ISO 10494:2018
Turbines and turbine sets - Measurement of emitted airborne noise - Engineering/survey method

Standard No.

ISO 10494:2018

Release Date

2018

Published By

International Organization for Standardization (ISO)

Latest

ISO 10494:2018

Scope

This document specifies methods for measuring the noise emission of a turbine or turbine set under steady-state operating conditions. It specifies methods for measuring the sound pressure levels on a measurement surface enveloping a source, and for calculating the sound power level produced by the source. It gives requirements for the test environment and instrumentation, as well as techniques for obtaining the surface sound pressure level from which the A-weighted sound power level of the source and octave or one-third-octave band sound power levels are calculated. These methods can be used to conduct performance tests even if the purpose of the test is simply to determine the sound pressure level around the machine. This document is applicable to turbines and turbine sets: — for power plant and industrial applications (e.g. stationary); — for installation on board ships, or offshore installations, road and railway vehicles. It does not apply to gas turbines in aircraft applications. This document is applicable to only the part of the turbine set (turbine, driven equipment and attached components) located above the floor and inside a continuous enveloping measurement surface bounded by this floor. It is applicable to steady-state operation and excludes transients such as start-up and shut-down, when the noise emission can be higher for short times. Under these conditions, this document does not apply.

ISO 10494:2018 Referenced Document

• IEC 60268-4:2014 Sound system equipment - Part 4: Microphones
• IEC 60942:2017 Electroacoustics - Sound calibrators
• IEC 61260-1:2014 IEC 61260-1: Electroacoustics - Octave-band and fractional-octave-band filters - Part 1: Specifications
• IEC 61672-1:2013 Electroacoustics - Sound level meters - Part 1: Specifications
• ISO 11201:2010 Acoustics - Noise emitted by machinery and equipment - Determination of emission sound pressure levels at a work station and at other specified positions in an essentially free field over a reflecting plane with negligible environmental corrections
• ISO 12001:1996 Acoustics - Noise emitted by machinery and equipment - Rules for the drafting and presentation of a noise test code
• ISO 3382-2:2008 Acoustics - Measurement of room acoustic parameters - Part 2: Reverberation time in ordinary rooms
• ISO 3740:2000 Acoustics - Determination of sound power levels of noise sources - Guidelines for the use basic standards
• ISO 3741:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for reverberation test rooms
• ISO 3743-1:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for small movable sources in reverberant fields - Part 1: Comparison method for a hard-walled test room
• ISO 3743-2:1994 Acoustics - Determination of sound power levels of noise sources using sound pressure - Engineering methods for small, movable sources in reverberant fields - Part 2: Methods for special reverberation test rooms
• ISO 3744:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering methods for an essentially free field over a reflecting plane
• ISO 3745:2012 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Precision methods for anechoic rooms and hemi-anechoic rooms
• ISO 3746:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Survey method using an enveloping measurement surface over a reflecting plane
• ISO 3747:2010 Acoustics - Determination of sound power levels and sound energy levels of noise sources using sound pressure - Engineering/survey methods for use in situ in a reverberant environment
• ISO 6926:2016 Acoustics - Requirements for the performance and calibration of reference sound sources used for the determination of sound power levels
• ISO 80000-8:2007 Quantities and units - Part 8: Acoustics
• ISO 9614-1:1993 Acoustics; determination of sound power levels of noise sources using sound intensity; part 1: measurement at discrete points
• ISO 9614-2:1996 Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 2: Measurement by scanning
• ISO 9614-3:2002 Acoustics - Determination of sound power levels of noise sources using sound intensity - Part 3: Precision method for measurements by scanning
• ISO/TR 25417:2007 Acoustics - Definitions of basic quantities and terms
• ISO/TS 7849-1:2009 Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 1: Survey method using a fixed radiation factor
• ISO/TS 7849-2:2009 Acoustics - Determination of airborne sound power levels emitted by machinery using vibration measurement - Part 2: Engineering method including determination of the adequate radiation factor

ISO 10494:2018 history

• 2018 ISO 10494:2018 Turbines and turbine sets - Measurement of emitted airborne noise - Engineering/survey method
• 1993 ISO 10494:1993 Gas turbines and gas turbine sets; measurement of emitted airborne noise; engineering/survey method