Abstract
For fatigue and crack growth tests under light water reactor conditions a special test facility has been developed. Main characteristics are an electromechanical loading equipment, vertical sectioned autoclaves with natural circulation and transducers, fitted with welded strain gauges, for load and displacement measurement inside the autoclave. Oxygen contents of 0 and 8 ppm are realized by pressurisation with nitrogen and oxygen or air. For oxygen contents between 0 and 8 ppm a water circulation loop with refreshing equipment is available. The test facility is restricted to a maximum load of 100 kN and a maximum frequency of 1 Hz. Due to these restrictions the benefits are lower costs for procurement, operation and maintenance, as well as by greater ease of operation and lower susceptibility to malfunction, compared with universal test facilities.
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