Scientific paper ID 216 : 2008/1

Testing of the tube.s metal properties, analyzing of the pipe depth limit in the place with initiated defect is an important moment in the system of the undertaking about the well-to-do of the reliability of AEC exploitation. The object of the present paper is the analyzing of the 3D limit depth in the pipe wall, as the strain and stress changes in the vicinity of the crack, reflected on the crack stability of the metal.