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Overall planning, consolidation, stops, time line. K. Foraz MAC – April 27th 2010. Contents. 2 years cycles Technical stops Xmas breaks Shut-down 2012 LHC Injector chain Overall timeline & conclusions. 2 years cycle: Global strategy. Operate machines on a 2 year basis

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Overall planning, consolidation, stops, time line


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    1. Overall planning, consolidation, stops, time line K. Foraz MAC – April 27th 2010 K. Foraz - Machine Advisory Committee

    2. Contents • 2 years cycles • Technical stops • Xmas breaks • Shut-down 2012 • LHC • Injector chain • Overall timeline & conclusions K. Foraz - Machine Advisory Committee

    3. 2 years cycle: Global strategy • Operate machines on a 2 year basis • Technical stops to solve N.Cs and anticipate preventive maintenance • Mid-period: Xmas break to perform minimum maintenance activities K. Foraz - Machine Advisory Committee

    4. 2 years cycle: LHC monthly technical stops • 3 days each month: • to anticipate preventive maintenance • started: ventilation, fire, gas, access, sniffer… • to perform minor consolidation works: • Heaters on current leads, QPS • To solve non conformities encountered during operation: • Cryogenics, ventilation, leaks, instrumentation… • 3 days during which ~ 1day is dedicated to RP survey, electrical lock-out and unlock-out • In late summer, we have to analyze if it would be more efficient to increase the periodicity and the length of the technical stops (ex: 1 week each 7 weeks) K. Foraz - Machine Advisory Committee

    5. 2 years cycle: Injectors Technical Stops • Technical stops • 3 days/quarter • Resources shared with LHC !!! • Observation of a rise in the number of faults occurring during operation, which might be attributed to the fact that only the “bare minimum” work was carried out in January, (example: interlocks being activated because drifting values reach the permitted limit levels) • But reliability still high K. Foraz - Machine Advisory Committee

    6. 2 years cycle: Maintenance activities (1/3) • Preventive maintenance activities have been sorted out by priorities • Priority 1 corresponds to the minimum maintenance of the systems linked to legal or security requirements (personal / machine) : Cooling-towers, pumps, ventilation, AUG, UPS, cryogenics, fire-evacuation, ODH, gas. In addition for injectors: magnets replacement, LINAC2 source, PC Siemens (rotating machine) … • Most of these activities can be performed in 4 weeks…but K. Foraz - Machine Advisory Committee

    7. 2 years cycle: Maintenance activities (2/3) Example of duration drivers K. Foraz - Machine Advisory Committee

    8. 2 years cycle: Maintenance activities (3/3) K. Foraz - Machine Advisory Committee

    9. 2 years cycle: Xmas breaks Subject of the Xmas breaks is being studied with 2 options: Availability of the machine during operation versus Xmas break length (mimimummaint.) K. Foraz - Machine Advisory Committee

    10. 2 years cycle - conclusions • Technical stops • N.C. solving, anticipation of preventive maintenance, minor consolidations • LHC: Increase frequency & length or not • Injectors: 3 days/quarter • Xmas breaks – 7/11weeks • Dilemma between risks & length of operation • Resources • Hiradmat project needs 8 weeks  Do not worsen the situation K. Foraz - Machine Advisory Committee

    11. 2012 Shut-down • LHC - Main consolidations to be performed • Interconnections (see talk of Francesco Bertinelli) • R2E (see talk of Roberto Losito) • Collimators (see talk of Ralph Assman) • Injector chain K. Foraz - Machine Advisory Committee

    12. 2012 Shut-down – LHC: Interconnections (1/3) Interconnections Rate = 50 IC/week, 14 wks for 1st sector 5 wks later for 2nd sector From warm-up to powering tests Warm-up Warm-up ELQA @ warm ELQA @ warm ELQA @ cold ELQA @ cold Sector 1 Pressure test - last leak tests - flushing Cool=down Cool=down Pressure test - last leak tests - flushing Powering tests Powering tests ? Sector 2 0 5 10 15 20 25 30 35 0 5 10 15 K. Foraz - Machine Advisory Committee

    13. 2012 Shut-down – LHC : Interconnections (3/3) Taking into account 15% of margin to absorb additional works, delays…, and postponing cool-down in order to ease access and works --- 16 months shut-down 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 K. Foraz - Machine Advisory Committee

    14. 2012 Shut-down – LHC : Maintenance One entire year is enough for the maintenance  Schedule maintenance as late as possible / remaintain --- 2 years of operation 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 K. Foraz - Machine Advisory Committee

    15. 2012 Shut-down – LHC : Collimation (1/2) Success oriented: Readiness for installation (point 3) : 2012 Then 13 weeks are needed to close, test, leak test the IC’s afterward Conservative: Installation (point 3) : shut-down 2015 K. Foraz - Machine Advisory Committee

    16. 2012 Shut-down – LHC : Collimation Latest collimator: end of December -> end of the shut-down end of June !! Being ready earlier will have an impact on the end date, because of the interconnection resources. Schedule will be reviewed as soon as a technical solution will be adopted’  Delay the collimation installation in 2014-2015 will certainly increase the length of the 14-15 shut-down (6months) Sector 34 Sector 23 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 K. Foraz - Machine Advisory Committee

    17. 2012 Shut-down – LHC : R2E At least 9-10 months are available. Shielding at points 1 & 5 and relocation of equipment at point 7 & 8 are being studied. 9-10 months looks OK, but need to check with resources used by other interventions K. Foraz - Machine Advisory Committee

    18. 2012 shut-downs - Injectors • Ususal maintenance activities: • electricity, cooling & ventilation, fire… • Usual shut-down works: • RF, magnets, cables, kickers • Projects (if approved) • Consolidation • PSB @ 2GeV • SPS upgrades (RF,…) K. Foraz - Machine Advisory Committee

    19. 2012 shut-down: conclusions • 16 months shut-down, driven by interconnection works, taking into consideration 15% margin from strict minimum. • Includes interconnections, R2E, maintenance • Collimation: • Latest collimators ready in December – 2 additional months • To be looked at in detail mid 2010 • Maintenance & R2E: OK K. Foraz - Machine Advisory Committee

    20. Overall timeline & Conclusions • Xmas breaks & Technical Stops • Lenght of Xmas break to be decided in July: 7 weeks vs 11 weeks • Dilemma between risks & length of operation • Resources • Hiradmat project - 8 weeks • Injectors: minimal maintenance & minimal tech. Stops =>  number of faults • Shut-down 2012 • LHC = 16 months shut-down • driven by the interconnection project • OK for maintenance & R2E • Re-evaluation after the choice of the technical solution for the collimation project • Injectors = 2 * 4 months LHC Injectorchain 2010 2011 2012 2013 2014 2015 K. Foraz - Machine Advisory Committee