Notes from SR integration meeting 29/11/01 ========================================== 1.) Services routing from racks to assembly area and test area - Richard currenly working on rack layout in rack room. Length of cables should be limited for cost reason on some type of cables (LV,fibres) - power cables, fibres to be routed under floor. Question where they enter assembly area. Proposed to have a rack at that place to hold cables and cover hole in floor. Size of these openings: SCT: PIX: TRT: Location assembly area: SCT: PIX: TRT: Location test area: SCT: PIX: TRT: - other services( cooling pipes, gases) have 3 openings along the long side of the room (roughly equally spaced). Size for these openings to be defined (SCT: 3x 80x80cm, TRT: PIX: ) ---> Action on Christoph,Heinz, Marko: define openings 2.) Rack space & cooling racks available 3 x 11 1 x 16 1 x 16 - 4(ventilation) racks each 60x90cm foot print. Total of 100kW available of rack cooling. Joaquin needs rack layout to estimate plumbing costs. 3.) Power to building: Limited to total of 300kW (hard limit) SCT: 120kW (excl. cooling) PIX: <= 50kW TRT: 1 full EC (power to be determined) cooling: 35kW ventilation: ? 4.) Rack layout: Richard currently working on. Need to find additional space for a.) UPS below floor may cause vibrations and noise. Question: Can it go outside? b.) HV-Xray power supply: approximately 1x1x2m3 , 500kg c.) compressor, pumps,compressed air, vaccum pumps: can they be located outside? If yes where? ---> Action on Richard: prepare first draft layout for rack location. 5.) Nitrogen: SCT and PIX will use N2 for dry environment. plan on using 12-bottle rack, resupply 2x per week. Nitrogen needs to be circulated to limit consumption. 6.) Floor: reinforced floor: for TRT plan on 300m2 the floor will be covered with anti-static cover in assembly room but this cover needs to be grounded. Anti static cover also in test area? Need to define electrical grounding: Proposal from SCT: make two larger Cu-rails on each long side of the assembly area. One of them to be used as clean ground (e.g. for detector electronics,...), the other one as dirty ground (e.g. for anti-static cover, ...) ========================= Previous meeting ================================= Next meeting will be Thursday 29.11 at 9:00. Meeting room to be announced. Here are the minutes from last meeting with updated questions to be addressed this week. Let us cover the following points : (1) General news : From CE and ventilation. Panels are ordered, frames by February (roughly). UPS can possibly be installed in basement, need electrical connections before moving in. The ventilation units need to be installed in the basement at a certain point in the Spring (April/May?) before closing the floor. (2) Floor - there are still some concerns about floor-loading in specific areas and what the 500kg/m2 spec means in practise. Present understanding : - The floor tiles take 500 kg/m2. However, in case of have a heavy table or tooling, bear in mind that the floor structure can take more than 2000 kg per column. If moving things around (other than hyperheavy) follow the floor beams. - There are tiles which can take up to 2000 kg/m2. These cost around 180 CHF/m2. The cost of reinforcing the entrance to the testarea, the TRT side, (100m2), a corridor from the door towards the test area (3-4m wide) and possibly a 30-40m2 area in the TRT corner close to the entrance, would be around 40k. - Concerning the anti-static flooring, to avoid punching/tearing when moving the loads, we need to specify the diameter of the wheels and the load they carry. How is it put on, rolled and glued ? - The CMM machine from Milano (and other static elements?) is believed to be installable as outlined by Joaquin and supported with props from the basement. From Henri: An estimation for a paving stone of 4m2 isolated against the vibrations for the CMM machine is at about CHF 5000.-. To set up the marble, we can make it before closing walls in front of the main entrance which will be condemned, and to put a protection for the continuation of the works. When is machine ready and when should the machine itself be moved in ? Actions : Geoff and Richard talk to Henri about antistatic floor, grounding, edges between panels, and re-inforced panels in certain regions. How much should we foresee in the budgets for stronger panels in a few areas. They should also understand what is meant by paving stone and marble. (3) Water cooling of the racks. The model is mixed water in a closed cicuit, using chilled water to a heat-exchanger in the primary loop. The best estimate is 65k + (any extra for chilled water?). From Joaquin : Concerning the chilled water cooling, there is some power available. The final capacity depends on the options etc. etc. so for the time being I have no figure to give you. As soon as the whole thing is ordered I'll know how much is left for you. However, do not forget what I told you about using chilled water (CW): there may be condensation on everything. Insulation will work for piping but your own components cooled with CW can have condensation on the surface. I suggested using mixed water, which is water heated up to just above the dew point temperature (I made an estimate eons ago, I think it went to some 65 kCHF). Just keep this in mind. Update : A cheaper system can be made consisting of a mixing of chilled water and the water returning from the rack loop. The primary pumps will be used in this case (10-15 kW). For the plumbing an estimate of 100-150 kCHf per meter is reasonable including material, fitting and manpower. A used system with can handle the load of 50kW can be found. It will cost us to move and re-install, the capasity is on the low side but can be increased if we accept a higher delta T. I believe we should use this system if available to save money. Present understanding of loads : One rack (example SCT LV) is 6kW out of which 4.0 kW is lost/used in cables and on the detector. The rack cooling should therefore aim to handle the remaining 2.0kW per rack. Assuming we have around 30 racks with this load we end up at around 60kW. In addition the cooling systems need a water supply. It seems reasonable to plan for 100 kW for the primary circuit. The air-condition in the rack room can handle around 50kW. Actions : Jan G to look at what is the best solution and to clarify what is needed for the cooling units. We should decide of the system mentioned by Joaquin is fine. (4) Racks. We have around 60 ex DELPHI racks stored at CERN. We need to specify the exact number needed plus placement in the SR rack area plus cooling and electrical connections. Chris Parkman is our contact concerning refurbishment plus repair of the racks. I have asked you to include 1500Chf/rack in the operation budgets and this has been done (but need to be checked). I will be the contact to Chris (for the moment). We need space to refurbish (Steinar to ask Marzio), 150m2. Present understanding : 20 for SCT, 6 for PIXELs, 5 for TRT. How many are LV and how many RODs. We also need to understand the cooling needed for them; i.e extra fan units. Gas : Active 342x62cm2, same for CO2/N2 assumed. Evaporative modelled from HALL 175, including control. Assume 2 regulator racks. Monophase warm : 1400x600x2100(h) mm3 Monophase cold : Assume the same. For UPS see appendix. Action Richard : Floor layout now needed. He will need to chase everybody about the detailed rack layouts to make sure the loads are understood. (5) Piping and cooling plan installation (Pierre Bonneau). I have asked SCT, TRT, PIXEL to include 40,15,15 kChf in their operation budgets for this work, plus the cost of the piping, insulation, and manifolds for each system, and I have talked to Pierre and Jan about what manpower is needed. This would correspond to around 1400 hours of manpower next year. We will need to complement this with personel from the institutes to prepare and bend the pipes, and this might mean that we can reduce the need for Pierres guys. They should be used for the most delicate tasks but in general we should use our manpower as much as possible to reduce the load on PF and SB. There is also quite some work need to determine the exact position of the local manifolds. This work will take place in second part of 2002. Present understanding : Pipes : The present estimate is that we need around 50-60 circuits for the SCT (but only 25 by middle of 2003?) and 10 circuits for the PIXELs. One system is needed into assembly area, one for test-area. Each system consists of : One circuit is needed for the fluid, one for active gas and one for cooling gas. We need to understand in more detail how much is needed for the TRT in the end (2004). The costs of the pipes, insulation, heaters if needed, joints, etc must be accounted for in the operation budgets. Estimate from Pierre Bonneau : Here are the price for the piping between the compressor unit and the distribution rack. On liquid side we used 50m O26/20 and it's 7 CHF/m. On the gas side we used 50m O50/42 and it's 20 CHF/m. Add around 10 CHF per fitting on O26 and 35 CHF on O50. Jan also reminded us that we must think about the cable cooling - on the other hand less than 5 kW is expected to be lost in the cables (dominated by the SCT where half the modules will lose around half of what they lose in the real experiment (the cables are shorter)). Actions Jan G : Check material compatibility pipe, cooling, structures. (6) UPS (see appendix below). For the cooling plants we need around 30 kW and in particular for the thermal screens we need a UPS. Same for parts of the gas distribution and the DCS. If the LV is also on UPS we need around both pieces mentioned below. In addition Georg has a much smaller device from DELPHI (in one of the pixel racks mentioned above). The cost would be equivalent of 2 man-months and new batteries at some point. We decided to go for these units but we need to understand the battery price first. Richard to chase. They can only be moved when electricity is installed. (7) Gas/fluids/safety : See Geoffs summary from August 22 in appendix 2. This is fairly complete in term of gas/fluid requirements. We need however to start working on the gas-distribution from the supply to the detector setup (linked to layout of the rack-room). Open action : Someone need to follow this. Summary of gasses from appendix (check by Thursday) : Nitrogen at -10, 6m3 per hour, 100 days a year. Helium : small flow (req. from PIXELs - clarify). Ar/CO2/CF4 : 5 m3 per hour (?? days a year). C02 envir. gas : 1 m3 per hour loss (?? days a year). C3F8 in closed system, C4F10 the same. Dry air ?? (8) Vibrations : Noticed in the building. How large, and from where ? We need to find out. Richard to chase. Geoform equip. avail. next week. Related to activity outside, Richard to co-ordinate with Joaquin. Best regards, Steinar Appendix 1 : UPS. ------------------ En fait il s'agit d'un UPS 40KVA type siemens B3124 - K n? B 89103 40KVA input 3*380V/95A output 3*380V/60A batteries LECLANCHE 18 PA1260 , 108 elements, 216V (datent de 1998) remplacement peut-etre a prevoir Nous en avons toujours assure la maintenance sur code client OPAL La documentation existe. L'onduleur sera entretenu cet hiver (code ATLAS?) et peut rester sur place. Nota: Un UPS identique de 60kVA est installe au SX4 et est sans doute aussi en reserve (ex.proprietaire ALEPH) Pour avoir un devis d'installation , vous pouvez contacter directement M.Maliba au 77033 Gerard ------------------ >From Richard Fortin, nov. 08, 2001 Visit with Gerard Cumer 16-0592 Siemens-Albis 60 KVA UPS in building SX4 -Installed in 1987 for ALEPH -Actual batteries manufactured in 1994 -Runs on 30 Leclanche "SP110" long life cells (10 years?) -Gives 38 minutes of full backup power with good batteries -Power distribution rack "ORION" should come with it -Dry contact controls -Still being used Previous people in charge: Beat.Jost@cern.ch (Aleph) 164191 Jean-Pierre.Droulez@cern.ch (Aleph) 160931 Jean-Paul.Fabre@cern.ch (Aleph) 160532 Cost and time estimation: -1 week to disconnect, disassemble and deliver -2 weeks to build a mounting platform, reassemble, connect and test -Yearly maintenance costs approx. 2kchf -Transport is extra Price and delivery for new batteries from LECLANCHE has been asked for. Size of equipment: UPS 120 width x 85 depth x 180 height [cm] Batteries (3 racks) 60 width x 85 depth x 180 height [cm] ORION rack 60 x 60 x 180 [cm] Siemens-Albis 40 KVA UPS in LHC PA6 -Installed in 198x for OPAL -Actual batteries manufactured in 19xx -Runs on 18 Leclanche "SP110" long life cells (10 years?) -Power distribution rack may not be available -Dry contact controls -Could not be accessed due to LEP dismantling Cost and time estimation: -Same as above, but may come without the power distribution rack. Size of equipment: UPS 120 width x 85 depth x 180 height [cm] Batteries (2 racks) 60 width x 85 depth x 180 height [cm] Person to contact: Alasdair.Smith@cern.ch (Opal) 160028 Appendix 2 : ------------- From: "Tappern, GJ (Geoffrey) " To: "'Jan.Godlewski@cern.ch'" , "'Charles.Nuttall@cern.ch'" , "'olcese@ge.infn.it'" , "'Heinz.Pernegger@cern.ch'" , "'Richard.Fortin@cern.ch'" , "'Henri.Rigoni@cern.ch'" , "'steinar.stapnes@fys.uio.no'" Cc: "'G.Tappern@rl.ac.uk'" Subject: Draft Minutes of meeting on SR Building gas. Hi, Can you please check these draft minutes quickly. Heinz can you add/complete the SCT figures please. Minutes of meeting held on Tuesday 21st August to discuss gas and fluids in the SR building. Present:- Bill Nuttal (TIS), Geoff Tappern, Jan Godlewski, Heinz Pernegger, Richard Fortin, Henri Rigoni Apologies from:- Marco Olcese, Steinar Stapnes. Copy to:- Gianpaolo Benincasa. 1/. Air conditioning of the SR Building drawing number LHCU21750015 was used to explain the expected fluid and gas usage in this building. It was especially pointed out that this building has a basement area which covers the whole building. This basement area is approximately 2 metres high and there are access positions. This basement area is used for the routing of cables. When the SR building Inner Detector "clean rooms" are built the basement will also house some of the air-conditioning equipment and trunking. It is expected that during the use of the building for the Inner Detector the basement area will be used often to route cables and pipes. 2/. Pixel use in assembly area and test area:- Nitrogen at -10C approx 1.2m3/hr C3F8 54g/s at 7 bar, and -10C. Helium - small flow. 3/. TRT use in the assembly area and test area:- Ar/CO2/CF4 mixture with a gas flow of a few (Steinar:5) m3/hour. It is to be an open system with exhaust pipe to outside of the building. Leak rate (Steinar: inside building) max 2 litres/hour. CO2 ventilation gas. Leak rate possibly 1 m3/hour. Watch carefully CO2 as 5% concentration can be toxic. No xenon will be used in the SR Building. Steinar : C4F10 for monophase ? 4/. SCT use in the assembly area and test area:- Nitrogen at -10C approx 5m3/hr C3F8 --need to find in mail------ at 7 bar, and -10C C6F14 (thermal screens) in the rack area no more than 10kg and in liquid form anyway. 5/. C3F8 evaporative unit in rack room:- Volume of tank is 107 litres (approx 140kg). Pipework to test area will carry approx 4kg assuming 10 pipes 30 metres long with 3mm inner diameter. Assuming something for staves and return lines approx 10 kg in assembly and test area. Clearly the tank is the likely problem region. It was highly recommended that the tank be in tray with gas monitoring and vented to the outside. The more this tank could be enclosed and vented to outside the better. Check on noise level of compressor unit. 6/. Basement area:- Gas detectors (Oldham) must be installed and these would be connected to the level 3 alarms. Smoke detectors should also be installed. Note that all cabling and pipework materials must conform to the CERN safety standards (Number 23 in case of cables). This applies to all temporary cables as well. All pipework in the basement area must be welded or soldered - no connectors which require tightening or plugging in. 7/. Other comments:- a). Any solvents must be stored in safety cupboards. b). Ensure anti-static mat/carpets are continuous (not floor panel size) and comply with fire regulations. See Marc Tavlet if tests required on samples. c). All gas bottles must be stored outside in gas bottle building/shed. d). Smoke detectors in all areas. e). Check that if inner clean room is installed that room conforms to safety standards (fire exits?). See Didier Weber. f). Access to Inner Detector area suggested to be by swipe cards. 8/. Conclusion of meeting was to let the tender proceed as the only potential problem area was the C3F8 tank and this could be dealt with later as a small modification/addition. Clearly the extract system proposed would have an impact on where the evaporative plant was placed in the rack room. Geoff Tappern