Oak Ridge TNS/PEPR Program is considering modified physics and engineering criteria to ease remote maintenance problems
Early work on TNS/PEPR at ORNL consisted of systems trade studies to establish a baseline design. Representative parameters are shown in Table 1. Development of these parameters into a mechanical design focussed on the complexity of the device disassembly. Three modifications to the physics and engineering criteria are being studied to ease these problems of remote disassembly: (1) Increase allowable field ripple from 1% to a maximum of 3%, thereby reducing the number of TF coils. The result is increased access between coils. (2) Provide sufficient clearance in the bore of the toroidal coils to raise and lower the EF coils during torus segment removal. This assumes a requirement for equilibrium field (EF) coils close to the plasma. (3) Investigate a secondary vacuum enclosure (e.g., vacuum building concept) to eliminate the need for welded torus joints and TF coil dewars. This paper discusses these modifications, as well as some overall cost implications relating to ripple.
- Research Organization:
- Oak Ridge National Lab., TN (USA)
- DOE Contract Number:
- W-7405-ENG-26
- OSTI ID:
- 6984968
- Report Number(s):
- CONF-780508-21
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700200* -- Fusion Energy-- Fusion Power Plant Technology
700209 -- Fusion Power Plant Technology-- Component Development & Materials Testing
COST
DESIGN
ELECTRIC COILS
ELECTRICAL EQUIPMENT
EQUIPMENT
MAGNET COILS
MAGNETIC FIELD CONFIGURATIONS
MAGNETIC FIELD RIPPLES
MAINTENANCE
REMOTE HANDLING
SYSTEMS ANALYSIS
THERMONUCLEAR REACTORS
TNS REACTORS
TOKAMAK TYPE REACTORS