On Ship Systems Multi-state Safety Analysis

ABSTRACT: A multi-state approach to defining basic notions of the system safety analysis is proposed. A system safety function and a system risk function are defined. A basic safety structure of a multi-state series system of components with degrading safety states is defined. For this system the multi-state safety function is determined. The proposed approach is applied to the evaluation of a safety function, a risk function and other safety characteristics of a ship system composed of a number of subsystems having an essential influence on the ship safety. Further, a semi-markov process for the considered system operation modelling is applied. The paper also offers an approach to the solution of a practically important problem of linking the multi-state system safety model and its operation process model. Finally, the proposed approach is applied to the preliminary evaluation of safety characteristics of a ship system in varying operation conditions.

KEYWORDS: Safety at Sea, Marine Navigation, Sea Transportation, Semi-Markov Process, Multi-State Safety Function, Safety Analysis, Ship Operation Process, Complex Multi-State System

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Citation note:

Dziula P., Jurdziński M., Kołowrocki K., Soszyńska J.: On Ship Systems Multi-state Safety Analysis. TransNav, the International Journal on Marine Navigation and Safety of Sea Transportation, Vol. 1, No. 2, pp. 199-205, 2007

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Przemysław Dziula: ORCID iD icon

orcid.org/0000-0002-3930-1316 Scopus icon

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