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Availability, inherent (A i) [5] The probability that an item will operate satisfactorily at a given point in time when used under stated conditions in an ideal support environment. It excludes logistics time, waiting or administrative downtime, and preventive maintenance downtime.
Operational availability is used to evaluate the following performance characteristic. For a system that is expected to be available constantly, the below operational availability figures translate to the system being unavailable for approximately the following lengths of time (when all outages during a year are added together):
where B 10 is the number of operations that a device will operate prior to 10% of a sample of those devices would fail and n op is number of operations. B 10d is the same calculation, but where 10% of the sample would fail to danger. n op is the number of operations/cycle in one year. [11]
The total number, as well as the smaller numbers for various elements within a project, can be used for managing a project team, determining the team's efficiency, and ensuring that the project is not wasting materials and budget unnecessarily. The BOE can be used to ensure financial stability of a company.
The Average Service Availability Index (ASAI) [1] [2] is a reliability index commonly used by electric power utilities.ASAI is calculated as = where is the number of customers and is the annual outage time (in hours) for location .
License files would be bound to the host ID of the license server but could be made available to any client computer in the network; with the concurrent user limit enforced by the on-premise license server. License files are usually tied to the host ID of the license server by a MAC address or Ethernet address. The number of licenses registered ...
Handbooks of failure rate data for various components are available from government and commercial sources. MIL-HDBK-217F, Reliability Prediction of Electronic Equipment, is a military standard that provides failure rate data for many military electronic components. Several failure rate data sources are available commercially that focus on ...
Availability is the probability that a system will work as required when required during the period of a mission. The mission could be the 18-hour span of an aircraft flight. The mission could be the 18-hour span of an aircraft flight.