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Discrimination of Imperilled Tubes to Forestall Tubebursts

Yang Wen-gu (Shanghai Power Epuipment Research institute)  
Abstract In this paper the relaxation of thermal stress in heat absorption tubes of boilers is mathematically analyzed, as well as the growth of the tubes' oxidized layers, the progressive diminuation of the tube wall thicknesses and its role in tube failures. Results of the analysis have effectively been applied to life assessment of boiler tubes operating with high steam parameters.
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