Safety and reliability assessment of the system designed for decay heat removal of the Allegro Gas Fast Reactor Demonstrator is addressed, as part of Deliverable 1.4.3. Failure probabilities are calculated on various system configurations and integrated with probabilities of occurrence of corresponding hardware components and natural circulation performance assessment. The analysis suggests the improvement of measures against Common Cause Failures, in terms of an appropriate diversification among the redundant systems, to reduce the risk associated with the system malfunction. Results identify as well natural circulation as a challenging factor for the decay heat removal safety function accomplishment by means of passive devices.

ALLEGRO Reactor DHR System Reliability Analysis

Burgazzi, Luciano
2013-05-09

Abstract

Safety and reliability assessment of the system designed for decay heat removal of the Allegro Gas Fast Reactor Demonstrator is addressed, as part of Deliverable 1.4.3. Failure probabilities are calculated on various system configurations and integrated with probabilities of occurrence of corresponding hardware components and natural circulation performance assessment. The analysis suggests the improvement of measures against Common Cause Failures, in terms of an appropriate diversification among the redundant systems, to reduce the risk associated with the system malfunction. Results identify as well natural circulation as a challenging factor for the decay heat removal safety function accomplishment by means of passive devices.
Technical Report;Generation IV reactors;Gas cooled reactors;Risk Analysis
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.12079/7525
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