Piping System Noise Issues: Multiple Noise Sources

Noise levels in power plants continue to be exceeded on occasion in spite of recent developments such as industry wide use of the International Electrotechnical Commission (IEC) control valve standard 534-8-3. There are several reasons for this related to the specific piping system under consideration. This paper presents flow test data showing the addition of sound powers and the resultant increase in noise due to multiple control valves discharging into a common manifold pipe.