• Interfaces A-B and B-C drawings are complete, pending final check of adequacy based on Myatt analysis. Action: Mike C. follow up with Williamson.  Assuming OK, drawings for these interfaces can be issued.
• Interface A-A.  Drawings are being modified based on March 22 meeting (eliminate midplane hole, add more).  Release thereafter. Hopefully this week.
  

• The intent is only to remove excess material that interferes with bolt hardware assembly.  It was explained that clearance requirements will be established using tooling, such as simple gauges.
• A concern was raised that material removal must not structurally compromise the winding form.
• Action: Mike C. follow up with Viola to discuss how to minimize this risk.
  

• Ron urged that MC punch list tasks (including new holes and grinding) be pushed with some urgency to keep them off the critical path.
• However, we are still in the process of identifying all the the required tasks  and needed materials.  Steve Langish is coming up to speed.
• Action:  Ron work with Larry for now regarding scheduling of punch list tasks.
  

• We are ordering 1 field period’s worth of bolt hardware (studs and washers).
• We are ordering bolts with extra length to facilitate use of a tensioner should it be necessary, but a concern was raised that the extra length could interfere with tightening of the super nuts in some locations. It was decided to add some shorter-length studs to the order for flexibility.  Action: Larry.
• Are we ordering production quantities of super nuts?  (Not resolved at this meeting).
  

• Will issue without the shims for now, so other procurements can proceed.
  

• Bolt tension test: All the parts are at PPPL, and we are proceeding with tests.
• Shear test:  Part drawings have been received from ORNL.  PPPL will proceed with fabrication. ORNL will test (correct?).
• Pinned shear plate fabrication test. Needed actions:
  
  • ORNL to define geometry requirements for pin connection (hockey puck dimensions, weld area) based on structural considerations.
  • Define prioritized issues for testing, e.g., will the pieces fit together after welding?
  • Provide sketch of test articles.
  • Action: Mike C. follow up with Freudenberg.
    
• Friction-based shear plate.  Backup option needs to be developed. (Wayne)
  

Successful bolt assembly PDR was held a few weeks ago

• Next: Complete above field trials and tests to resolve remaining design issues (shim geometry, shear plate for the bolt-free areas).
• Hold a comprehensive FDR for the MC interface design.
  

• Development of assembly procedures is paced by dimensional control elements. Loss of some fiducials, possibility of winding form deflections are newly-recognized complications.  R. Ellis is leading the resolution of these issues.
• A-A fit-up trials to be conducted in the near future are expected to clarify whether shims can have parallel surfaces or must be tapered, and to clarify what the key issues are.
  

• When do we forecast we will actually be ready to begin MC assembly?
  

A detailed schedule is needed that identifies all the tasks leading up to start of MC assembly, with realistic durations and logic.  Action: Ron.