GB/T 10491-2010Noise criteria and sound measurement procedures for aero-derivative gas turbines turnkey installations (English PDF)

4.1

standard with A-weighted sound level (hereinafter referred to as. A sound level) as an evaluation value. If desired, an optional measure sound pressure level (C sound level) and

Octave band sound pressure level, but not as a basis for evaluation.

4.2

at full load and stable operation of the gas turbine, the average noise level at 1m away from the acoustic hood should not exceed 85dB (A). Gas turbine compartment

Acoustic hood 1m at the noise level limit value should be based on Standard of noise at boundary of industrial enterprises in the region to install the unit performed, or urban area ring

Environmental noise standards, taking into account the distance unit acoustic cover plant community, as well as on noise transmission Movies gas turbine plant or insulation of sound barrier

Sound, calculated by the purchaser after the presentation and after consultation with the contractor OK.

4.3

should be based on the specific circumstances of the plant boundary noise or environmental requirements and on-site, after calculation, made by the purchaser and in consultation with the contractor for fuel

Gas turbine noise level limit the following components at the outer 1m make provisions for. air intake, exhaust diffuser, acoustic cover vents and chimney outlet.

4.4

turbine control room noise level (local control room) should not exceed within the 70dB (A).

4.5

at full load and stable operation of the gas turbine, the average noise level of its outer insulation cover at 120m should not exceed 60dB (A).

4.6

turbine working under special conditions, the allowable noise level by the purchaser and the contractor as otherwise agreed.

4.7

Purchaser technical documents shall clearly indicate the scope of the noise level limit value. Unless otherwise specified, the scope of the noise level limit value

It does not include transient noise sources and noise sources do not work jointly with the gas-turbine plant produced. If for multiple units running simultaneously,

Units Number of units should be clearly stated; if combined cycle plant installed in the plant for inside and outside plant installation shall state apparatus that contains other […]