Description
Add operatingHours, plannedMaintenanceHours, and repairHours for calendarHours.
Work-time accounting separates productive time, allowances, overlap, and delays. Changing the allowance denominator or moving work outside downtime changes the interpretation of a calculated time.
Add operatingHours, plannedMaintenanceHours, and repairHours for calendarHours.
When to use this tool
Use Preventive Maintenance Cycle Availability Term when you need one explicit work-element or timing component.
How to use the tool and how it works
- Enter operatingHours, plannedMaintenanceHours, repairHours. Use the units and conventions below.
- Run the tool. Correct any format, range, or cross-field input error before interpreting the output.
- Read calendarHours, operationalAvailability, plannedOnlyAvailability. Use the output convention below.
Add operatingHours, plannedMaintenanceHours, and repairHours for calendarHours. Divide operating time by that total for operationalAvailability and by operating plus planned maintenance for plannedOnlyAvailability.1
| Input field | Meaning and units | Accepted input |
|---|---|---|
| operatingHours | Operating Hours | Required. Finite number; strictly above 0. |
| plannedMaintenanceHours | Planned Maintenance Hours | Required. Finite number; minimum 0. |
| repairHours | Repair Hours | Required. Finite number; minimum 0. |
| Output field | Interpretation | Returned shape |
|---|---|---|
| calendarHours | Calendar Hours | Required. Finite number. |
| operationalAvailability | Operational Availability | Required. Finite number. |
| plannedOnlyAvailability | Planned Only Availability | Required. Finite number. |
{
"input": {
"operatingHours": 90,
"plannedMaintenanceHours": 5,
"repairHours": 5
},
"output": {
"calendarHours": 100,
"operationalAvailability": 0.9,
"plannedOnlyAvailability": 0.9473684210526315
}
}Limitations and assumptions
- This is supplied period accounting, not a reliability forecast or a standardized availability definition chosen for the equipment.
- Inputs must satisfy both the field types and the cross-field conditions above. Invalid input causes an error; a successful false flag or documented placeholder is a different result.
- Numeric calculations use binary floating point unless exact decimal-integer arithmetic is explicitly stated. No hidden measurement tolerance or decimal rounding is added; nonfinite or out-of-contract results are rejected. Numeric signed-zero results are exported as zero.
Alternative or Complementary methods
Use a validated task study and resource plan, considering variability, ergonomics, and safe work requirements.
References
Similar or alternative tools
- Machine Changeover Internal External Time
Move movedToExternal out of internal time, subtract the two eliminated-time terms from their respective pools, and return downtimeReduction as moved plus eliminated internal time.
- OEE Availability Performance Quality One Factor
Compute availability = run/planned minutes, performance = idealCycleMinutes × totalUnits/runMinutes, and quality = goodUnits/totalUnits.