Direct ultimate disposal of spent fuel. Simulation of shaft transport. Functional testing of the SELDA system (TA 8)

The current status of activities and experience gained and the basic features of the SELDA system are explained in connection with the task of giving proof of the reliable functioning of systems for safe stopping of hoisting equipment running at undue speed. The results available are used to establish the design principles and data for a shaft hoisting equipment for a payload of 85 t. The system designed according to preliminary test results for ascertaining the required stopping power and its behaviour in the project tests is described, as well as the planned test performance, and the results and their evaluation. The stopping tests with the SELDA system, accompanying materials studies for improvement of the SELDA conveying belts, and further tests investigating the dependence of stopping power on a variety of parameters is reported along with results on the applicability of test results in a design study. (orig./HP)