Long shutdown 2013: Electrical distribution activities 09/03/2012 IEFC 2012 Workshop F. Duval on Behalf of EN/EL group

Activities during LS1 Ongoing consolidation & upgrade details After LS1 activities Electrical distribution activities IEFC Workshop - François Duval 209/03/2012

3 different types of activities: 1.Consolidation and upgrade of the Electrical Network The ageing EL infrastructure must be updated to significantly increase availability rate and to meet CERN new requirements. Beyond the present CERN needs, these renovation activities have been defined according to the future CERN power demand. That’s why EL have worked with users on a 15 years power demand forecast. A complete program of consolidation & upgrade have been defined until 2025 and will be edited soon. This program cost is estimated at approximately 80 MCHF and shall be concentrated on 3 long shutdowns starting with LS1. Activities during LS1 IEFC Workshop - François Duval 309/03/2012

3 different types of activities: 2.Maintenance operations Since 2009 and the LHC start up, many maintenance operations have been postponed (mainly on 400 kV and 66 kV substations) because Christmas breaks have been shortened and because LHC Cryo could not be stopped. These postponed maintenance tasks must be done in 2013 in addition to regular scheduled maintenance. A complete stop of the 400 kV will be necessary for 4 weeks (in April 2013) to maintain the 400 kV circuit breakers and accessories. RTE will take profit of this stop to run its own maintenance program on the Bois-Tollot substation and on the Genissiat/Bois- Tollot Over Head Line. During these 4 weeks, only 60 MVA will be available from the substation on Swiss SIG side. (close to A gate in Meyrin) 60 MVA are enough to run CERN with all accelerators turned off but the cost of energy is 1.5 times the French price. (Coordination needed to avoid high consuming LS1 activities during this period) Activities during LS1 IEFC Workshop - François Duval 409/03/2012

3 different types of activities: 3.Requests from users Many requests have been announced and must be detailed in terms of workload and schedule. The estimated EL contribution, for all the requests known today matches the maximum acceptable by EL The major requests, not including LHC, are -LINAC 4 and its connection to the Booster - HIE ISOLDE -RAMSES system -Filters and compensators upgrades -Experiments: ELENA, COMPASS, NA62, East Hall B157 -PS access project -LIU activities Activities during LS1 IEFC Workshop - François Duval 509/03/2012

EL is increasing sharply its manpower in order to face a huge program of work. – Manpower of EL was 72 in 03/2011, 82 in 03/212 and is expected to be 88 in 01/2013 – Agreements have been signed with AGH Krakow to have 12 technicians operational in – 3 fellows, 4 PJAS, UPAS and 2 tech. students already joined the group – It’s important to have them early enough to integrate and train them so that they will be fully operational for the highest workload period – Having more people will become inefficient because of a lack of supervision Activities during LS1 IEFC Workshop - François Duval 609/03/2012

Prioritisation – In spite of the substantial increase of EN-EL resources our workload is already at 100% of our capacity – Further requests will leads to prioritisation of activities by LS1 management Activities during LS1 IEFC Workshop - François Duval 709/03/2012

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 809/03/2012 Reminder: Replace ageing and/or not reliable equipment Simplification for better operations and reliable protection systems Standardisation for easier maintenance & operation Elimination of identified weak points Redundancy  availability Characteristics adapted to the CERN future needs Reliability – Availability – Safety – Evolution

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 909/03/2012  Power cables 3.3/18/66 kV, control cables and optical fibres  90 km in 7 km long trenches  Tubes buried in 2011  Cables pulled in 2012  Cables connected and commissioned during LS1  Cost: 17 MCHF  6 FTE SPS Power Cables: Layout

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1009/03/2012 SPS Power Cables: tubes laying

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1109/03/2012 SMB- SPS Power Cables: cables length SMB- SPS Power Cables: cables length

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1209/03/2012 Laying of cables during machine operation Works executable out of LS1 period Contractually shall be terminated before August 2012 SPS Power Cables: Pulling cables We ask to be allowed to pull the cables into the BAs during machine run (risk of theft) Pulling machine

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1309/03/2012 CCC Re-powering - Prevessin CCC 2012 New Substation BE New 3.3 kV power generation station 2012 New 3.3 kV power generation station

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1409/03/2012 CCC repowering - BE91 Substation WHY:  Increase 18 kV Prévessin distribution  Creation of a secured power station for the SPS and Prévessin  Construction of a new LV substation to ensure full redundant infrastructure (EL + CV) for the CCC

After LS1 Activities IEFC Workshop - François Duval 1509/03/2012 Meyrin 2012 Main substation ME9 Main substation ME59 Today Meyrin + LHC1 feeder 66 kV from Prevessin B513 as an example of Meyrin User Alternative feeder from SIG

After LS1 Activities IEFC Workshop - François Duval 1609/03/2012 Meyrin 2015 Main substation ME9 New 66 kV from Prevessin 66 kV substation MEH59 Main substation ME59 Today Meyrin + LHC1 feeder 66 kV from Prevessin B513 as an example of Meyrin User Alternative feeder from SIG

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1709/03/2012 Redundant feeder for Meyrin Necessary step to cope with power increase after LS1 Necessary step to allow Meyrin consolidation between LS1 and LS2 MEH59 ME59 ME59 - Indoor 18 kVMEH59 - Outdoor 66 kV 66 kV in Meyrin- MEH59 Substation B 112

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1809/03/ Configuration since Then… Two phases to redistribute power flow After 2013, the rest of the job can be done during machines runs. ME59 Substation Local distribution Rest of Meyrin

Ongoing consolidation & Upgrade IEFC Workshop - François Duval 1909/03/2012 Other projects BA5 substation replacement ₋First replacement of 6 SPS substations ₋Replacement include 18 kV, 230 V switchboards and 48 V redundant battery charger system 66 kV protection upgrade ₋Upgrade for advanced digital functionality ₋Replacement of ageing electronics BE substation ₋Necessary redistribution of cubicles to add new feeders (BE91, New SMB, etc) Computer center B513 dedicated loop ₋Power increase on ISOLDE loop means that B513 must be fed separately New SCADA system for power network supervision ₋Developed together with EN/ICE using PVSS technology ₋Upgrade for new functionality (power flow forecast, event replay,..)

Many consolidation & upgrade activities on the power network have already started in parallel with beam operations. The final connections and commissioning, which can only be done during shutdowns, are scheduled for LS1. In other words, EL workload will be high in 2012 as well. Ongoing consolidation & Upgrade IEFC Workshop - François Duval 2009/03/2012

After LS1 Activities IEFC Workshop - François Duval 2109/03/2012 Prevessin 2013 Upgrade of BE substation 2013 Upgrade of BE substation 2012 New 3.3 kV power generation station 2012 New 3.3 kV power generation station 2012 New Substation BE SPS consolidation SPS consolidation New 18 kV and 66 kV power line to ME59 and MEH New 18 kV and 66 kV power line to ME59 and MEH Consolidation 66 kV protection system CERN Wide 2013 Consolidation 66 kV protection system CERN Wide

After LS1 Activities IEFC Workshop - François Duval 2209/03/2012 Meyrin Upgrade of ME Upgrade of ME Upgrade ME Upgrade ME New 18 kV and 66 kV from BE and SEH New 18 kV and 66 kV from BE and SEH New MEH New MEH Upgrade SEM Upgrade SEM Upgrade of 18 kV transport power lines Upgrade of 18 kV transport power lines Upgrade of ME Upgrade of ME B513 dedicated loop 2014 B513 dedicated loop

Direct redundancy lost in 2010: Network reconfiguration is now necessary After LS1 Activities 66 kV power demand upgrade Redundancy limit EHT4/EHT5 Redundancy limit EHT4/EHT5 IEFC Workshop - François Duval 2309/03/2012

After LS1 Activities 66 kV power demand upgrade Present configuration 09/03/ IEFC Workshop - François Duval

After LS1 Activities 66 kV power demand upgrade 09/03/ IEFC Workshop - François Duval LS2 upgraded configuration

After LS1 Activities 66 kV power demand upgrade 09/03/ IEFC Workshop - François Duval Redundant configuration Advanced upgraded configuration

After LS1 Activities 66 kV power demand upgrade 09/03/ IEFC Workshop - François Duval Ideal configuration

After LS1 Activities IEFC Workshop - François Duval 2809/03/2012 Other activities Replacement of SPS substations North area consolidation & Upgrade PS distribution Upgrade (with LIU) West Area Upgrade (new projects)

Conclusions IEFC Workshop - François Duval 2909/03/2012 The LS1 step cannot be missed by EL. Otherwise, most of the works will be postponed to LS2 (3 years) The risk is a significant increase of failure rate due to: ageing electronics used in core protection relays ageing devices (> 40 years) loss of possible alternative configurations because of increased power demands