1. Documentation on present system and piping layout P. Tropea Tracker Upgrade Engineering and Cooling 12 November 2008

2. 5 Nov 2008P. Tropea2 Cooling plant Cooling system technical specification (including general layout dwgs of the caverns) https://edms.cern.ch/document/414587/2 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 https://edms.cern.ch/file/710507/1/060303_UXC55_Cooling_layout.DWG https://edms.cern.ch/file/710507/1/060310_UXC55_far.dwg 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… https://edms.cern.ch/document/581341/1 https://edms.cern.ch/document/679179/1

3. 5 Nov 2008P. Tropea3 Piping - Layout Pipe routing in UXC (balconies and top of cooling plants) CMSDITRM0712CMSDITRM0712.. NEAR SIDE ASSEMBLY - ROUTING TRACKER PIPES CMSDITRM0713.. NEAR SIDE ASSEMBLY - ROUTING TRACKER PIPES CMSDITRM0713 …. CMSDITRM0719 AA FAR SIDE ASSEMBLY - ROUTING TRACKER PIPES CMSDITRM0720.. PIPES TRACKERS ASSEMBLY - TEMPORARY SUPPORTSCMSDITRM0719 CMSDITRM0720 Pipe routing on YB0 Integration office has the whole “maquettes”, check to be done if they are available in “easily digestible” formats Total lengths PP1/Cooling plants

4. 5 Nov 2008P. Tropea4 Piping – 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 plants For Pixels: bundle of pipes are 12 mm ID all along the path PP1/plant Quality 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 qualification In 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: C12200 Filler material: Silfos 5 (AWS B-CuP3) (no flux brazing paste)

5. 5 Nov 2008P. Tropea5 Piping – 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