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The Plant Availability report shows how operational your plant and equipment has been during a selected time period. It highlights how much downtime has occurred and what has contributed to it. This gives you a clear picture of performance, risk and areas that may require improvement.
How it Works
The report looks at Breakdown Jobs raised against equipment and compares the Call Date and Completed Date with the Operational Hours of the site or branch.
Any time that equipment is unavailable during operational hours is treated as downtime.
Breakdown Jobs Included in the Report
A job must meet all of these rules to be counted as downtime:
It is complete.
It uses a Priority Code where the Reference = BD.
It is a Repair job (not PPM / Service).
It is logged against Equipment.
A Root Cause has been selected on completion.
If any of the above are missing, the job is excluded from the calculation to keep your insights accurate.
Equipment & Redundancy Factor
Each job is linked to an Equipment Record.
The Equipment Record determines:
The area of the site impacted by the breakdown.
The Redundancy Factor: how severe the downtime is.
What is a Redundancy Factor?
It represents how much the equipment affects operations when it is down:
Redundancy Factor | Impact |
100% | The area cannot operate |
50% | Only half of the area can operate |
0% | No impact on operations |
Example
If you run the report for 1 hour and:
Equipment was down for 30 minutes.
Redundancy Factor is 100%
Downtime = 50%
If the Redundancy Factor is 50%
Downtime = 25%
In most cases, many pieces of equipment contribute at once, so the report calculates these together automatically.
Operational Hours
Only breakdowns that happen during the branch’s Operational Hours count as downtime.
Operational hours are set in Branch Maintenance, for each day of the week.
So:
A Saturday evening breakdown on a Mon–Fri only site = Not counted
A breakdown outside operational hours = No downtime impact
This keeps reporting aligned to actual business impact.
Plant Availability Calculation
AverageAvailableHrs / (AverageAvailableHrs + SumDowntime
The report uses this formula:
Available Hours / (Available Hours + Downtime)
Where:
Available Hours = Report period within operational hours.
Downtime = Sum of downtime, adjusted by redundancy factor.
Simple Example
Report period: 24 hours.
Operational hours: 24 hours.
Factored downtime: 1 hour 13 minutes = 1.2167 hours (decimal).
Calculation: 24 / (24 + 1.2167) = 0.9517 | 95.17% Plant Availability
If the period is 48 hours, then:
48 / (48 + Downtime)…and so on.
