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Integrated software tools supporting decision making on identification,prediction and optimization of complex technical systems operation,reliability and safety. Part 6. Integrated software tools application – Exemplary system operation cost analysis and maintenance optimization

Blokus-Roszkowska A., Kołowrocki K., Salahuddin H. M.

Journal of Polish Safety and Reliability Association

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2011

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Vol. 2, No. 2

323--336

EN

The integrated software tools are applied to the exemplary system operation cost analysis and maintenance optimization. Using the computer program CP 8.12 there is obtained the evaluation of the cost before and after the exemplary system operation process optimization and next the computer program CP 8.13 is applied for operation cost analysis of the improved exemplary system. The methods of corrective and preventive maintenance policy maximizing availability and minimizing renovation cost of the complex technical systems in variable operation conditions are illustrated for the analyzed exemplary system using equivalently the computer program CP 8.14 for maintenance policy maximizing system availability and CP 8.15 for minimizing system renovation cost.

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Integrated software tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 5. Integrated software tools application – Improved exemplary system operation and reliability characteristics prediction

Blokus-Roszkowska A., Kołowrocki K., Salahuddin H. M.

Journal of Polish Safety and Reliability Association

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2011

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Vol. 2, No. 2

307--322

EN

There is presented the application of the integrated software tools to the reliability of the improved exemplary complex technical system prediction. There are considered three ways of the exemplary system reliability improvement, i.e. a hot single reservation of its components, a cold single reservation of its components and replacing its components by the improved components with reduced intensities of departure from the reliability state subsets. Automatically obtained, using the computer program CP 8.16, the evaluations of these ways improved exemplary system unconditional multistate reliability function, the expected values and the standard deviations of its unconditional lifetimes in the reliability state subsets and the mean values of its lifetimes in the particular reliability states are presented. Moreover, in the case when the improved system is repairable, its renewal and availability characteristics are estimated using the computer program CP 8.8 with appropriately given data.

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Integrated software tools supporting decision making on identification, prediction and optimization of complex technical systems operation, reliability and safety. Part 4. Integrated software tools application – Exemplary system operation and reliability optimization

Blokus-Roszkowska A., Kołowrocki K., Salahuddin H. M.

Journal of Polish Safety and Reliability Association

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2011

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Vol. 2, No. 2

297--306

EN

There is presented the application of the integrated software tools to the operation and reliability of an exemplary complex technical system optimization. First using the computer program CP 8.9 there are determined the optimal limit transient probabilities of the exemplary system operation process at the particular operation states maximizing the system lifetime in the reliability states not worse than the critical reliability state and its optimal sojourn times at the particular operation states. Program CP 8.9 allows also for automatic evaluation of the exemplary system optimal unconditional multistate reliability function, the optimal expected values and standard deviations of its unconditional lifetimes in the reliability state subsets and the optimal mean values of its lifetimes in the particular reliability states. Moreover, in the case when the system is repairable, its optimal renewal and availability characteristics are obtained using the computer program CP 8.11.