## 1 Introduction into the Problem Area  
The primary purpose of maintenance is to keep production and other equipment operational and prevent or minimise outages caused by conventional and unconventional failures. Such outages cause unexpected financial costs, either for their removal or due to interruption of planned production. Technologically, it concerns processes of a regular check of functions, repair or replacement of parts, technological modifications, and other specialised operations. It is one of the primary departments within industrial companies of all types--light, medium, and heavy. Maintenance in production plants is a very current topic since global optimisation of equipment maintenance results in minimisation of operational costs, both maintenance and production. It also leads to an overall decrease in production equipment failures and an increase in production potential and effectivity. In addition, it eliminates planning and logistic problems incurred by an unexpected production outage. The objective of effective maintenance is to reduce undesired, accidental and unexpected anomalies, so-called reactive maintenance, and to substitute them by planned downtimes, so-called preventive maintenance. Correct maintenance of production equipment affects its failures, i.e., increase its productivity. To understand basic divisions of maintenance, see Figure 1:  
1. Improvement--technological improvement of the equipment;
2. Corrective--reactive maintenance, repairs of unexpected failures;Preventive Maintenance and Contemporary Real Solutions Using the Total Productive Maintenance (TPM) Methodology  
Maintenance optimisation and standardisation take advantage of recommendations from the TMP, i.e., total productive maintenance (TPM), established by [PERSON], Japan, after WWII. It is founded on eight pillars [1]. TPM is the process of maximizing equipment effectiveness through the active involvement of all supporting departments. The goal of TPM is to improve overall productivity by optimizing equipment availability. The classic version of the TPM methodology is very general and it has been modified for the needs of this article We will primarily focus on planned maintenance, including a proposal of innovation of the whole methodology and its real implementation and verification in an international industrial plant. TPM is built on the 5S methodology, which helps organize and standardize facility procedures, leading to many benefits for both production and workplace quality. **Four significant benefits of total productive maintenance [1]. **  
Less unplanned maintenance  
With carefully planned and scheduled maintenance, equipment is extremely well maintained. Additionally, TPM empowers all plant personnel to take ownership of their machines and maintenance is a positive investment for them. Since TPM makes maintenance personal, assets are better cared for. Reduced equipment downtime  
More planned maintenance means fewer failures. By implementing proactive maintenance activities, downtime events are minimized  
Lower manufacturing costs. As overall equipment efficiency (OEE) increases, production costs are also minimized. Higher productivity leads to higher profits and reduced spending on equipment stoppage time and repairs. Strengthened workplace safety  
Because TPM is built on the 5S foundation, the workplace is systematically organized and cleaned. The steps in the 5S method--sort, straighten, shine, standardize, and sustain-- uncover underlying problems and challenges to maintaining the work environment. Figure 1: Basic division of maintenance. Three significant challenges of total productive maintenance for organizations are [1]:  
1. Cultural change. Adjusting an organization's culture around the principles of TPM may sound like a big, abstract concept. 2. Wasteful inventories. 3. Neglecting continuous improvement and performance management.