Abstract
Integrity and life assessment of structural elements or structures subjected to variable loads is necessary in order to define the control interval and removal of damages that occurred during exploitation. Integrity and life assessment of a reactor was carried out with the previously performed welding technology qualification for new and exploited parent material sheets, made of Cr-Mo steel A-387 Gr. B, with a thickness 102 mm. Exploited parent material is the part of a reactor mantle which was in exploitation for over 40 years and is in the repair stage, i.e. its mantle is being replaced with the new material. Obtained test results and their analysis should provide a practical contribution to the assessment of exploitation conditions effects on the behaviour of parent material, welded joint components and the pressure vessel (reactor) used for exploitation at elevated temperatures, all for the purpose of integrity and life assessment of the structure, along with the revitalisation and work life extension of process equipment (reactor), made of steel used for exploitation at elevated temperatures.
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