ITER structural design criteria and their extension to advanced reactor blankets

Applications of the recent ITER structural design criteria (ISDC) are illus trated by two components. First, the low-temperature-design rules are appli ed to copper alloys that are particularly prone to irradiation embrittlemen t at relatively low fluences at certain temperatures. Allowable stresses ar e derived and the impact of the embrittlement on allowable surface heat flu x of a simple first-wall/limiter design is demonstrated. Next, the high-tem perature-design rules of ISDC are applied to evaporation of lithium and vap or extraction (EVOLVE), a blanket design concept currently being investigat ed under the US Advanced Power Extraction (APEX) program. A single tungsten first-wall tube is considered for thermal and stress analyses by finite-el ement method. (C) 2000 Elsevier Science B.V. All rights reserved.