The following article presents an original method of resolving the problem connected with production line machines life maintenance with the use of state forecasting procedures. The research problem undertaken in this article focuses on defining and describing how to maintain a usability state for production line machinery used in industries on the example of the Philips Lighting Poland S.A. in Piła. The defined problems could probably be eliminated by shifting from a planed-preventive strategy to a state-based machinery usage strategy. To implement the second course of action it is necessary to develop suitable procedures monitoring the state of machines used in production lines, including procedures of their state evaluation and state prognosis.