STM Article Repository

Environmental safety issues are now becoming increasingly important in the life of society. For power engineering, among the issues of environmental safety, the problem of acoustic safety stands out. The problem of acoustic environmental safety is due to the fact that the operation of power equipment is associated with an increased noise level not only on the territory of the thermal power plant, but also on the border of the sanitary protection zone. These issues are especially relevant for thermal power plants located in close proximity to residential areas. In this work, acoustic calculations were performed to determine the sanitary protection zone for gas turbine units (GTU) and combined cycle gas units (CCGT) of various capacities in order to comply with sanitary standards for the noise factor. Sanitary standards for the noise factor are adopted for the boundaries of sanitary protection zones for the night time. A formula has been obtained for calculating the width of the sanitary protection zone depending on the capacity of gas turbine units and combined cycle plants, and their number. It is shown that the sanitary protection zone (SPZ) of a power unit of high capacity is smaller than the sanitary protection zone of several units of the same capacity. It is shown that the noise levels from individual groups of equipment can determine the noise at the entire border of the sanitary protection zone, or at its individual sections. At the same time, noise suppression measures should be carried out from all sources that create an excess of standards. It is necessary to start noise suppression measures from those sources that create an excess of sanitary standards in a larger section of the sanitary protection zone. Recommendations were received on the width of the sanitary protection zone of thermal power plants of different capacities with different equipment.