From:	Lawrence E. Dudek
Sent:	Thursday, March 17, 2011 3:16 PM
To:	NSTX Center Stack Upgrade Team
Subject:	Notes from the 3/16 Project Meeting
Attachments:	Calc_Status_031611AM-RTS.xlsx; ATT456414.htm

Notes from 3/16/2011 Meeting:
Calc Spreadsheet
Updated spreadsheet attached.  Calc#30 may be able to be eliminated if enough detail is 
included in Han's outer TF leg calculation. 

Update on  (Zhang) (see VGs)
Outer leg analysis was updated to more realistically reflect the actual design.  The coils are well 
restricted now because the tie bars are much stronger compared to the previous spring 
arrangement.  This will result in lower stress in the outer legs but higher loads in the clevis 
connection.  Stress in the umbrella is much lower than before, less than 16 ksi.  Stress in the VV 
is less than 15 ksi.  The splice tabs between the dome ribs and VV are also acceptable.  Coil bond 
shear stress is higher but within allowable at 2.3 ksi.  Clevis weld stresses are also acceptable at 
16.5ksi.


Update on the PF4/5 Support analysis   (Titus) (see VGs)
The analysis of the PF4/5 supports was updated.  The weld stresses to the VV are 
acceptable with the addition of a visual weld inspection .   

Thermal Modeling of the OH Coaxial Bus (Mardenfeld) (see VGs)
The OH coaxial busswork has been modeled to asses the current density and 
temperature rise.  The temperatures look acceptable and ratchet up to approximately 76 
C without any application of cooling.  

Viewgraphs will be posted by B. Simmons at:

http://nstx-upgrade.pppl.gov/Project_Meetings/CenterStackUpgrade/index_Meetings.htm