NCSX Memorandum

To: T. Brown, A. Brooks, H-M. Fan, B. Nelson, D. Williamson, M. Cole, P. Goranson, R. Hatcher, C. Neumeyer, L. Dudek, P. Heitzenroeder, R. Ramakrishnan, J. Chrzanowski, L. Dudek, A. Klink, H. Kugel

CC: J. Schmidt, H. Neilson, J. Lyon, S. Hirshman, M. Zarnstorff, A. Reiman. L. Berry, D. Strickler, R. Simmons

From: W. Reiersen

Date: 1/26/2001

Re: Minutes of 1/24 Engineering telecon

An engineering telecon was held on January 17. The purpose of the meeting was to review the scope and cost associated with machine assembly. Chrzanowski had a nice presentation summarizing the above. A number of issues and action items arose during discussions and are summarized below.

1. Chrzanowski included drafting support for the layout of the test cell. This was also included under Design Integration in WBS 8. (Reiersen to resolve)

2. It was not clear what the industrial contractor responsible for the modular / TF coil assembly would be delivering. Would the contractor be delivering parts (21 radial plate/TF coil assemblies and 21 modular coil assemblies) that had been fit up, match drilled, tested, and accepted at the contractor’s facility or will we be doing this for the first time in the TFTR test cell? If the assemblies are pre-fit at the contractor’s facility, how many pieces do we need to break the completed assembly into for shipping? What testing will be required prior to acceptance? This decision would appear to affect where the costs appear more so than the bottom line since the activities will have to be done one place or the other. Nelson indicated that he might have some pre-assembly costs in WBS 1. Perhaps these costs should all be tallied in WBS 72. (Nelson and Chrzanowski to resolve)

3. The subject of welding port extensions was discussed. Manual welding from inside the vacuum vessel appears difficult due to space limitations. Using an orbital welder on circular ports of a few standard sizes appears to be an attractive direction to go. For odd-shaped ports, a bolted connection for the port extensions might be easier to accommodate. (Nelson to address)

4. The subject of whether the field assembly of the vacuum vessel would require bolted or welded joints was discussed. Bolted joints offered many advantages but would require space that might not be available. (Nelson to resolve)

Trim coils were discussed during the course of the meeting. The concepts proposed by Brooks looked more attractive than previous incarnations. Concept development will continue.

Next week will be the NCSX project meeting. There will be no engineering telecon. The next engineering telecon is scheduled for February 7.