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eLibrary > 23/30445124 DC BS ISO 7447 Underwater acoustics. Measurement of radiated underwater sound from percussive pile driving. In- situ determination of the insertion loss of barrier control measures underwater >

23/30445124 DC BS ISO 7447 Underwater acoustics. Measurement of radiated underwater sound from percussive pile driving. In- situ determination of the insertion loss of barrier control measures underwater, 2023

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23/30445124 DC BS ISO 7447 Underwater acoustics. Measurement of radiated underwater sound from percussive pile driving. In- situ determination of the insertion loss of barrier control measures underwater, 2023

30445124-NC.pdf
ISO_DIS 7447 ed.1 - id.83266 Enquiry PDF (en).pdf [Go to Page]
Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Instrumentation [Go to Page]
4.1 General information
4.2 Hydrophones and analysers
4.3 Analysis software
4.4 Calibration
5 Methods [Go to Page]
5.1 General remarks
5.2 Comparability of measurements
5.3 Background noise
5.4 Measurements on one single pile (direct method)
5.5 Measurements on two different piles (indirect method)
6 Measurement procedure [Go to Page]
6.1 General remarks
6.2 Chronological order of the measurements
6.3 Measuring positions [Go to Page]
6.3.1 General
6.3.2 Number of hydrophones/measuring positions
6.3.3 Measuring distance
6.3.4 Measuring direction
6.3.5 Measuring depths
6.4 Examples of measuring setups [Go to Page]
6.4.1 General
6.4.2 Measuring setup€1€— Checking for a radially-symmetric effect
6.4.3 Measuring setup€2€— Checking for dependence on depth
6.4.4 Measuring setup€3€— Measure with radially-symmetric effect, independent of the respective depth
6.5 Functional test and measuring conditions
6.6 Measuring quantities and accompanying parameters
6.7 Data recording
7 Data processing and calculation of acoustic metrics [Go to Page]
7.1 Data processing steps
7.2 Background noise correction
7.3 Determination of the insertion loss [Go to Page]
7.3.1 General
7.3.2 Case€1€— Measurement on one pile
7.3.3 Case€2€— Measurement on two different piles
7.4 Uncertainties [Go to Page]
7.4.1 General
7.4.2 Measurement uncertainty
7.4.3 Characterization of noise abatement systems
7.5 Sound insulation for broadband level quantities
8 Reporting [Go to Page]
8.1 Formal information in the reports [Go to Page]
8.1.1 Front page
8.1.2 Recurring information on the following pages
8.1.3 Signatures
8.2 Contents of the reports [Go to Page]
8.2.1 Structuring of contents
8.2.2 Description of the measurements
8.2.3 Presentation of the results
Annex€A (informative) Considerations for near shore piling applications
Annex€B (informative) Sound Particle Motion and Seabed Vibration
Bibliography [Go to Page]

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23/30445124 DC BS ISO 7447 Underwater acoustics. Measurement of radiated underwater sound from percussive pile driving. In- situ determination of the insertion loss of barrier control measures underwater, 2023

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