The paper describes the practical steps taken in the development of a light-weight steam discharge silencer, mounted at the outlet of the vent pipe.
With various degrees of valve throttling of superheater start-up valves as well as safety valves, the sound pressure level (SPL) effects at the vent pipe outlet were analysed before and after silencing.
Various configurations of the silencer were tested on steam discharge, some resulted in increased attenuation. Throughout the development programme, steam flow rates were measured along with SPL.
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References
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BeranekL. L.Noise and Vibration Control.
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BS 4142:1967Method of Rating Industrial Noise Affecting Mixed Residential and Industrial Areas, British Standards Institution.
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BS 759:1975Specification for valves, gauges and other safety fittings for application to boilers and to piping installations for and in connection with boilers, British Standards Institution.
