Abstract
Equations are deduced describing the stress behaviour of a thick-walled cylindrical concrete pressure vessel prestressed by secantial and longitudinal cables, at various stages of construction and operation of the reactor. The treatment is based on the assumption that the material behaves elastically and that the cylinder faces remain plane upon loading. The stress is described for circumferential secant prestressing and longitudinal prestressing, for internal pressure loading and for heating of the wall varying in radial direction. The influence of successive prestressing of secantial cables with respect to stress is also analysed and possibilities are indicated on how to eliminate this influence.
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