the wa105 17m3 larcryostat pre-experience m.ne. status tender done for the membrane part, 1 german...
TRANSCRIPT
Status
• Tender done for the membrane part, 1 German firm selected• A lot of time wasted to renegotiate the price and the
deliverables• Order still not out because the various lawyers are still
discussing some final details• Engineering of the warm container ongoing. Firms are now
consulted• Goal to have it installed by March 2015
Some dimensions• The final inner volume is 3*4.8*2.4 (height*length*width): 35m3. The
volume of LAr stored is 1.5*4.8*2.4: 17m3.• Tank capacity (LAr volume) : 17 m3
• LAr level : 1.5 m from bottom• Minimum liquid level for pump restart : 0.7 m (indicative)• Residual Heat Input (RHI) : 5 W/m2• Insulation density : 70 kg/m2 (PU Aged HFC245)• Insulation thickness : 1 m (as computed by GTT in order to fulfill the
required RHI)• BOR : 0.069 % (Calculated for indication)• Design pressure : Max 1050 mbar / Min 950 mbar• Design / operating temperature : 77 K / 87-89K
COST
• WE have just contracted the membrane cryostat and not the warm container
• Costs: engineering, firm overhead, licences : 150Keuro ~ 190 K$ material (including transport) : 127 Keuro ~ 163 K$ installation at CERN + tests : 291 Keuro ~ 375 K$
Assuming a surface (without cover) of ~ 55mq
Material 3K$/m2 Installation 6.8K$/m2
Documents:
• Technical specs: https://edms.cern.ch/document/
1365672
https://edms.cern.ch/document/1369869
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The outer structure
Overview
Steel profiles bolted and welded together
The internal dimensions
6.5m x 4.2m x 4.1m (L x W x H)
Weight - 12T
Modular Design i.e. allows possibilities for future extension