Studies on the application of the TL method for dose monitoring in large nuclear plants

The paper begins with the presentation of comprehensive grounds for the choice of the TL method supported by a discussion of faults and advantages of the two competitive methods i.e. photographic and TL followed by a short description of the instrument which is to be a model for the monitoring system are specified. They concern sensitivity, accuracy and precission, background, directional and energy dependence of response, fading, resistivity against environmental agents as well as the reader itself which is mainly responsible for the measurement accuracy and reproducibility. This is followed by an outline of construction principles for individual parts of the system, e.g.: high voltage supply, current to frequency converter, system for detector heating, method of planched temperature measurement and control, card transportation, thermoluminescence detection, reading of the card number, dark current compensation, data registration, time cycling, and card and bandage construction. Since each reader has to be tested according to an exactly specified programme, presentation of the detailed methods for this testing completes the study. (author)