Abstract: The assessment of safety of pipeline elements from heat and power generating plants is presented. First, the changes in mechanical and structural properties under long-term operation are analyzed. Then, failure assessment is performed using the SINTAP procedures. Hypothetical cracks are assumed along the straight segments of the pipeline. The thermal stresses during cooling are accounted for. The analysis has been performed at the first level of the SINTAP procedures for steel at two stages of pipeline operation: (a) in the virgin state and (b) after 156,000h of service.
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