Passive systems safety is a key design aspect of new generation Nuclear Power Plants (NPPs). The Passive Containment Cooling System (PCCS) of the AP1000 NPP is a typical passive safety system, by which the heat produced in the containment is transferred to the environment through natural circulation and atmosphere is used as ultimate heat sink, making the climatic conditions of the plant location influencing the system reliability. In this paper, the effect of air temperature and pressure on the system reliability is analyzed by the variance decomposition sensitivity method. Results show the importance of considering the joint effect of the air pressure and temperature for the system reliability assessment.
Modeling the effect of air temperature and pressure on the reliability of a passive containment cooling system
Di Maio, Francesco;Zio, Enrico;
2018-01-01
Abstract
Passive systems safety is a key design aspect of new generation Nuclear Power Plants (NPPs). The Passive Containment Cooling System (PCCS) of the AP1000 NPP is a typical passive safety system, by which the heat produced in the containment is transferred to the environment through natural circulation and atmosphere is used as ultimate heat sink, making the climatic conditions of the plant location influencing the system reliability. In this paper, the effect of air temperature and pressure on the system reliability is analyzed by the variance decomposition sensitivity method. Results show the importance of considering the joint effect of the air pressure and temperature for the system reliability assessment.| File | Dimensione | Formato | |
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The effect of the climate on the passive containment cooling system reliability.pdf
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