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Corresponding Author

Elbaz, Mohamed

Subject Area

Mechanical Power Engineering

Article Type

Original Study

Abstract

Nuclear power plant, nuclear industry and aerospace industry require a high level of safety so it is necessary to make risk assessment for these systems, subsystems and components. So, it is needed to take into consideration the components failure rate and its probability, and have qualitative and quantitative evaluation using fault tree analysis. The conducted study is aiming to make qualitative and quantitative evaluation for Auxiliary Feed Water system (AFWS) which is designed to supply feed water to the steam generators for Reactor Coolant System (RCS) heat removal in a case of loss of main feed water or loss of all AC (alternating current) power to the station auxiliary, (AFWS) consisted of two trains to single steam generator which achieve 100% capacity for each train, Complete redundancy and diversity achieved. Results show the qualitative evaluation of auxiliary feed water system, this qualitative assessment is supported by failure rate data of components to have quantitative evaluation, this study indicated the unavailability of the individual components and the total unavailability of the (AFWS) for 8760 hour. To be sure that the system is available during operation periods, test and repair periods must be obtain at its exact scheduled time.

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