THE EVALUATION OF METAL OIL AND GAS EQUIPMENT IN A CURRENT CONDITION BY MEANS OF TRANSFER FUNCTION PARAMETERS

The equipment used for oil refining, dealing with highly explosive, inflammable and toxic atmospheres at surplus pressure and high temperatures, its operation term considerably exceeds normative one, is potentially dangerous and increases emergency situations, thus it is very important to define technical condition and the possibility of secure operation by scientifically proved methods at the end of normative operation term [7]. The modern definition of technical diagnostics as a field of scientific-technical knowledge, the essence of which is the theory, methods and means of faults detection and search of technical origin, includes the methods and means of undestroyable control. Nowadays a wide range of undestroyable control methods and items, among which important electromagnetic ones, are used to solve the diagnostic tasks of oil and gas equipment. A prosperous direction for solving the diagnostics tasks of oil and gas equipment is the usage of electro physical and mechanical properties interconnection in constructive steels. The mechanical and electro physical properties of metals interconnect with each other on the level of crystal lattice. The deformation of crystal structure, the fault origin and extension are followed by the alteration of mechanical and electro physical metal properties [4]. This way of interaction is necessary to use for the detection of actual metal condition in the operation process. If metal is a non-linear system, it is possible to apply well-known methods of condition control such as the analysis of transfer function by incoming effect and system reaction. This way permits not to absorb into consideration but it makes possibl