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LSC 30/08/13

LSC 30/08/13. Update on EN-EL Activities during LS1. F. Duval / EN-EL. 1. 12/09/2013. EN/EL Activities. Summary Events on the network Incidents Network reconfigurations Network operation Update on activities Tests Projects and various EL activities for other CERN groups:

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LSC 30/08/13

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  1. LSC 30/08/13 • Update on EN-EL Activities during LS1 F. Duval / EN-EL 1 12/09/2013

  2. EN/EL Activities Summary • Events on the network • Incidents • Network reconfigurations • Network operation • Update on activities • Tests • Projects and various • EL activities for other CERN groups: • Invoicing and payments 2 LSC - François Duval EN-EL

  3. Network Incidents • Events list: LSC - François Duval EN-EL

  4. Network Incidents 18kV TC FAILURE AT ME10 S/S LSC - François Duval EN-EL

  5. Network Incidents 18kV Current Transformer Failure at ME10 s/s • EHT611*10 Trip for Earth Fault Bus-Bar protection • TC installed in cubicle ME105*10 phase R blasted • No impact on operation; Swiss source was on idle • TC replaced with a spare • Fault analysis (EDMS 1278235) reported the cause in component ageing LSC - François Duval EN-EL

  6. Network Incidents MP2 18 kV cable link failure seen from the Prévessin Main s/s on Route de l’Europe LSC - François Duval EN-EL

  7. Network Incidents MP2 18 kV cable link failure seen from the Prévessin Main s/s on Route de l’Europe • EMD223/BE Trip for Earth Fault protection • 18 kV Cable link BE-ME68 failed in 3 points • Autotransfert tests foreseen by beginning August shifted to September. • Cable repaired. • Fault analysis (EDMS 1303412) reported the cause in component ageing  increasing partial discharges. LSC - François Duval EN-EL

  8. Network Incidents 18 kV voltage transformer failure at the Prévessin Main s/s LSC - François Duval EN-EL

  9. Network Incidents 18 kV voltage transformer failure at the Prévessin Main s/s • EMD215/BE Trip for Imax (3 Phase SC, 18 kA) protection • 18 kV TP (EMD213/BE cubicle) blasted 120 sec. after energization (cubicle damaged as well). • During commissioning, no impact on operation. • All internal parts of the cubicle were replaced. • Fault analysis (EDMS 1308284) reported the cause in voltage transformer overload LSC - François Duval EN-EL

  10. Network Incidents MP2 18 kV cable link second failure seen from the Prévessin Main s/s on Route de l’Europe LSC - François Duval EN-EL

  11. Network Incidents MP2 18 kV cable link second failure seen from the Prévessin Main s/s on Route de l’Europe • EMD223/BE Trip for Earth Fault protection • 18 kV Cable link BE-ME68 (PS machine) recently repaired & failed again • No impact on operation. • Decision made to not use it anymore. • Temporary (until LS2) solution found using one set of future MP10 Cable link already pulled (this link is made of 4 sets of 3 cables  4X15 MVA) • Fault analysis (EDMS 1308394) reported the probable cause in partial discharge LSC - François Duval EN-EL

  12. Network reconfigurations 1) Configuration before LS1

  13. Network reconfigurations 2) Maintenance 400 kV

  14. Network reconfigurations 3) 66 kV works

  15. Network reconfigurations 4) Today (as before LS1 but for MP2)

  16. Network operation Maintenance HTB 400 kV Work in progress Maintenance 66 kV S/S New protection system 66 kV • All LHC points : • UPS replacement • AUG improvement • Maintenance on 18 kV • Diesel’s PLC More than 100 operations on the HV network during August 2013  higher risk of failure

  17. Report on activities Tests Progress of Projects

  18. Report on activities Progress of Projects

  19. Report on activities Low Voltage: distribution & safety networks, UPSs

  20. Various Don’t Forget all the cabling activities reported separately

  21. Invoicing and payments • The groups requested to pay in 2013 as much as possible the work done in 2013 • Down payments exist in all EN/EL contracts(Not limited to LS1) • Down payments are allowed with contractual restrictions • For each order (OSVC) higher than 20 kCHF • Up to 80% of the work actually carried out (No payment in advance!) • Work progress is recorded once a week by the contractors in the EL information system • Down payments are requested by the contractors, checked and paid by CERN in monthly settlements LSC - François Duval EN-EL

  22. Invoicing and payments • Accounting summary (after the settlements of August 2013). • 4 installation contracts (C202: MZ-DRAKA, C209: SPIE, C210: EMTE, E094B: CEGELEC) • Ratio is 1.3/(12.7+4.3) = 8% eligible but not yet paid • EL is committed to improving this ratio for the 2013 yearly settlement LSC - François Duval EN-EL

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