La moindre panne sur l’un de vos équipements entraîne une perte de productivité et peut avoir de graves répercussions sur votre rentabilité. Pour réduire les risques, appuyez-vous sur votre outil de GMAO afin d’analyser vos KPI et détecter les signaux d’alarme. Twipi Group vous informe sur les principaux indicateurs de maintenance à surveiller.
Equipment Reliability
To measure the reliability of a piece of equipment, you can calculate its MTBF (Mean Time Before Failure), the average amount of proper operating time between two malfunctions.
If the MTBF is too short, it’s an indicator of repeated breakdowns that damage your productivity and require more expensive upkeep. This indicator therefore helps you determine whether it is necessary to replace certain equipment in the short or medium term.
Other maintenance indicators help you gauge the reliability of your machines. These include:
- MTTF (Mean Time To Failure), which indicates the length of operation before the first breakdown occurs
- MUT (Mean Up Time), which measures the average period of operation after a repair
Efficiency of Service
MTTR (Mean Time To Repair) not only measures the efficiency of service calls, but also provides an indication of the equipment’s maintainability. This is based on several criteria, including:
- Technical documentation
- Ease of use
- The manufacturer’s standards
- The types of maintenance implemented
An overly long MTTR indicates that other solutions are required to simplify maintenance operations, thus reducing service time for your equipment.
Equipment availability factor
The availability factor indicates the probability that a piece of equipment can be used during a given period to fulfill the purpose for which it was designed. A distinction is drawn among three types of availability rates.
Gross availability factor
This indicator helps you verify that your equipment is not working over capacity. In addition, by providing data about your existing assets, the gross availability factor helps you avoid purchasing unneeded machinery. To calculate this KPI, compare the equipment’s operating time with its availability.
Net availability factor
For more precise data about the need to acquire additional tools, calculate the net availability factor. This is based on the gross availability factor minus any reasons why the machine would not be in operation, such as:
- Decrease in demand leading to a halt in production
- Internal management of national strikes
- Decreases in energy provision due to issues outside the production site
Intrinsic or inherent availability factor
The intrinsic availability factor is based solely on your equipment’s operating time and repair time. It is calculated on the basis of two other indicators: MTBF and MTTR.
Twipi Group develops simple, expert, innovative Computerized Maintenance Management Systems to help you evaluate your major maintenance indicators. Request a product demo now.