Results of defect assessments are governed by the use in the proper way adequate data on stress distributions and defect geometry. In order to describe inherited stress state of weldment the finite element modelling results are used. The Augur 4.2 information on defect configuration is used to develop the three-dimensional solid model of damaged pipeline weldment by the use of geometry editor. The editor options provide by easy way creation and changing of the solid model. This model is used for fracture analysis by boundary element method with appropriate cross-section stress distribution and external loads.
Special attention is devoted to realization of sensitivity analysis.
Effect of variations in calculated stress distribution and defect configuration provided by Augur are estimated by built-in way. Augur 4.2 information on inspected zones reduces the level of ISI results uncertainty and therefore gives additional insurance of pressure boundary integrity. The benefits of Augur 4.2 application are supported by strength maintenance software, based on computer modelling and realizing assessment procedure. Vopilkin A.Kh., Strelkov B.P., Vanukov V. N., Aladinsky V.V., Makhanev V.O. Field application of Augur ultrasonic system during RBMK NPP Unit ISI and its impact on pressure boundary integrity. Bougacnko S.E., Denisov l.