LSC 30/08/13
description
Transcript of LSC 30/08/13
LSC 30/08/13
F. Duval / EN-EL
Update on EN-EL Activities during LS1
1 12/09/2013
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
EN/EL Activities
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Network Incidents
Date Failure Substation
March 9, 2013 18 kV current transformer ME10 Meyrin SIG Source
July 20, 2013 MP2 18 kV inter site link Prévessin Main s/s + Route de l’Europe
August 2, 2013 18 kV voltage transformer Prévessin Main s/s
August 9, 2013 MP2 18 kV inter site link - bis
Prévessin Main s/s + Route de l’Europe
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Events list:
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1. 18kV TC FAILURE AT ME10 S/S
Network Incidents
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Network Incidents
- 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
1. 18kV Current Transformer Failure at ME10 s/s
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Network Incidents
2. MP2 18 kV cable link failure seen from the Prévessin Main s/s on Route de l’Europe
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Network Incidents
- 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.
2. MP2 18 kV cable link failure seen from the Prévessin Main s/s on Route de l’Europe
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Network Incidents
3. 18 kV voltage transformer failure at the Prévessin Main s/s
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- 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
3. 18 kV voltage transformer failure at the Prévessin Main s/s
Network Incidents
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Network Incidents
4. MP2 18 kV cable link second failure seen from the Prévessin Main s/s on Route de l’Europe
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Network Incidents
- 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
4. MP2 18 kV cable link second failure seen from the Prévessin Main s/s on Route de l’Europe
1) Configuration before LS1
Network reconfigurations
2) Maintenance 400 kV
Network reconfigurations
3) 66 kV works
Network reconfigurations
4) Today (as before LS1 but for MP2)
Network reconfigurations
Work in progress
All LHC points :• UPS replacement• AUG improvement• Maintenance on 18 kV• Diesel’s PLC
Maintenance 66 kV S/SNew protection system 66 kV
Maintenance HTB 400 kV
More than 100 operations on the HV network during August 2013 higher risk of failure
Network operation
Report on activities
AUG tests on all CERN sites in 2013 80% complete
Safety network tests September 3rd
“Autotransfert” tests September 12th
Tests
Progress of Projects
Maintenance & consolidation
Power transformers & S/S
400 kV
90% complete
Maintenance, extension, consolidation
Power transformers & S/S
66 kV 90% complete
Replacement of the Protection System
SEH9 – BE9 – LHC 1,2,4,8
66 kV 85% complete
New S/S and power transformer
Meyrin Site MEH59 66 kV 90% complete
Report on activities
Progress of Projects
Cubicle maintenance (500)
All CERN sites 18 kV 50% complete
Switchgears extension LHC1,2,5,8 BE 3.3 & 18 kV
30% complete
Switchgears replacement
LHC 4,6 18 kV 40% complete
New switchboards ME59, BE91,BA5 66 kV 50% complete
New PLC system for normal/safety network
B513 (ME43) 18 kV 90% complete
New substation commissioning: HV & Diesel network, CCC feeders…
BE91 18 & 3.3 kV
60% complete
SPS cable network: connections & commissioning
SPS BAs & Prevessin 18 kV 20% complete
Report on activities
Low Voltage: distribution & safety networks, UPSs
UPS replacement LHC, SPS, PS, MEY 25% complete
New UPS distribution for the experiments
LHC1,2,5,8 50% complete
Consolidation Normal/safety networksPLCs & switchgears
LHC 40% complete
New redundant distribution including UPSs for the CCC
BE91 60% complete
Consolidation/replacement of 48V distribution
BE, SDX1, ME49, SEH9…)
30% complete
Switchgear maintenance LHC mainly 40% complete
New power distribution PS ME85 80% complete
R2E LHC 45% complete
Consolidation for CV, EPC, CRG, Exp.
Mainly LHC 10% complete
AUG reliability increase campaign
All CERN 20% complete
Don’t Forget all the cabling activities reported separately
Various
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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
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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 30/08/2013
MCHF
Already paid in 2013 (charged on Group Budget Codes)
Finished work 4.3
Commitments Work in progress 12.7
Down payments already paid
5.2
Expected down payments in the settlements of September 2013
1.3