From:	Lawrence E. Dudek
Sent:	Thursday, September 09, 2010 4:27 PM
To:	NSTX Center Stack Upgrade Team
Subject:	NSTX CSU Project Meeting  notes from 9/8/2010
Attachments:	eng033.pdf; ATT1779483.htm; M - 42 - Macro.jpeg; ATT1779484.htm; 
M - 46 - Macro.jpeg; ATT1779485.htm

Notes from 9/8 Meeting:

		
Status of the FSW Tests at EWI  [Chrzanowski ]
Jim reported on the latest tests of the FSW trials being performed at EWI.  Photomicrographs of 
the welds that the mechanical tests will come from.  Both types look very good.  The M42 weld is in 
CDA10700.  The M46 weld is between CDA10700 and CDA18150.  The bright areas are small grain size 
regions and that there is no lack of fusion adjacent to the overlap of the two weld passes. The tensile 
tests in the cross-weld direction have been pulled.  They all failed in the softer base metal.  In the CDA 
10700, the weld area necked much less than the base metal, causing a bulge in the middle of the 
specimen length.  In the dissimilar weld, the weld and the hard side had about the same deformation, 
while the soft side necked extensively.  EWI will knock off the bend specimens and then provide you will 
the full mechanical results.  EWI will be issuing the written report by the end of September.

 
Progress on Disruption Analysis analysis [Titus (see VGs) ]
Photos taken during fabrication indicate that welds holding the brackets to the 
VV wall may be larger than the 1/8" that was required on the drawings.  The 
code requires larger weld sizes for the VV plate thickness, may be a problem 
to qualify unless we can produce some testing with the 1/8" weld to qualify our 
process and welders.
ACTION: Jim C. to lookup the run copy of the installation procedure to see if there is any notations 
indicating deviation of weld sizes.

Calculation progress, checking [Titus (see VGs) ]
Provided a spreadsheet listing the calculations required to complete the design verification and noted 
where some still need to be completed and/or checked.  All calculations need to be provided 
with a calculation cover sheet which provides enough information that permits 
it to be repeated in the future.  See attached ENG033 "Design Verfication" 
procedure for the cover sheet form and more information.