NCSX Procurement Update of 2/23/05

1. MCWF procurement

• Upgrading of the C-1 casting continues, with welding operations in progress. Overall, welding on Coil C1 appears to be more extensive than originally anticipated and planned based on upgrades required on the prototype.  As a result, Metal Tek now estimates that they will ship C-1 the week of 3/6/2005.
  

• A revalidation of the flow solidification analysis for the Type C pattern was performed, applying different assumptions about about the alloy than the original analysis.  The results more closely paralleled the actual C1 casting problems encountered.   After further iteration, the pattern will be modified.
  

• Lawton has recommenced work on the A pattern. The A coil was remodeled after a calibration was performed with alloy parameters adjusted to approximate the actual performance on the C1 casting.   Lawton is working on the modeling of 2 of the core boxes that need to be modified due to the changes in solidification modeling.
  

2. VVSA procurement

• Major Tool continues to machine the dies. Two more sets of dies came in last week.
  

• The weld fixture for the 60-degree half-period weldments is in final design. Design improvements have been made to facilitate access during welding and removal afterward.
  

Hutch Neilson