1. CMS Pixels upgrade CO2 cooling transfer lines Draft spec – for introduction Paola Tropea & Hans Postema 5 December 2012

2. CO2 cooling plants being designed & built for CMS Pixels upgrade First plant & manifold prototype to be installed in TIF (bldg 186) in Jan 2013 Final systems at P5 to be installed end of LS1: 2 plants (USC) & 2 manifolds (UXC) Transfer lines (plant to manifolds) must be ready before magnet on (May 2014) Who does what Construction & commissioning of plant and manifolds PH-DT + CMX Construction of transfer lines: subject of the meeting Boundary conditions Operating pressure = 100 bar Design pressure = 110 bar (test pressure =157 bar) Operating T = -35/+30 (insulation!) Evaporative system: profits of concentric lines! liquid (inlet line) pipe inside vapor (return line) pipe CO2 cooling plants being designed & built for CMS Pixels upgrade First plant & manifold prototype to be installed in TIF (bldg 186) in Jan 2013 Final systems at P5 to be installed end of LS1: 2 plants (USC) & 2 manifolds (UXC) Transfer lines (plant to manifolds) must be ready before magnet on (May 2014) Who does what Construction & commissioning of plant and manifolds PH-DT + CMX Construction of transfer lines: subject of the meeting Boundary conditions Operating pressure = 100 bar Design pressure = 110 bar (test pressure =157 bar) Operating T = -35/+30 (insulation!) Evaporative system: profits of concentric lines! liquid (inlet line) pipe inside vapor (return line) pipe Overview of the project Liquid Vapor Insulation 5 December 2012Paola Tropea & Hans Postema2

3. Integration of the cooling plants in USC Electronics Rack balcony 1 2 3 4 CV Room (one level lower) Tunnel UXC 5 CO 2 4 1 2 3 5 Electronics Rack balcony 4 5 December 2012Paola Tropea & Hans Postema3

4. CO2 cooling system in USC: foot print 4135 3000 1680 1000 Cooling Plant Accumulator 600x900 1680 Cooling Plant access from both sides 1000 Accumulator 600x900 Electronics Racks (x2) Two concentric transfer lines (insulated, vacuum?), one per cooling plant from USC to UXC 5 December 2012Paola Tropea & Hans Postema4

5. 3 12 USC55UXC55 Transfer lines from USC to UXC Preliminary sketch – integration studies on-going -Z End +Z End TX54 Manifolds CO2 plants 5 December 2012Paola Tropea & Hans Postema5

6. Plumbing Manifolds in UXC Freon Chiller (CV room) Tunnel to UXC Pneumatic Air & (Under Floor) 5 December 2012Paola Tropea & Hans Postema6

7. CO2 Plumbing: Plant to Manifolds Plug! (Insulation) Rail system 2 insulated, concentric tubes through the ~20m tunnel To UXC Jerome 5 December 2012Paola Tropea & Hans Postema7

8. Entry in UXC To Manifolds Experiment Cavern Transfer lines exit area in UXC from USC 5 December 2012Paola Tropea & Hans Postema8

9. Transfer lines in UXC: from the UXC entrance to the manifolds Option 1) over CMS: abandoned Option 2) along the wall: ok 5 December 2012Paola Tropea & Hans Postema9

10. In the USC (1) 5 December 2012Paola Tropea & Hans Postema10

11. In the USC (2) 5 December 2012Paola Tropea & Hans Postema11

12. In the USC (3) 5 December 2012Paola Tropea & Hans Postema12

13. In the UXC (1) 5 December 2012Paola Tropea & Hans Postema13

14. In the UXC (2) 5 December 2012Paola Tropea & Hans Postema14

15. In the UXC (3) 5 December 2012Paola Tropea & Hans Postema15

16. Manifold 2 nd to come.. To Pixel Detector: Branch to existing copper tubes 5 December 2012Paola Tropea & Hans Postema16

17. Possible products? 5 December 2012Paola Tropea & Hans Postema17

18. Schedule Sept 2012/Mar 2013 – Design Dec 2012 / Mar 2013 – Specifications Feb 2013/April 2013 - Verification of the design on site May 2013 - CMS Technical Coordination review on transfer line project June 2013 – Tender Sep 2013 – Place the order 2014 - Installation on site May 2014 - Mandatory availability of the transfer lines 5 December 2012Paola Tropea & Hans Postema18

19. Estimated dimensions (1) Inner tube needs about 10 mm diameter 110 bar design pressure Elastic limit above 1.5x110=165 bar (PED) Test at 1.43x110=157 bar (PED) 316L tube 12x1 mm, allowable working pressure: 200 bar, source: Swagelok Pressure reduction due to bending: TBD Increase in wall thickness is acceptable, if required 5 December 2012Paola Tropea & Hans Postema19

20. Estimated dimensions (2) Outside tube: DN25 Pressures identical to inner tube EN ISO 1127, 33.7 mm OD, 3.2 mm wall, design pressure 244 bar, source Outo Kumpu Elbows with straight ends, ISO R=2D 33.7x3.2 mm, design pressure: 155 bar, source Outo Kumpu Welding methods: – By hand – Orbital welding – Orbital welding with filler material 5 December 2012Paola Tropea & Hans Postema20

21. Vacuum jacket Requesting DEMACO advice on spacing between outer tube and vacuum jacket Inner and outer tube have, by design, virtually the same temperature. No thermal expansion issue expected Thermal expansion issue between tube (-30 C) and jacket (+25 C) Requesting DEMACO advice on solution 5 December 2012Paola Tropea & Hans Postema21

22. Overall goals Writing specification for tender Including DEMACO advice Respecting your production capabilities Optimization of cost by including DEMACO experience Optimize between on-site and off-site work Avoiding differences in safety approach between PED, DEMACO and CERN safety Receive preliminary approval from safety before placing the order 5 December 2012Paola Tropea & Hans Postema22

23. Drawing with dimensions 5 December 2012Paola Tropea & Hans Postema23