Sound Dead Steel reduces gas pipeline noise
A
SoundDeadSteel.com product story
Edited by the Engineeringtalk editorial team
Oct 17, 2008
Sound Dead Steel (SDS) was contacted by the Industrial Noise and Vibration Centre (INVC) to assist with a noise reduction programme for Scottish Power.
The power station's main gas pipe work is 400mm diameter, with a reduction to 150mm at the metering section.
Close microphone measurements indicated noise levels as high as 100 to 110dB(A) with the dominant energy at frequencies >500Hz.
SDS clad the pipeline with Sonphonon sound dead steel, fabricated and fitted split boxes to encase the valves.
After the final snagging was completed, the attached noise survey was carried out to determine the overall noise reduction for this project.
The average noise reduction achieved within the GRF compound was approximately 8dB(A).
The maximum reduction achieved was 16dB(A); this was adjacent the metering flow meter area.
INVC noted that noise from adjacent cooling fans masked the full noise reduction benefits.
Noise reductions on plain pipeline measured 19dB(A), which clearly shows the effectiveness of the SDS cladding on standard pipe sections.
Reductions of 7 to 8dB(A) were measured mid, up and downstream of the metering section using close microphone measurements.
The reductions would have been greater, but pipe joint flanges have to be left open in case leakage occurs resulting in explosive conditions.
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