NCSX VACUUM VESSEL PL Goranson

1. NCSX NCSX VACUUM VESSEL PL Goranson Man Access Port /Lateral Supports Final Design Review November 17, 2005

2. NCSX Talk Overview • CHARGE • STATUS • BACKGROUND • PUMPING PORT / LATERAL SUPPORT CONCEPT • DRAWINGS • ANALYSES • CONCERNS • CHIT RESOLUTION • CONCLUSION

3. NCSX Charge 1. Is the design of the VV lateral support system adequate for normal, fault, and handling loads, including upgraded first wall and a full complement of diagnostics? 2. Do the supports have adequate capability and adjustment to facilitate field period assembly, final assembly, and motion during cool-down and bake-out? 3. Is the personnel access port adequate for initial operation and maintenance? 4. Are the interfaces with other systems (primarily the mod coil shell and cryostat) adequately defined? 5. Are the analyses complete and documented, including stress in the port assembly and heat leak to the mod coils? 6. Are the design drawings adequate for procurement?

4. NCSX Status-Drawings & Other Design Req. Drawings Name Status SE121-130 Man Port Assy Issued SE121-131 Man Hole Port Weldment Issued SE121-132 Port Cover Modification Issued SE121-133 MCD Flange Modification Issues SE124-073 Lateral Supports Weldments and Details Issued DACS Related documents • NCS-CALC-12-007-00 Design Basis Analysis VV Structural Analysis/Seismic Analysis • NCSX-CALC-12-008-00 Lateral Support Bracket Analysis • NCSX-CALC-12-009-00 Man Access Lateral Support Bracket Analysis New,analysis is complete, DAC is being checked. CHITS Outstanding chits from FDR resolved

5. NCSX Background • Decision to delay Neutral Beam Transition Duct (NBTD) left no pumping duct or man access into VV • NB port cover not removable from outside • Port 4 would give inadequate conductance for pumping • Special mod kit on NB port cover required to react lateral loads • Cost effective replacement for NBTD was desirable

6. Original Proposal NCSX Pumping port duct concept proposed for replacing NBTD had problems • Did not significantly reduce cost compared • to NBTD • Did not provide man access • bolts only accessible from inside VV • needs transition joint

7. NCSX Man Access Port Concept • Splits original duct concept into two • parts • - interface duct supplied by WBS 12 • a pumping duct by WBS 2 • Electrical breaks part of pump • interface

8. NCSX Man Access/Pump Port Design 21” access duct on NB ports, accessible from outside - uses commercial SS wire seal flange - flange is interface for cryostat boot - can be retrofit onto NB blank-off port - body is Inconel to permit 350 C bakeout

9. NCSX Lateral Support • Same components and • location as NBTD design • Loads are the same • Analyses documented for • mount • - stresses are low • - DAC in work

10. NCSX Cryostat Interface • Present wall interface interferes • Cryostat penetration at NB port needs to opened up to accommodate Man Access port • Flange clears wall • Supports lie within • outer boundary • 27” flange perimeter is • Cryostat boot interface

11. NCSX Sheet Metal Cuffs • Neutral Beam port requires sheet metal “cuffs” to retain fabric boot. • Cuffs are shown • welded in place • Fabric boot is not shown • for clarity • The cuffs will be cut to • required shape from flat patterns developed from • solid models • Cuffs do not bridge electrical • break

12. NCSX Assembly Drawing

13. NCSX Port Weldment

14. NCSX Weldment Details

15. NCSX Port Cover Modification

16. NCSX Wire Flange Machining

17. NCSX Lateral Support Parts

18. NCSX loading • Model fixed at vacuum vessel flange • Standard earth gravity applied • 6000 lb applied normal to lateral support bracket

19. NCSX Stress Intensity (Tresca)

20. NCSX Deformation

21. Drawing for Large Diameter Ports NCSX Typical heat tape and thermocouple installation philosophy covers NB port as well. Heater routing is detailed as part of heater assy drawings.

22. Concerns NCSX • Wire seal flanges from MDC may not meet permeability requirements • - VV conflats had to be replace with Trinos 316LN flanges • - special order on these flanges could be price and schedule problem • - need to verify permeability and/or determine compromise maximum value acceptable before purchase

23. Chit Resolution NCSX • CHIT • Man access port design basis analyses and interfaces (e.g. w/cryostat) are incomplete. [Reiersen] • Analyses are complete. ICDs will be updated under another broader review • Check on requirements on location for insulating breaks in personnel access part and pumping duct. [Reiersen] • Port does not have break but pumps may at their isolation valves. Not part of WBS12 • Verify that budget and schedule activities for personnel access port is in the project baseline. [Reiersen] • Budget and schedule covers the port with 54K$, under 124-130. • There is additional budget at pppl for lateral support fab. • Need to coordinate with the Cryostat folks and make sure they can interface with the Man Port. Also work with the pumping duct folks to verify this meets pumping interfaces. [M. Cole] • Duct size was pre-approved by WBS2 before design. WBS6 approved provided port flange extends past Cryostat wall, which it does. • Determine whether the man access port will be used for pumping prior to procurement of all three covers blankoff cover. • A. Yes it will. 2 blanks and 1 with a hole. [B. Nelson]

24. NCSX Conclusion • There is documentation work remaining but nothing that will hold up procurement. • The review charges have been met. • A reduced cost port has been designed which can provide interface for pumping • and/or man access into the VV • It will interface a boot for the cryostat • It is designed to be compatible with 350 C bakeout so it can bridge across MIE • operation into future upgrades • It provides mounting provisions for the lateral supports without change in their • design • Compatible with MC insulation seal concept • No changes in I&C or Heater tapes