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Chapter 6


Modification refers to the transformation of a unit's required function into a new one, and is not considered a maintenance measure. It is important to note that modification does not mean replacing a unit with an equivalent one.

The maintenance organisation is often responsible for completing modification tasks to ensure that a unit is able to fulfill its new function. Keep your operations running smoothly by ensuring that any necessary modifications are properly implemented

Modification According to Standard

According to the European Standard, Modification is defined as:

The combination of all technical, administrative actions, intended to change one or more functions of an object.

For maintenance, this means all measures designed to improve product quality or speed. This also applies when a piece of equipment is modified to suit a new product or packaging. Such measures should be separated in terms of cost from the maintenance budget and they are usually expensed as investments.

The standard states that:

  • Modification is not a maintenance measure but refers to the modification of a unit’s required function into a new one.
  • Modification does not mean replacement with an equivalent unit.
  • Modifying a unit can be a task for the maintenance organisation.




Sometimes it can be difficult to determine if a scheduled activity should be expensed as an investment (modification) or as an overhead cost. The chart below is intended to serve as an aid in the face of similar issue.







MaintMaster Maintenance Manual

This free manual can be used as a practical guide and support in the daily maintenance work and as part of the introductory material for newly employed personnel.

In this manual, you will learn:

check_circle_icon_tealHow to create vision, strategy and policies for your maintenance team

check_circle_icon_tealHow to build a maintenance team

check_circle_icon_tealWhich KPIs to use and how to set them up

check_circle_icon_tealHow to base your work on the EN Maintenance Standard

And a lot more…

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