DEVELOPING MAINTAINABILITY IN CONTROLLED THERMONUCLEAR REACTORS

摘要

During the period 1 February through 31 March, 1977 the study has concentrated on the selection of availability goals for tokamak fusion reactors and the develop¬ment of time line flow diagrams for replacement of the first wall and blanket modules of the three baseline reactor designs. Overall plant availabilities have been selected at 72% for a nominal goal and 62% for a threshold. For fusion unique equipment these availabilities became 85% and 79%, respectively. The tireline for replacement of the UWMAK III first wall and blanket is complete with a total contin¬uous time requirement of 29 days for one reactor segment. This translates to an availability of 87% (undiluted for personnel utilization and other similar factors) for fusion unique equipment when using one possible maintenance plan, in addition, a detailed study plan has been developed and accepted by DMFE, ERDA and a survey of maintenance practices and problems was conducted in eight fission reactor related facilities.