Developing an effective industrial maintenance plan is one of the major challenges for technical managers in SMEs and mid-market companies. A well-designed plan reduces unplanned downtime, controls operating costs, and ensures regulatory compliance. But where to start? Which equipment should be prioritized? How often should interventions occur? This article offers you a practical guide with concrete examples to structure your industrial maintenance approach.
What is an industrial maintenance plan?
Definition and objectives
An industrial maintenance plan is a structured document that lists all preventive maintenance actions to be performed on a fleet of equipment, with their frequency, operating procedures, and necessary resources. It addresses three fundamental objectives:
- Reliability: maintain equipment in optimal operating condition
- Safety: prevent failures that could lead to accidents or environmental incidents
- Compliance: meet applicable regulatory requirements (ICPE, ERP, sectoral standards)
Different types of maintenance
- Preventive systematic maintenance: interventions at fixed frequency (weekly, monthly, annual)
- Preventive conditional maintenance: based on condition indicators (vibrations, temperature, electrical resistance)
- Corrective maintenance: intervention after detecting a failure
- Predictive maintenance: anticipating failures through data analysis (IoT, machine learning)
Step 1: Equipment inventory and criticality
Build your comprehensive inventory
The first step is to list all equipment at your facility: production machines, electrical equipment, safety systems, technical installations (lightning protection, sprinklers, air conditioning, etc.). For each piece of equipment, document:
- Unique identifier (tag or serial number)
- Precise location (building, level, zone)
- Manufacturer data (brand, model, commissioning date)
- Criticality for production or safety
Criticality assessment: the FMECA method
The FMECA method (Failure Mode, Effects and Criticality Analysis) allows you to prioritize your equipment according to three criteria:
- Frequency (F): probability of failure occurrence
- Severity (G): impact on production, safety, and environment
- Detectability (D): ability to detect the failure before it occurs
The Risk Priority Number (RPN = F × G × D) allows you to rank your equipment and allocate your maintenance resources accordingly.
Step 2: Definition of maintenance procedures
Concrete example: maintenance procedure for a lightning protection system
Here is an example of a preventive maintenance procedure for a lightning rod installation in an industrial context:
| Operation | Frequency | Estimated duration | Required qualification |
|---|---|---|---|
| Visual inspection of capture device | Annual | 30 min/unit | Qualified technician |
| Grounding resistance measurement | Annual | 1h/site | Qualified electrician |
| Control of down conductors | Annual | 2h/building | Qualified technician |
| Complete verification (Qualifoudre organization) | Biennial | Half day | Qualifoudre organization |
| Replacement of degraded surge arresters | On notification | Variable | Qualified electrician |
Concrete example: maintenance procedure for a production line
For a CNC machine tool, the typical preventive procedure includes:
- Daily: cleaning, checking oil and lubrication levels, visual inspection of safety components
- Weekly: belt tension verification, filter cleaning, fastening checks
- Monthly: complete lubrication, electrical parameter verification, geometric control
- Annual: complete overhaul, replacement of consumables, calibration
Step 3: Planning and scheduling
The 3-level planning rule
- Annual planning (N): macro view of major overhauls and regulatory checks
- Monthly planning: detail of interventions for the month, assignment of human resources
- Weekly planning: precise scheduling of work orders, management of unforeseen events
Managing production constraints
Preventive maintenance must fit within production constraints. Identify:
- Available maintenance windows (planned shutdowns, weekends, low-load periods)
- Redundant equipment allowing maintenance without production shutdown
- Lead times for critical spare parts
Step 4: Performance indicators (KPI) and continuous improvement
Essential maintenance KPIs
- MTBF (Mean Time Between Failures): average time between two failures
- MTTR (Mean Time To Repair): average time to restore operation
- Preventive maintenance rate: share of PM hours / total maintenance hours (target: >60 %)
- Regulatory compliance rate: % of regulatory deadlines met (target: 100 %)
- Maintenance cost / Current Replacement Value (CRV): sectoral benchmark 1 to 5 %
The continuous improvement approach (PDCA)
Your maintenance plan is not static. Apply the PDCA cycle (Plan-Do-Check-Act) by reviewing your procedures quarterly based on field feedback, analysis of failures that occurred, and regulatory changes.
Digitizing your maintenance plan with dedicated software
Managing an industrial maintenance plan on paper or spreadsheet quickly becomes unmanageable once the fleet exceeds a few dozen pieces of equipment. CMMS software such as LPS Manager allows you to:
- Centralize the inventory of all your assets with their complete history
- Automatically schedule interventions according to defined procedures
- Alert technicians and managers about upcoming deadlines
- Generate regulatory reports with one click
- Analyze KPIs in real time via dynamic dashboards
Conclusion: your maintenance plan, a profitable investment
A well-structured industrial maintenance plan is not an administrative burden: it is a lever for competitiveness and safety. By combining rigorous criticality analysis, adapted maintenance procedures, and digital planning tools, you significantly reduce failure costs while ensuring regulatory compliance of your installations.
Ready to digitize your maintenance plan? Discover LPS Manager, the solution dedicated to managing technical equipment and lightning protection installations.
