Maintenance technologies

Industrial maintenance

Maintenance technologies is a 2nd semester course held at University of Ljubljana, Slovenia.


2. semester - University of Ljubljana, Slovenia


Assistant Prof. Dr. Marko Polajnar, Prof. Dr. Mitjan Kalin

Course Points (ECTS)


Contact Information

University of Ljubljana, SLO

Course Overview

Module objectives

The students are acquainted with the activities and the duties of the maintenance department, above all in large companies, and are qualified to participate therein, mainly in the boundaries of EU (unification of concepts, terms). They also learn the physical-technical foundations important for the maintenance activity.

Knowledge outcome

The students obtain fundamental knowledge for professional management of maintenance work in the company, both for the corrective maintenance and especially for the preventive maintenance on all levels. They also gain the fundamental knowledge necessary to participate and collaborate in investment projects for the field of machinery.

Outline syllabus

  • Definitions and terms in the field of maintenance activity, all 11 chapters according to EN 13306.
  • Fundamental and additional duties of the maintenance department.
  • Organizational forms of maintenance department.
  • Maintenance work preparation (organization, duties, responsibilities).
  • Planning and scheduling maintenance work and activity.
  • 8 criterions of tribomechanical system stability according to Fitch.
  • Overview of some typical technical-technological procedures in scope of maintenance activity (vibration, balancing, internal tightness of hydraulic systems (wear), fault diagnostics ...).
  • Planning and designing machines/plants for maintenance and maintainability; general principles of maintainability
  • The relation of maintenance profession to the availability of work means
  • Technical diagnostics in the maintenance activity
  • Ensuring and controlling the proper machine/plant operating parameters and characteristics
  • The relation corrective vs. preventive maintenance; explanation of relations, maintenance tree structure, optimizing condition-based maintenance
  • The effect of maintenance on the machine/plant service life; technical and cost optimization, bathtub curve
  • Evaluating the efficiency of maintenance
  • Benchmarking in maintenance
  • External maintenance, decision and selecting criteria, the basics of maintenance contracts
  • Assessing and managing risks in maintenance, decisions on the replacement of elements or assemblies
  • Weibull analysis
  • Instruments and other aids for the execution of maintenance work and activity
  • The cooperation of maintenance professionals (department) in the investment and/or reconstruction planning and execution phase, and later during the machine/plant testing phase
  • Maintenance technical documentation (project for realisation, project of implemented works); the documentation content and chapters

Monitoring of student progress:

  • Written and oral examination
  • Report on accomplished exercises
  • Project reports 


  • E. C. Fitch: Proactive Maintenance for Mechanical Systems
  • M. A. Moss: Designing for Minimal Maintenance Expense
  • J. M. Gross: Fundamentals of Preventive Maintenance
  • B. W. Niebel: Engineering Maintenance Management
  • H. Wohllebe: Technische Diagnostik im Maschinenbau
  • T. Wireman: Benchmarking Best Practices in Maintenance  Management
  • H. V. M. Stewart: Organisation des Reparatur- und Instandhaltungsbetriebes
  • J. D. Campbell, A. K. S. Jardine: Maintenance Excellence