1 NCSX WBS-1201-190 HANDLING/SUPPORT UPDATE PLG 7/23/03 STATUS Study is for 120 degree VVSA field period assembly. • Vessel Installation Support Concept Identified. • Vessel Handling Support Concept Identified. • Hard Points and Access Identified. • Preliminary Stress Analysis Complete.
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1 NCSX WBS-1201-190 HANDLING/SUPPORT UPDATE PLG 7/23/03 STATUS Study is for 120 degree VVSA field period assembly. Vessel Installation Support Concept.
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Study is for 120 degree VVSA field period assembly.• Vessel Installation Support Concept Identified.• Vessel Handling Support Concept Identified.• Hard Points and Access Identified.• Preliminary Stress Analysis Complete.
- Hung from vessel top surface bosses and lugs to shell.- 6 point suspension(2 per period).
• Vertical Upward Load- reacted either by outboard lugs at NB ports or- by 6 points on lower surface (2 per period).- choice driven by convenience and magnitude of load.
• Radial and Lateral (toroidal) Loads.- reacted by lugs at NB ports.
Top Suspension Rational• Difficult to achieve 6 points (minimum) on midline with
clear access.• Thermal growth is predictable and easy to compensate for.• Midline mounts would induce large bending moments.• Boss penetrations are simple and equivalent to port
• ASSUMPTIONS– Gravity load on 120 degree field period – Hung from two top hard points– Modeled without ports to save time– Equivalent weight with ports used in model(more
flexible than real case)RESULTS– Stress in wall only 5 ksiREMAINING WORK– Model rerun with ports– Detailing mounts
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VM Stress (Mechanica)
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VM Stress
Clevis #1 Clevis #2
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Geometry• 4 point mount to shell.
– Two inboard upper hard points used for installation.– Two hard points outboard on top.
WBS-1201-190 HANDLING/SUPPORT UPDATE 7/23/03 Vessel Handling Concept Contin.Handling Procedure (abridged version)a. Mount vessel period to fixture using vertical ports, NB port. Install
insulation, diagnostics, etcb. Manipulate coil/shell assys over vessel ends with handler and bolt up to
each other.c. Install 4 vessel hangers and radial lugs at NB port to shell and align
vessel.d. Install TF coils.e. Install port extensions.f. Release vessel from fixture, suspending it from shell.g. Perform field period testing, metrology.h. Transport assembly to site and mate to other period sectors.i. Remove two outboard vessel hangers.