Jean-Philippe Tock (TE-MSC) On behalf of the SMACC project

 Activities since last LSC (28/02/2014)  Arc splices installation By Activities By sectors  SIT  DFBA  Dashboards  Specials  Update on overheated splices  End of project issue  Activities for the next 2 weeks  Conclusions

JPh Tock 4/29  Sector 56 :  Final leak test and reconnection of DFBAK  Sector 67 :  Complete interventions on NC, reclose insulation vacuum  Sector 78  Work on NC,  Reconnection of DFBAO-SHM  Sector 81 (Priority)  Progress on insulation vacuum leak test  Sector 12  Complete last IC (#1)  Progress on closure of ICs  Sector 23  Progress on the installation of electrical insulation  Complete Q diodes consolidation  Complete M line rewelding (but NCs)  Sector 34  Complete installation of electrical insulation  Work on overheated splices  Start consolidation of Q diodes  Sector 45  Complete resoldering of splices  Progress on installation of shunts SMACC Main activities for the last 2 weeks  >98 % done  All shunts are installed   > 95% rewelded   Resoldering completed    DFBAK SHM reconnection on-going [Splices are resoldered], > 98% reclosed, 12/14 vac subsectors leak tested Leaks on K hoses repaired, > ½ is finally LT > 40% done  From last LSC ( ) DFBAK SHM reconnection on-going [Splices are resoldered], Only the last subesector remains to be leak tested Completed   > 90% injected and controlled > 75% reclosed   >95 % of the shunts are installed Interventions completed, ICs to be reclosed then final LT  1 out of 4 repaired, on-going

JPh Tock 5/29 SEQUENCE AND STATUS OK to open Open ICs Install DN200 Open M sleeves ElQC (old splices) Undo / Redo splicesElQC (new splices) Machine Cu > 7.9 sectors ElQC after Cu mach. > 7.9 sectors Install shunts ≈ 7.9 sectors ElQC after shunt ≈ 7.9 sectors Insulate splices ≈ 7 sectors Weld M ≈ 6 sectors Leak test M ≈ 5.5 sectors Close IC > 4.5 sectors Final LT ≈ 3.5 sectors Consolidate Q diodes ≈ 6.5 sectors Cancelled Completed Non-conformities (Before P Test) Non-conformities (After P Test) 1 completed ≈ 3.5 sec-eq Almost completed in 1 st sector (67) Completed

JPh Tock 6/29 SMACC Progress report by activity Courtesy H Prin  Resoldering: Completed for the whole LHC  Some desoldering/resoldering will be necessary because of NC Degradation after Cu machining, non-conformities,…  Competence and minimum capacity will be kept up to the end of the project

JPh Tock 7/29 SMACC Progress report by activity  Cu machining completed in > 7.9 sectors-eq Completed in 3 sectors Only 11 remaining, mostly linked to overheated splices and DFBA SHM reconnection Courtesy MDumas

JPh Tock 8/29 SMACC Progress report by activity  Shunts are installed in ≈ 7.9 sectors-eq 2 weeks ahead of schedule Saturation effect is seen Completed in 3 sectors (67, 81, 12) Only 16 ICs remains in the whole LHC (≈1%) Shunt weekly installation rate (4 weeks sliding average) *Estimate for W11 Courtesy H Prin

JPh Tock 9/29 SMACC Progress report by activity  Insulation box: Installed in > 6.5 sectors equivalent Courtesy H Prin / G Maury On the baseline  > 3 weeks buffer wrt welding  Only 8 ICs left in 6 first sectors (<1 %)  but it was 12 ICs 2 weeks ago  Issue with some tooling components (mixer), should be solved next week  A fall back solution exists (4 weeks sliding average) *Estimate for W8

JPh Tock 10/29 SMACC Progress report by activity  Consolidation of Q Diodes: in ≈ 6.5 sectors equivalent  Detailed schedule worked out  Should not interfere with welding activities  NC of un~/badly coated BB  Already decided to “use as is” if on magnet side  Decision extended to diode side [Diodes WG ] was confirmed at TETM Courtesy L Grand-Clement,

JPh Tock 11/29 SMACC Progress report by activity  M Welding : Done in ≈ 6 sec-eq:  Routinely 60 ICs/week  Work concentrated in 1 sector, starting in 34 (7 th /8)  No major disturbance  Exactly on the baseline presented on  Detailed presentation at next LSC As presented LSC Slightly ahead of revised schedule Courtesy S Atieh

JPh Tock 12/29 SMACC Progress report by activity  M sleeves leak testing : Completed in ≈ 5.5 sec-eq  Following the M lines rewelding, less regular by nature (sectorization)  ≈ 3 weeks behind schedule  Under recovery as for the M welding Courtesy P Cruikshank / L Mourier

JPh Tock 13/29 SMACC Progress report by activity  Reclosure of interconnections : > 4.5 sec equivalent are reclosed  Work mainly in S12 and starting in S23  On the baseline  The 1000 th IC will be closed this afternoon Courtesy A Chrul / A Musso

JPh Tock 14/29 SMACC Progress report by activity  Final leak test: > 750 ICs validated, > 3.5 sec equivalent  3 weeks to have results after repumping  S56: only DFBAK subsector remains  S67: fully validated but subsectors to be revalidated after interventions on NC  S78: 12 subsectors validated  S81: 11 subsectors validated, 3 under test, several interventions  S12: 6 subsectors under test  About 1 week behind schedule, was 3 weeks at last LSC

JPh Tock 15/29 SMACC Sector 67  2 leaks fixed, one not localised, accepted as is On-going:  Reclosure and final leak test of insulationvacuum SMACC Sector 81 Remaining : Less than half of W leak test and DN200 (Back on baseline )

JPh Tock 16/29 SMACC Progress report by sector Main activities are :  Leak test of M lines  Closure of interconnections  6/14 subsectors are under final LT Main activities are :  Welding of M lines  Leak test of M lines  Start reclosure of Ics (Today)

JPh Tock 17/29 SMACC Progress report by sector Main activities are :  Work on overheated splices (More info in next slides)  Q diodes consolidation  Rewelding of M lines Main activities are :  Installation of shunts  Installation of electrical insulation

JPh Tock 18/29 SMACC Dashboards  Shunting is slowing down (Difficult cases: overheated splices, DFBAs,… )  The installation of insulation boxes is ahead of the baseline  Welding and M leak test rates are recovering the baseline schedule in parallel  Reclosure: On baseline, nominal rate achieved  Insulation vacuum leak test : RECOVERING  Disturbances of leak tests (M lines and insulation vacuum) have to be minimised

Completed New

JPh Tock 20/29 SMACC Progress report SIT  SIT  Team is reduced but can be remobilised very quickly  Activities linked to NC, leaks and overheated splices Courtesy N Bourcey, S Le Naour

JPh Tock 21/29 SMACC DFBA Courtesy A Perin, E Vergara 95% of splices are consolidated OK for just in time (New schedule) Many operations are well advanced but not completed 8 DFBAs are completed

JPh Tock 22/29 SMACC Dashboards Baseline:82.7 % (77.4 %) Completed:84.2 % (78.9 %) Delay -3 (-3) days Baseline:76.9 % (72.8 %) Completed:74.9 % (69.0 %) Delay 10 (20) days Ahead of schedule Decreasing delay  Arc splices: Stable but difficult cases ahead  SIT Delay decreases, waiting validation  DFBA: Many activities on-going In the shadow of the arcs Baseline:85.7 % (81.1 %) Completed:67.1 % (57.4 %) Delay 3 (4) months Recovering

JPh Tock 23/29 SMACC Dashboards Progress: Baseline:82.5% (77.5 %) Completed:82.1% (76.6 %) Delay2 (6) days Decreasing ; Δbaseline <≈ Δcompleted

JPh Tock 24/29 SMACC Overheated splices From LSC of Courtesy C Scheuerlein, F Savary Confirmed as is Within the present schedule, possible to repair 4 to 5 splices with new cables [Forecast is max 6]

JPh Tock 25/29 End of project issue Courtesy R Ostojic, M Struik In order to alleviate effect of the end of work atmosphere, presence in the tunnel is increased: * One extra staff (Thx TE-VSC) to second worksite supervisors * Auditors are reinforced and are intensifying audits

JPh Tock 26/29 SMACC Summary on progress Main 13 kA Splices: On schedule  Q Diodes consolidation : Almost all components are at CERN and tested  Overheated splices : to be followed up closely Leak test rate is according to forecast,  slightly more needed Special Interventions:  Delay is decreasinng Almost all planned interventions are completed  Focus on NC DFBA: Activities are back in the shadow of arc splices (except 56-78) SMACC: About 2 days of delay, reducing wrt schedule defined one year ago !! Very slightly more than nominal rate achieved these last 24 weeks !

JPh Tock 27/29  Sector 56 :  Final leak test and reconnection of DFBAK  Sector 67 :  Reclose insulation vacuum and start final leak tests  Sector 78  Work on NC  Reconnection of DFBAO-SHM  Sector 81 (Priority)  Complete insulation vacuum leak test  Sector 12 (Priority)  Reclose last ICs  Progress on insulation vacuum leak test  Sector 23  Complete the installation of electrical insulation  Complete M line rewelding (but NCs)  Progress on M-lines leak testing  Start reclosure of ICs  Sector 34  Work on overheated splices  Complete consolidation of Q diodes  Sector 45  Progress on installation of shunts  Progress on electrical insulation SMACC Main activities for the next 2 weeks

JPh Tock 28/29 Conclusions  Project is almost back on schedule (-2 days)  Mind the last X % effect  Leak testing is reaching the planned rates  DFBA consolidation is progressing very well  Overheated splices : On the critical path  S67 is almost ready for next step (ElQA before cooldown foreseen end of April)  S81 should be ready on time for pressure test ( )

JPh Tock 29/29 Advancement is > 80 % …. But

JPh Tock 31/29