We express our sincere thanks to the honorable Editors and anonymous Reviewers for valuable comments and fruitful suggestions, which significantly improved the manuscript. In this paper, hierarchical Bayes approach is presented for estimation and prediction of reliability indexes and remaining lifetimes of a cold standby series system under general progressive Type II censoring scheme. A simula...

We investigate Gaver’s parallel system attended by a cold standby unit and a repairman with multiple vacations. By analysing the spectral distribution of the system operator and taking into account the irreducibility of the semigroup generated by the system operator we prove that the dynamic solution converges strongly to the steady state solution. Thus we obtain asymptotic stability of the dyn...

We consider a basic cold standby system attended by a single repairman. The system satisfies the usual conditions (i.i.d. random variables, perfect repair, instantaneous and perfect switch, queueing). The operative unit has a constant failure rate and an arbitrary repair time distribution. We analyse the idle time of the repairman during the survival time of the system. Finally, as an example, ...

A method for operation study of a compressorless combined-cycle gas turbine (CCCGT) unit during transients from one steady-state mode to another, including start-up and shutdown, is proposed. As an example, studies the energy complex with capacity 60 MW are given. variant algorithm concept start/stop such This includes algorithms starting three initial states (cold, hot standby). For these algo...

In this paper, we analyze spare parts supply for a system with a “k-outof-N” redundancy structure for key components, different standby policies (cold, warm and hot standby redundancy) and local spare parts inventories for sub-components. We assume multiple part types (sub-components) that fail randomly with exponentially distributed interfailure times. Due to the standby policies and the limit...

The present paper deals with a system composed of two non –identical units A and B. Unit-A consists of two non identical components A1 and A2 in series form, whereas unit -B consists of only one component, which is different from the components of unit-A . Initially the unit –A is operative and the unit-B is kept into cold standby. For the successful operation of the system either both the comp...