Informal Memo

Date: 18 Aug 1995, Rev A (21 Aug 95)

Subject: Engineering Group Conference Call Minutes, 16 August 1995

To: Starlite Engineering Group, C. Bathke

CC: J. Davis, B. Dove, S. Jardin

From: L. Waganer

Participants: M. Billone, D. Lee, G. Sager, D. Steiner, D-K Sze, L. Waganer, C. Wong

The purpose of the call was to have a group understanding of the level of effort that would be available to apply to the Demo design and exactly what could be accomplished. The level of effort question could not be definitively answered due to the uncertainty of the FY96 budget. ANL will apply some effort toward the design and analysis of the blanket and the tritium system. Mike Billone noted that he was out of budget until the FY96 money was authorized. MDA will continue to support the program management, maintenance systems, systems analysis, and design integration with some added support in the area of design of the blanket, vacuum vessel, and structural support (i.e. D. Lee). GA will continue to support the project with design and analysis of the PFC/divertor system and safety and hazard analysis with some support in the area of thermal conversion and blanket design analysis. Univ. of Wisc. will probably support the project (Per D-K Sze) with design support (I. Sviatoslavsky), neutronic and shield design (L. El-Guebaly), activation analyses (H. Khater), and structural and disruption analysis (J. Blanchard). Raytheon may continue to help in the area of safety/licensing and RAMI. RPI will continue to support Project Management and Safety/Licensing. UCSD will support Project Management, CAD work, and H&CD system design. And INEL will support the safety, licensing, and hazard analyses.

The group affirmed the need to reach known design milestones approximately every three months in order to have a consistent and well-developed design. At the October project meeting a consistent "conceptual" design approach should be ready to present to the project team. During the next three months following that milestone, the group will work toward improving the state of the design toward a preliminary design. The next three months will continue design improvement, reaching a "final" design stage in the summer of 1996. This will form the basis for the final Starlite Demo design report that will be written during the final three months. These design phases do not fit the classical definition, but the purpose is to have known, complete designs at each step of the way, improving toward the comprehensive design at the end of the project.

To make sure the Engineering Group will present a unified, consistent approach in October, we would like to meet in Champaign-Urbana, Ill prior to the IEEE meeting for an afternoon engineering session. The intent to is present some preliminary sketches to illustrate the blanket, support structure, and vacuum vessel that will accomplish the desired maintenance scheme. That maintenance scheme is envisioned to be fixed TF coils of the geometry specified by C. Bathke, some of the outer PF coils could be raised/lowered while cold, and radial movement of the blanket and the outer shield. The group would like to ask C. Bathke to provide some insight as to the cost advantage of subdividing the outer (and inner?) blanket and shields for maintenance with just radial and a combination of toroidal and radial movement. ( I know this was done before for PULSAR. Is that still reasonably close to the RS case? Let us know if this is a difficult job.)

At present, we will assume the lifetime of the divertor is similar to the blanket and the divertor will be replaced with the entire FWBS module. General requirements for the PFC is using the same materials and coolant as the Blanket. Maximum heating is 5 MW/m2, double null divertor, no protective armor, and bare tubes. Lifetime is 5 years and/or 5 disruptions.

The design approach will be similar to that of the ARIES II. D-K Sze is mailing out the copies of the ARIES II engineering section. We need the definition of the stabilizing shell shortly from the Physics Group. We also need the First Wall size requirements for the H & CD systems from TK Mau. D-K. Sze will function as the keeper of the Blanket design information, Laila as the shield (and vacuum vessel?), Clement as the PFC, and Leslie as the Magnet. Keepers of other system definition is TBD.

There will not be another Engineering Group call before the Project CC on 30 Aug. (Note, the Physics Group call is scheduled for 29 Sept).