Documentation on present Documentation on present system and piping layoutsystem and piping layout

P. TropeaP. Tropea

Tracker Upgrade Engineering and Cooling 12 November 2008

5 Nov 2008 P. Tropea 2

Cooling plantCooling plant• Cooling system technical specification (including general

layout dwgs of the caverns) https://edms.cern.ch/document/414587/2

• Cooling plants general layout (not updated): UXC55 https://edms.cern.ch/file/710507/1/060303_UXC55_Cooling_layout.DWG UXC55far https://edms.cern.ch/file/710507/1/060310_UXC55_far.dwg

Pixels https://edms.cern.ch/file/710507/1/060614_Pix_3001540103.DWG, https://edms.cern.ch/file/710507/1/060614_Pix_3001540203.DWG

• Components Technical files (common to C6F14 plants) https://edms.cern.ch/document/581341/1, https://edms.cern.ch/document/679179/1. Some newer components missing. Trying to collect the whole…

5 Nov 2008 P. Tropea 3

Piping - LayoutPiping - Layout

•Pipe routing in UXC (balconies and top of cooling plants)CMSDITRM0712 .. NEAR SIDE ASSEMBLY - ROUTING TRACKER PIPES CMSDITRM0713 .. NEAR SIDE ASSEMBLY - ROUTING TRACKER PIPES …. CMSDITRM0719 AA FAR SIDE ASSEMBLY - ROUTING TRACKER PIPES CMSDITRM0720 .. PIPES TRACKERS ASSEMBLY - TEMPORARY SUPPORTS•Pipe routing on YB0Integration office has the whole “maquettes”, check to be done if they are available in “easily digestible” formats•Total lengths PP1/Cooling plants

Yoke sector

CP PP1-VT VT-PP2Total inside

CMSPP2-CB

Total overall

Vactank Yoke1 SS2 8.5 11 20 11 315 SS1 9.8 11.7 22 23 455 TS 9.8 11.7 22 23 455 PIX 9.8 11.7 22 18 408 SS1 11.4 9 20 16 369 SS2 9.6 13 22 33 559 TS 9.6 13 22 21 439 PIX 9.6 13 22 10 32

12 SS2 7.5 13 21 18 392- SS2 7 10.4 17.4 15 326- SS1 12.3 7.7 20 23 436- TS 12.3 7.7 20 23 436- PIX 12.3 7.7 20 18 387- SS1 8.4 11.4 19.8 17 37

10- SS2 8.1 7 15.1 32 4710- TS 8.1 7 15.1 33 4810- PIX 8.1 7 15.1 29 4411- SS2 8.5 10.8 19.3 17 36

5 Nov 2008 P. Tropea 4

Piping – materials & jointsPiping – materials & joints• Type and quality

For Tracker: bundles of pipes are 12 mm ID from PP1 to PP2, 14 mm ID from PP2 to the cooling plantsFor Pixels: bundle of pipes are 12 mm ID all along the path PP1/plantQuality of the pipes: soft copper, cleanliness level as per EN 12735-2 (Round pipes without welding for air conditioning and refrigeration – Max residual after solvent evaporation 38 mg/m2 – for medical applications this value is 20 mg/m2)

• Brazing procedure qualificationIn the frame of the manufacturing of the cooling circuit of the CMS tracker, Cu tubes have to be hand torch brazed. Samples have been produced by O. Morin TS/MME (lap joints: sleeve and nesting) to assess acceptance criteria through tensile, pressure and metallographic tests.Cu tubes: C12200Filler material: Silfos 5 (AWS B-CuP3) (no flux brazing paste)

5 Nov 2008 P. Tropea 5

Piping – brazingPiping – brazing

Acceptance criteria: - visual inspection, - tensile test and Rm > 220 MPa- leak test 30 min 20 bar, burst test (>200 bar), - metallurgical section: continuous ligament >3mm, total ligament . 5mm over 8 mm length

2.3 mm 1.4 mm 7.1 mm