Complex strategies protective functions of technical systems aimed at reducing the severity or prevent failures.

Maintenance - preventive measures carried out systematically forced through the established periods, including a specific set of works.

All work is to maintain the necessary level of technical state of equipment are divided into the maintenance, repair, modernization and replacement.

Maintenance is divided into regulated and unregulated.

Regulate maintenance includes work performed in accordance with the technical documentation is mandatory after a certain mileage, operating time or the time interval for pre-approved regulations. Such works usually include: replacement of lubrication units, replacement of some critical of wearing and easy to replace parts, test vessels and hoisting devices, adjustment and commissioning of the responsible working machines (eg winders), periodic maintenance special plan and regulations, and so on. n., as well as checking the technical condition of the equipment with the help of technical diagnostics and visually. Work on the rules-based maintenance is usually accompanied by a stop work machines and are held on a special schedule. Ad hoc maintenance includes cleaning work, close-fitting, adjustment, addition of lubricant, replacement of wearing parts, and easy to replace, etc. The need for these works is revealed in its periodic inspections, condition monitoring with diagnostic systems and technical diagnostics. Eliminates comments identified during interruptions, transitions, and usually without stopping the process, or with a short stop.