Nuclear Steam Pipeline Vibration
Checking the status of steam lines and supporting elements in the unit A-820 to provide vibration resistance. Development of technical measures to reduce the vibration load on steam lines in the A-820.
The following tasks are addressed within the framework of the improvement measures:
-
The model of steam lines in the 3D PipeMaster software system is developed on the basis of real geometry in design and operational documentation. Four pipelines in the A-820 are considered, taking into account geometric and physical parameters and their fixation. The stress-strain state under normal operation conditions is calculated.
-
The natural mechanical frequencies calculations of pipelines were performed.
-
A hydromechanical model of pipeline fluctuations for the analysis of acoustic vibrations of steam lines was created.
-
A mathematical model of coupled acoustic-mechanical vibrations of a pipeline (mechanics) and a pair (acoustics) is developed.
-
Measurements of vibration characteristics of steam pipelines together with fastening elements, including spring suspensions and supports.
-
The level of vibration acceleration is measured for operating levels of 90 and 100%.
Diagnostic equipment for performing vibration acceleration measurements of steam lines has been developed. This equipment allows you to receive and process data by four channels of measurements.
