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The power utility has the ability to produce 45,583 megawatts (61,128,000 hp) but could only supply 24,000 megawatts (32,000,000 hp) due to "planned and unplanned" maintenance. One turbine at Eskom's Duvha Power Station is still out of commission due to an "unexplained incident" in March 2014. [ 67 ]
Planned change occurs through a full iteration encompassing the four phases, i.e., starting with an operation and maintenance phase, flowing through initiation, development, and implementation, and arriving at a new operation and maintenance phase. Unplanned change occurs through fixes, adaptations, and experimentation that can occur within any ...
The term power system control describes actions taken in response to unplanned disturbances (e.g., changes in demand or equipment failures) in order to provide reliable electric supply of acceptable quality. [3] The corresponding engineering branch is called Power System Operations and Control.
Event – description of equipment failures such as when the event started/ended, type of outage (forced, maintenance, planned), etc. One example of such detail is that in its data pertaining to forced outages and unplanned unit failures, it makes the fine distinction between immediate, delayed, and postponed outages. [3]
Maintenance models consist of scenarios, segments, systems, subsystems, components, and repair tasks. The underlying built-in stochastic maintenance model simulates the flow of systems into segments of a scenario and the performance of maintenance actions to estimate maintenance manhours for defined systems.
A planned outage is the result of a planned activity by the system owner and/or by a service provider. These outages, often scheduled during the maintenance window, can be used to perform tasks including the following: Deferred maintenance, e.g., a deferred hardware repair or a deferred restart to clean up a garbled memory
Predictive maintenance evaluates the condition of equipment by performing periodic (offline) or continuous (online) equipment condition monitoring.The ultimate goal of the approach is to perform maintenance at a scheduled point in time when the maintenance activity is most cost-effective and before the equipment loses performance within a threshold.
Planned preventive maintenance (PPM), more commonly referred to as simply planned maintenance (PM) or scheduled maintenance, is any variety of scheduled maintenance to an object or item of equipment. Specifically, planned maintenance is a scheduled service visit carried out by a competent and suitable agent, to ensure that an item of equipment ...