1. LHC Hardware Commissioning Training
Technical Infrastructure
T.Pettersson TS/CSE

2. Contents Introduction – TI@CCC Piquet support -(Power, CV & Access)
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Introduction –
Piquet support -(Power, CV & Access)
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
More powering slides – for information

3. Introduction – TI@CCC TI Mandate
The desk monitors and operates 24 hours a day, 365 days a year via a fully computerized remote control system the entire technical infrastructure of CERN comprising:
the electrical and fluid distribution networks
heating, cooling, ventilation and air-conditioning equipment
safety and communication installations
high vacuum and cryogenic systems for SPS, LHC test facilities
control and monitoring infrastructure 
Calls the respective piquet services on your behalf!

4. Piquet service from TS/EL
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Guaranteed 365/365 days and 24/24/ hours
Team of two CERN staff from TS/EL
Contact ONLY through the desk
Phone or 72231
Intervention delay
60 minutes outside working hours and on holidays
30 minutes inside working hours (8h-12h and 13h-17h)
Intervention follows a defined procedure: consignes piquet TS/EL révision n°7
EDMS n°
Electrical Network information – Safety/Assured/Normal/UPS/48Vdc:
=2&resId=0&materialId=slides&confId=7306

5. Piquet service from TS/CV
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Guaranteed 365/365 days and 24/24 hours
Subcontractor and TS-CV staff
Contact ONLY through the desk
Phone or 72231
Intervention delay
60 minutes outside working hours and on holidays
30 minutes inside working hours (8h-12h and 13h-17h)
Intervention follows procedure: Consignes piquet TS/CV
EDMS n°
Note: special handling for LHC HwC– see section 5 in EDMS document
Note : There is only one team available – if it is busy you will have to wait.

6. Piquet service from TS/CV- flow chart
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions

7. LHC Access problem procedure - Valid before operation with beam
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
LHC Calls TI
(technical alarm)
User calls CSA
CSA
78877
72201
Piquet
Cegelec
Technical problem
ODM +
Call
Close ODM
Valide
ODM
Traffic management,
Rearm Emergency
Passage
Guard
Piquet
TS/CSE/AAS
access.control.support
@cern.ch
AdministrativeProblems
Control
HRT or ADS

8. Context- the LHC powering Circuit
Context – LHC Powering Circuit

9. Powering - DC and control cables and their handover status
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Air cooled power cable cross sections:
Warm magnets: 500mm2 ALU, 240 mm2 CU.
Cold magnets: 400, 240, 120, 95, 35 and 25mm2 CU
Tests:
- All cables have been tested (section, temperature, layout, disposition, connections etc…) during the short circuit tests. The same applies to warm magnet circuits and connections to power converters.
- The polarity of the cables and the identification (special lables) has been verified during the polarity tests.
Water cooled powering cables
Cable cross sections: 800, 1000, 1300 and 2000 mm2.
Presence of Elettas (flowmeters) interlocked with the converters in the return path of the water circuit. No specific synoptic available from EL.
- Idem warm cables. Individual test and setting of each flowmeter.
Control cables
Tests of all cables at the end of each cabling compaign. All cables have been given to the users for individual verification during the system tests.

10. Levels of availability of the electrical supply
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions No
but depends on
battery autonomy : 2h to 3h
Yes
48 Vdc
ECD
but depends on battery autonomy : 10min to 2h
Yes or No
UPS
EOD
30s to 90s
Safety
ESD
Assured
EAD
Downtime =
Mains downtime
Normal
EBD
Downtime ?
Backed up by Diesel set ?
Switched off by AUG ?
Mains perturbations
visible ?
Types
of supply

11. Powering - Circuits for water cooled cables (Principles)
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
How water is used in the Circuits 13kA RB, RQD, RQF
H1-H4: Water circuits
E: Elettas UA RA
Copper tubes
C1-C6: WCC
T1-T3: WCT E E
Water cooled cable!
H 1
H 2 C4 T2 C3 C2 T1 C1 -
Flexible hoses
Water in
Energy extraction system
DFB E + T3
H 1 RR C5 C6
H 3
H 4 E
In the same circuit, Elettas (flowmeters) are
connected in series.
In case of water flow below threshold in any water circuit,
the converter receives an interlock signal.
All four water circuits are supplied from the same source!
Energy extraction system
DFB E
Water out

12. Powering - Circuits for water cooled cables - reality

13. Powering - Circuits for water cooled cables - reality

14. Powering - Circuits for water cooled cables - reality

15. Water circuits for cooled cables (Principles)
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Water cooling for 4, 6, 8 kA electrical circuits
Flexible hoses
Water tube
Water tube E E + +
DFB - -
DFB + E E - +
DFB -
Demineralized water characteristics for each building:
- Conductivity: bet 0.1 and 1 Micro Siemens/cm
Max. input temperature : 28 deg C
Pressure in operation : 16 bars
Max. delta T : 15 K
Water speed : less than 2 m/s
Total water pressure drop : less than 2 bar
Pt1 special: Power switch- beam optics reasons

16. General Emergency Stop – AUG (in French) LHC arc 7-8
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
AUG – Emergency stops - objective
Cut all power sources that potentially represent a danger.
Requirement specifications for the AUG as per IS 5 (EDMS: )
An AUG does not cut power to the safety systems (lifts, emergency lights and markings, smoke extraction, pumps, UPS for communications, fire detection).
All equipment powered shall be designed to ensure that no extra risks are created when the Fire Brigade intervenes ( mechanical protection, orange fluorescent markings etc..)
All AUGs in a given zone give the same result.
ALL AUGs are designed to fail safely.
ALL AUGs will generate a Level 3 alarm which alerts the Fire Brigade immediately.
Infrastructure arc 7-8
4 racks in US85 – SE8 – UJ76 – SE7
Underground AUG safety chain
LHC8 in UA83, RA83, tunnel R81 et R82, RE82, US85, UW85, UX85
LHC7 in UJ76, RR77, tunnel R77 et R79, RE78, TZ76
Surface AUG safety chain which may influence the underground!
LHC8 in SE8, SD8, SU8, SH8, SR8
LHC7 in SE7, SD7, SU7, SR7

17. Cooling - Underground pumping stations UW85 (primary water from SF8)
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Primary water circuit synoptic

18. Cooling - Primary water circuit from SF8 and underground pipe feeds
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
PLC problem
Alarme

19. Underground water piping network (Demineralised water)
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
Alarm

20. Ventilation Surface Building
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions

21. Tunnel ventilation for accessible zones (HwC data)
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions

22. LHC Access system architecture
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions

23. Access to LHC
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
For sector 7-8 little impact of new access system- only access control imposed.
The access safety system aspects will enter into play during the summer with ever increasing impact on those machine elements that are part of a safety chain.
At closure of machine 31/08/07 the LHC access system will be ready for production. This includes that dosimeters are required and a biometric verification of your identity will be done before you can enter….
Control of the LHC access system will be managed from the desk. Access to experimental caverns can be delegated to the experimental control rooms under certain conditions.

24. Conclusions For issues with Power, Cooling and Ventilation:
Introduction
Piquet support
Electrical Power Distribution
Cooling and Ventilation
Access systems
Conclusions
For issues with Power, Cooling and Ventilation:
For issues with the access system:
CSA (guards) 78877
Bat 55 for cards, dosimeters and biometric data acquisition.
for technical problems
LHC Access system LHC desk (later)
Extra slides on powering schemes

25. Acknowledgements
TS/EL: Felix M.R.; J-C Guillaume, A. Funken, S. Brown, G. Cumer
TS/CV: JIG, S. Deleval
TS/CSE: P. Ninin, L. Scibile

26. CCC LSS8L POINT 7 Point 8 Surface RE82 US85
Normal tunnel powering from Point 8
400kV
Transformer
Prevessin
Point 8 Surface
EMD3/8E
EMD1/8E
surveillance
EMD2/8E
CCC
EBD1/8E
LSS8L
RE82
US85 F2 F2 F2
EBD1/82
EAD1/82
EBD1/85
POINT 7 F2
Alim Vide, RYLA

27. CCC LSS8L Point 8 Surface RE82 US85 Powering Tunnel UPS from Pt 8
400kV transformer EDF- CERN Prevessin
Point 8 Surface G
CCC
EMD3/8E
EMD1/8E
EMD2/8E
ESD1/8E
EBD1/8E
LSS8L
RE82
US85 F3 F3 F3
EBD1/82
EAD1/82
EBD1/85
UPS
EOD1/82
ESD1/85
UPS
EOD1/85
To POINT 7

28. UA83 LSS8L Point 8 Surface US85 Powering UA83
400kV transformer EDF- CERN Prevessin
Point 8 Surface
CCC G
EMD3/8E
EMD1/8E
EMD2/8E
ESD1/8E
EMD6/8E
EBD1/8E
UA83
EMT601/83
RBA.78
EBD1/85
ERD1/83
EBD1/83
ESD1/85
UPS
US85
EOD1/83
LSS8L

29. LSS7R Point 7 Surface RE78 Powering tunnel UPS from UJ76 CCC G F3 F3
EMD1/7E
EMD3/7E
ESD1/7E
EBD1/7E
LSS7R
RE78 F3 F3 F3
EAD1/78
EBD1/78
EBD1/76
UPS
EOD1/78
UPS
ESD1/76
UPS
EOD1/76
UPS – VRJGE, DYPA, DYPB,CSJDA, BYP:M F3

30. Powering RR77 & UJ76 UJ76 Point 7 Surface RR77 LSS7R To POINT8 CCC G
EMD1/7E
EMD3/7E
RR77
ESD1/8E
EBD1/7E
EBD1/77
LSS7R
EOD1/77
ERD1/77
EBD1/76
UPS F3
EOD1/76
ESD1/85
ERD1/76
To POINT8
UJ76