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Ewa Kuligowska

Abstract

The material given in this paper delivers the procedure for numerical approach that allows finding the main practically important safety characteristics of the complex technical systems at the variable operation conditions including operating environment threats. The obtained results are applied to the safety evaluation of the maritime ferry technical system. It is assumed that the conditional safety functions are different at various operation states and have the exponential forms. Using the procedure and the program written in Mathematica, the considered maritime ferry technical system main characteristics including: the conditional and the unconditional expected values and standard deviations of the system lifetimes, the unconditional safety function and the risk function are determined.

Open access

Krzysztof Kołowrocki, Ewa Kuligowska and Joanna Soszyńska-Budny

Abstract

The paper presents an integrated general model of complex technical system, linking its multistate safety model and the model of its operation process including operating environment threats and considering variable at different operation states its safety structures and its components safety parameters. Under the assumption that the system has exponential safety function, the safety characteristics of the port oil piping transportation system are determined.

Open access

Krzysztof Kołowrocki, Ewa Kuligowska and Joanna Soszyńska-Budny

Abstract

This paper presents the computer simulation technique related to the reliability of an object under variable operation conditions. The Monte Carlo simulation is performed and, consequently, the unknown parameters for the considered object operation process and its main reliability characteristics are identified. The optimal transient probabilities of the object operation process at the particular operation states and its optimal unconditional reliability function are determined.