PARTICIPANTS: Sze, Billone, Dean, Wong, Sager, Herring, Bathke, Waganer, Jardin, Hofer, Steiner, Miller, Najmabadi, Mau, Tillack, El-Guebaly, Dove
The minutes for the 31 May Conference Call have been distributed. Just remember to plan for the next project meeting, at UCSD on 2-4 August in conjunction with the Utility Advisory Committee meeting on July 31-Aug 1. Najmabadi is to investigate the possibility of commencing the Starlite project meeting to immediately follow the UAC meeting on the afternoon of Aug 1. The Starlite meeting is to conclude on Aug 4 at 11:00 for the convenience of the east bound travelers. The next conference call will be on Wed June 28 @ 11:30 CDT.
Slight change of address: All MDA fusion personnel will be moving June 21-22 to a new company location All phones/faxes/PO boxes will remain the same, but our internal mail code will now be MC 106 7211 and our Fed Ex (or equiv.) address will be:
Name - MC 106 7220 [ Revised 6/27/95]
McDonnell Douglas Corp.
McDonnell Blvd. - Dock 106
Berkeley, MO 63134
Les Waganer was assigned to gather the inputs and assemble the quarterly report for publishing has not had time to devote to it yet. Mike Billone has accepted the assignment for pulling together the Ferritic Steel Assessment report. Also the rationale for the vanadium structure selection needs to be documented. To that end, Mark Tillack put together an outline for the Vanadium Structure Assessment for the Demo along with writing assignments. S. Herring was asked about a safety discussion in the V-Assessment report - it was agreed that Billone and Herring should review the safety and material aspects of the outline and make suggestions as to the necessary changes. The Engineering Group, is to document the perceived advantages/ disadvantages of the various coolants.
From the recent Physics Group Conference call, Steve Jardin reported that there was much progress. C. Kessel has been looking at reverse shear cases with aspect ratios of 3 and 4.5. Dave Ehst has been examining the aspect of 3.0. The P. Group is pushing for a RS strawman case by July 24, thus inputs to C. Bathke is needed earlier to support that final date. [Per C. Bathke, the DROP-DEAD deadline for inputs is 15 July.]
Design Development - Najmabadi wanted the Engr Group to devote their energies for writing up the present reports and assessement assignments and only apply minimal energies to any further new work. We should be ready to start the design at the next project meeting.
C. Wong re-iterated the use of a radiative divertor approach to reduce the maximum heat flux to the divertor. At present the emphasis is on physics consistancy. As suggested by Miller, suitable input will be provided to the system code for scoping evaluation.
T.K. Mau is waiting for the upcoming RS strawman. He is evaluating the current drive requirements including the off-axis requirements. T.K. has been conferring with ITER personnel associated with ICRF launcher system.
D. K. Sze mentioned that the joint from the vanadium to the next metal will be the problem. This will probably occur at the IHX.
D. Steiner mentioned that Tom Dunn is ready to calculate the release rates for one scenario (ARIES IV). Other scenarios for ARIES IV and II will follow. There is an upcoming Washington DC meeting to review the Safety Study with Herring and G. Longhurst in attendance.
S. Herring provided additional information on the preliminary hazards analysis for ARIES-IV. The accident investigated was a major break of a helium coolant line serving the SiC structure. There is only a 100 degree C rise in temperature due to afterheat and little release of coolant. The release of tritium is the main concern.
G. Hofer noted that his three reports have been distributed and many participants said they had received their copies. He is presently working on the tritium report. There is a major problem that current accounting procedures demand accuracy of very small amounts, but in a large operating fusion plant, the production rate and inventories are not well known. The estimated tritium production has an error bar of 6-7%. This accounting accuracy issue needs to be resolved in the future.
Bill Dove informed the group of the current budget discussions that are underway. It would be beneficial to contact your Congressman to express your views.