A METHOD FOR RECOVERING A FAULTY UNIT AND A RECOVERY SYSTEM

摘要

This invention relates to a method for recovering a faulty unit, comprising the steps of taking a faulty unit out of operation, recovering the unit and bringing the unit back into operation if the tests that have been carried out indicate that it is in condition. For preventing "bouncing" of the unit and an unnecessary load caused to the system, a predetermined number of recovery periods, the length of each recovery period and the maximum number of the recovery acts to be carried out during each recovery period are defined. The recovered unit is set under monitoring for the duration of the recovery period, whereby the monitored unit is re-recovered if necessary if the number of the recovery acts carried out during a recovery period does not reach the maximum number determined for the period. On termination of the recovery period, the unit is set under monitoring for the duration of the new recovery period if the unit has been recovered at least once during the terminated recovery period and if the terminated recovery period was not the last determined recovery period, and after the termination of the last recovery period the unit is no longer recovered. The invention further relates to a recovery method.