 or USC55 ctrl room DGS-RP - Stefan Roesler 14:00 Get constraints on cable length and Ø from GS-ASE Get an estimate of the impact on the ventilation capabilities of moving all power converters + 15 racks into the UJ561 Launch the UJ56 slab loading study: Done Start assessing the proposed ventilation scheme for the modified UJ651

Goals for week 23: Putting list of racks to be moved from UJ56 together BE-BI: E Bravin 14:00 EN-CV: Y Body + G Ducret Get constraints on cable length and Ø from GS-ASE Get an estimate of the impact on the ventilation capabilities of moving all power converters + 15 racks into the UJ561 Start assessing the proposed ventilation scheme for the modified UJ651