Preventative Maintainability
- Preventative Maintainability
- the type of maintainability
representing the degree of easiness with which preventaive maintenance can be performed on a
business enterprise,
system,
application, or
component
- Preventative Maintenance
- Maintenance that corrects newly discovered defects or vulnerabilities in a
business enterprise,
system,
application, or
component
before they can cause future failures
As illustrated in the preceding figure, Preventative Maintainability is part of the following inheritance hierarchy:
The typical responsibilities of preventative maintainability are to:
- Model the ease with which newly discovered defects or vulnerabilities
can be corrected before they can cause future failures.
- Support the analysis and specification of
preventative maintainability requirements.
- Provide a foundation for evaluating the quality of an architecture.
Preventative maintainability is typically decomposed into the following aggregation hierarchy of subfactors:
Preventative maintainability is typically measured in terms of:
- Mean and maximum:
- Cost per operating hour of preventative maintenance.
- Cost to perform specific preventative maintenance task.
- Effort (person-time) per operating hour due to preventative maintenance.
- Effort (person-time) to perform specific preventative maintenance task.
- Down (turnaround) time due to specific preventative maintenance task.
- The conditions (e.g., the size and structure of the
maintenance organization in terms of staff size, roles and
skills levels, and support equipment)
under which the preventative maintenance is taking place.
Typical mechanisms for improving preventative maintainability include:
The following guidelines have been found to be useful
regarding preventative maintainability:
