What is a CMMS?

CMMS stands for Computerized Maintenance Management System. It is a software application used to plan, record and manage maintenance activities digitally, with the goal of improving the reliability, availability and service life of plant and equipment.

A CMMS is indispensable in production and infrastructure environments where planned and corrective maintenance are essential.

🧰 What does a CMMS do?

A CMMS provides support for activities such as:

• Creating and assigning work orders (preventive and corrective)
• Logging and following up on faults
• Managing spare parts
• Maintaining maintenance history
• Scheduling inspections
• Measuring KPIs such as Mean Time To Repair (MTTR) and availability

🏭 CMMS in OT environments

In Operational Technology (OT), a CMMS is often integrated with systems such as:

• SCADA or MES to forward fault notifications automatically
• PLCs or field equipment via standard protocols (e.g. OPC UA)
• Asset management systems for synchronising installation data

🔄 Some CMMS solutions integrate closely with ERP systems, for example SAP PM or Maximo.

📊 Example: water authority

When a fault occurs at a pumping station:

• The SCADA system detects the failure and generates a notification
• The CMMS automatically receives a work order for an engineer
• The engineer is informed via a mobile app
• After repair, they record the work performed and parts used
• Everything is logged for analysis and reporting

🧾 Common CMMS systems

• Ultimo
• IBM Maximo
• SAP PM
• IFS Maintenix
• Infor EAM
• eMaint

📌 In summary

A CMMS is the digital heart of maintenance management in industrial and infrastructure environments. It improves the reliability of assets, reduces unplanned downtime and supports maintenance teams with data and insight.