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EDM Fast Start PresentationWBS 11 – Assembly and Commissioning
Vince Cianciolo, Paul HuffmanMay 23, 2006
EDM Fast Start, WBS11 2
Schedule Overview
• Fully tested B-shield
• Fully tested CV/liquifier and coil pkg.
• Fully tested insert• Fully tested 3He system
• Assemble/commission B shield
• Assemble/commission coil package into CV
• Assemble/commission insert in CV
• Assemble/commission 3He system in CV
• Re-install B shield upper half • Mate neutronics • Commissioning run• CD4/data collection :-)
EDM Fast Start, WBS11 3
Significant Planning Assumptions • Internal cryostat components arrive fully tested at cryostat assembly site
– Measurement cell insert– 3He injection and purification system– Coil package– All related DAQ components
• This is hugely important. The full apparatus will require 6-8 weeks for a cooldown cycle and this dominates cost and schedule. As much as possible testing must be done prior to assembly, in parallel and in smaller cryogenic vessels.
• Require ability to test 3He transport w/o external shield– Otherwise grossly inflates cooldown/warmup cycle time, and mandates lots of
handling for delicate shield pieces.• M&S costs included in estimates for various subsystems (not in this WBS)
– Rails and other infrastructure equipment– Helium– Tools
• NCSU is the cryostat assembly site– Cost totally dominated by technician support (nearly 4 FTE years)
• >$300k labor savings if done at NCSU• Balances against shipping, disassembly, re-assembly, extra infrastructure
– Assembly requires continuous presence and expertise of the cryostat team for ~ 2 years• Probably significantly longer if apparatus and team not geographically close
EDM Fast Start, WBS11 4
Gantt ChartDuration – 38 months
Test coil pkg in CV (NCSU)
Test insert in CV (NCSU)
Test 3He system in CV (NCSU)
B-shield installation (FNPB)
Test entire apparatus at FNPB
Schedule dominated by repeated cooldown/testing cycles
EDM Fast Start, WBS11 5
Milestones
Subsystem inputs
Assembly and commissioning deliverables
EDM Fast Start, WBS11 6
Critical Path
• Cryostat vessel• Whichever subsystem will be the first to
install– Seemingly the coil package
• Not the B-shield, which is only needed more than two years after the start of coil package assembly into the cryostat.
EDM Fast Start, WBS11 7
Schedule Risks/Uncertainties
• Cost and schedule is totally dominated by the number of cooldown cycles required for successful commissioning:– 3 for coil package– 4 for insert– 3 for 3He components– 3 for integrated tests– 2 for commissioning run w/ beam, B-shield
• These estimates (sorry!) really are WAGs because it is impossible to know how long it is going to take to diagnose a problem.
EDM Fast Start, WBS11 8
Areas of Interface - Everything
• DAQ• Neutronics and Shielding• Cryostat• Insert• 3He Components• Coil package and shielding• Infrastructure
EDM Fast Start, WBS11 9
Technical (Scope) Issues• Is your scope well defined (yes/no)? Is it
documented? Yes and no.– We have carefully constructed this WBS so that
it only involves assembly and commissioning of fully-tested parts.
• Important that this is understood and agreed to by other subsystems.
– Also, our model currently assumes that external subsystem labor is free or costed by the corresponding subsystem.
• If this is not correct it needs to be fixed.
EDM Fast Start, WBS11 10
Cost Estimates• Work package spreadsheets not complete.• Cost estimate is entirely labor.• Dominated by NCSU and ORNL technician
time:– ORNL – ~2 FTE-years = $400k– NCSU - ~4 FTE-years = $450k– Shipping - $36k
• Pre-contingency estimates.• These estimates (sorry!) really are WAGs
because it is impossible to know how long it is going to take to diagnose a problem.
EDM Fast Start, WBS11 11
Staffing Plans• NCSU (from D. Haase talk)
– People - 5 NC State physics faculty, TUNL technical support (Engineers and electronics techs)
– Key skills - cryogenics design, implementation and testing– Recruitments - need 1 postdoc and 2 cryo technicians– Issue - funding for recruitments
• ORNL– Technicians w/ cryogenic expertise needed– Issue: not currently on staff– Issue: Need to come to grips with operational model for
the experiment, i.e., will ORNL assume general responsibility w/ relatively little involvement by collaborating scientists (“J-Lab model”) or will there be substantial, on-site presence of collaborating scientists (“RHIC model”).
EDM Fast Start, WBS11 12
Procurement Planning• We have structured this WBS element so
that there are no material purchases.
EDM Fast Start, WBS11 13
Issues
• The “62% Rule” is not always applicable:– Hourly rate for NCSU technicians assumes 52*40
hours/year (unlike ORNL, and presumably LANL) in which vacation time is built into overhead.
• To correctly cost things they should be entered as 71.4% or their hourly rate should be upped.
– Another example is an intermittent resource, like a couple of electricians who work for a couple of weeks on the project.
• ORNL, NCSU technician/engineer burdened rates in the spreadsheets are not correct.
• I started this WBS in a fresh file. I didn’t realize it was using a 5-day calendar (apparently now the MSP default). So fractions are not currently consistent with 62% rule.