In the contemporary industrial landscape, maintenance planning has evolved from being reactive to proactive. Advanced Maintenance Planning and Scheduling (AMPS) helps firms minimize downtime, increase productivity, and enhance the overall efficiency of assets by employing systematic planning, data-based decision-making, and advanced maintenance practices.

Comprehending Maintenance Policies

Efficient maintenance requires well-defined policies that support organizational goals and shape the way maintenance activities are carried out. The maintenance policy impacts asset reliability, maintenance costs, and safety.

Maintenance strategies can be categorized into:

• Preventive Maintenance (PM): Regular servicing aimed at preventing asset failure.
• Predictive Maintenance (PdM): Utilizing condition-monitoring technologies and analytical techniques to forecast failures.
• Corrective Maintenance (CM): Fixing assets that have experienced a breakdown.

Some advanced maintenance policies include:

• Reliability-Centered Maintenance (RCM)
• Risk-Based Inspection (RBI)
• Total Productive Maintenance (TPM)

which aim to maximize reliability while minimizing costs and risks.

Setting Objectives for Maintenance

Well-defined objectives are necessary for managing maintenance initiatives. The objectives may include:

• Enhancing machine utilization
• Reducing the cost of maintenance
• Boosting safety and compliance
• Extending the life cycles of assets
  
  

These objectives must be quantifiable and aligned with the organizations overall objectives. Performance indicators like MTBF and MTTR can help track these objectives effectively.

Enabling Factors for Organization and People

An advanced maintenance strategy needs organizational readiness and competent people. Some important enabling factors include:

• Well-defined roles and responsibilities
• Regular training programs for skill enhancement
• Efficient communication between maintenance and operation teams
• Reliability-focused leadership support

An organization that prioritizes proactive maintenance can execute the plan efficiently.

Planning vs Scheduling

Despite their frequent interchangeability, planning and scheduling have different functions:

• Maintenance Planning: It encompasses the scope of work, resource identification, tool preparation, and availability of spare parts.
• Maintenance Scheduling: It involves allocating maintenance plans to time intervals, maximizing manpower utilization, and minimizing operational disruptions.

Planning helps ensure jobs are "ready to be executed," whereas scheduling helps execute those jobs in the best possible way.

Techniques Used in Predictive Maintenance

The predictive maintenance process utilizes technological advances to check the condition of machinery and identify potential problems before they become critical.

Some of the techniques used are:

• Vibration analysis
• Thermography
• Oil analysis
• Ultrasound technology
  

Such techniques help avoid unnecessary maintenance activities and unexpected downtimes, resulting in financial savings.

Criticality Analysis

All equipment may not be equally important for an organization, which is where criticality analysis comes into play. It helps determine the priority of equipment considering its importance from the operational, safety, environmental, and cost perspectives.

Some of the criteria for criticality analysis are:

• Impact on production
• Safety concerns
• Potential environmental damage
• Cost of repair

Criticality analysis helps allocate limited resources where they matter most.

Reliability Excellence

Companies move through various stages of maintenance maturity on the way to achieving reliability excellence.

Characteristics of high-performing organizations include:

• Data-based decision-making
• Maintenance management systems
• Continuous improvement initiatives
• Alignment of maintenance with strategic objectives

Maintenance Excellence helps achieve operational efficiency and lower costs.

Case Study Approach: Run-to-Failure vs Preventive Maintenance

A balanced maintenance strategy often involves a mix of Run-to-Failure (RTF) and Preventive Maintenance.

• RTF: Suitable for non-critical, low-cost assets where failure has minimal impact.
• PM: Essential for critical equipment where failures can cause significant downtime or safety risks.

Analyzing asset behavior and failure patterns helps determine the optimal strategy for each component.

Conclusion

Advanced Maintenance Planning and Scheduling transforms maintenance from a cost center into a value-generating function. By implementing structured planning processes, leveraging predictive technologies, and adopting advanced maintenance strategies, organizations can achieve higher reliability, reduced downtime, and improved operational performance.

A complete Masterclass on Advanced Maintenance Planning and Scheduling is out right now!

By Shara Najimudeen, Digital Marketing Executive, GLC Europe, Colombo Office, Sri Lanka.