Safety metal chimney pipe sectional furnaces rolling shop №1of jsc “ taganrog metallurgical plant

Purpose. At present, an urgent task is to determine the safety and suitability for further use of metal flue and vent pipes after long term use. Most metal flue and vent pipes were built in 60-80-ies famous last century and exploited for 35-50 years under strong aggression environment. To assess the safety and suitability for further operation was carried out a detailed examination of metal structures and foundations of the five chimneys rolling shop, held a screening calculation with regard to the existing at the moment loads and the actual technical condition of the pipe. Methodology. It was developed a method of work on the diagnosis of the technical state of structural metal chimney s, which includes work on the visual and instrumental inspection of metal structures pipes, determining the real breakout tubes and all existing at the time of the survey loads, checking calculation of pipes taking into account corrosion deterioration of the elements, determining the actual stresses in pipe elements. Findings. Based on visual inspections and instrumental metal chimneys, checking calculations given industrial safety evaluation and recommendations for repair and further operation. Revealed substantial damage to the breakout of pipes and their technical condition was found partially operational. If the project location spacers strength and stability of the pipe is provided, and in the absence of breakout on two levels the time increases 5 times, flexibility in half a metal pipe stability is not ensured, which threatens to collapse it. After completing work on the repair, the technical condition of flue pipes found to be satisfactory and they are suitable for further use. Originaliny. The data on the corrosion wear of metal structures pipes after 50 years of operation, the status of pipes and breakout breakout real impact on the stability and the bearing capacity of the pipe. Practical value. Результате экспертизы промышленной безопасности металлических дымовых труб позволили оценить их техническое состояние, их надежность и долговечность, и продлить срок дальнейшей безопасной эксплуатации после проведения ремонтных работ.