ISO 18436-4: Condition Monitoring and Diagnostics of Machines – Lubrication

ISO 18436-4 is an international standard that outlines the requirements for personnel involved in machine condition monitoring and diagnostics using lubrication analysis. It is part of the broader ISO 18436 series, which focuses on condition monitoring across various technologies.

This specific part – Part 4 – addresses lubricant analysis (LA) and establishes criteria for the training, qualification, and assessment of lubrication professionals. It ensures that individuals are properly educated and competent to perform lubrication-based condition monitoring on rotating equipment and machinery.

Why is ISO 18436-4 important?

The goal of ISO 18436-4 is to ensure reliable and consistent practices in lubrication management, regardless of industry or region. By setting standards for knowledge, skills, and practical capabilities, it helps organisations:

• Improve machine reliability and uptime
• Reduce the risk of contamination or incorrect lubrication
• Prevent unplanned maintenance or equipment failure
• Create a solid foundation for predictive maintenance programmes
  
  

Levels of Certification under ISO 18436-4

ISO 18436-4 defines two levels of certification for lubrication analysis personnel:

MLT I – Machinery Lubrication Technician Level I

• Focuses on basic lubrication knowledge and skills
• Ideal for lubrication technicians or maintenance personnel
• Covers the correct storage, handling, application, and selection of lubricants
• Emphasises contamination control, safety, and best practices
• Prepares individuals to work under supervision and carry out routine lubrication tasks

MLT II – Machinery Lubrication Technician Level II

• Designed for more experienced professionals
• Requires MLT I certification or equivalent experience
• Covers advanced techniques in lubrication, contamination control, and inspection
• Includes fault detection, troubleshooting, and lubricant testing
• Enables technicians to take a leadership role in a lubrication programme

Both levels are fully aligned with ISO 18436-4 requirements and are internationally recognised, especially through certifications provided by bodies like the International Council for Machinery Lubrication (ICML).

Who should get certified?

Professionals involved in:

• Plant maintenance
• Reliability engineering
• Predictive maintenance programmes
• Asset management
• Lubrication programme design

Certification according to ISO 18436-4 demonstrates a commitment to professional standards and improves both individual career prospects and organisational performance.

ISO 18436-4 helps define what competent lubrication technicians and analysts should know and be able to do. Following this standard ensures a structured approach to lubrication-based condition monitoring, improving the reliability and longevity of critical machinery.