BSI PD IEC TS 62600-40:2019
$189.07
Marine energy. Wave, tidal and other water current converters – Acoustic characterization of marine energy converters
| Published By | Publication Date | Number of Pages |
| BSI | 2019 | 48 |
This part of IEC 62600 provides uniform methodologies to consistently characterize the sound produced by the operation of marine energy converters that generate electricity, including wave, current, and ocean thermal energy conversion. This document does not include the characterization of sound associated with installation, maintenance, or decommissioning of these converters, nor does it establish thresholds for determining environmental impacts. Characterization refers to received levels of sound at particular ranges, depths, and orientations to a marine energy converter. Informative Annex B provides guidance on additional measurements that would be necessary to estimate source levels.
The scope of this document encompasses methods and instrumentation to characterize sound near marine energy converters, as well as the presentation of this information for use by regulatory agencies, industry, and researchers. Guidance is given for instrumentation calibration, deployment methods around specific types of marine energy converters, analysis procedures, and reporting requirements.
This document is applicable to characterization of sound from individual converters and arrays. This document primarily describes measurement procedures for individual converters, with extension to arrays discussed in informative Annex A.
PDF Catalog
| PDF Pages | PDF Title |
|---|---|
| 2 | undefined |
| 4 | CONTENTS |
| 7 | FOREWORD |
| 9 | INTRODUCTION |
| 10 | 1 Scope 2 Normative references |
| 11 | 3 Terms and definitions |
| 13 | 4 Symbols and abbreviated terms 5 Outline of method |
| 14 | 6 Instrumentation 6.1 Sound measurement system 6.1.1 General Table 1 – Summary of measurement procedures |
| 15 | 6.1.2 Frequency range 6.1.3 Sensitivity and dynamic range 6.1.4 Hydrophone directionality 6.1.5 Data acquisition and playback system 6.1.6 Calibration |
| 16 | 6.2 Deployment platforms for sound measurement systems 6.2.1 Fixed platforms 6.2.2 Drifting platforms |
| 18 | 6.2.3 Flow-noise and self-noise minimization 6.3 Contextual measurements 6.3.1 General 6.3.2 Winds Table 2 – Minimum measurement grades for metocean observations by category of marine energy converter |
| 19 | 6.3.3 Waves 6.3.4 Currents |
| 20 | 6.3.5 Sound speed profiles 6.3.6 Marine energy converter output |
| 21 | 7 Measurements and measurement procedures 7.1 Metocean conditions 7.1.1 General 7.1.2 Winds 7.1.3 Waves 7.1.4 Currents 7.2 Potential sources of acoustic masking 7.2.1 General |
| 22 | 7.2.2 Vessel noise 7.2.3 Biological noise sources 7.2.4 Precipitation 7.2.5 Air traffic 7.2.6 Physical sources 7.3 Underwater sound from marine energy converters 7.3.1 Levels of characterization 7.3.2 Measurement frequency range |
| 23 | 7.4 Wave energy converters 7.4.1 WEC characteristics |
| 24 | 7.4.2 Sound measurement system deployment 7.4.3 Temporal resolution 7.4.4 Spatial resolution |
| 25 | 7.4.5 Sound speed profiles 7.5 Current energy converters 7.5.1 CEC characteristics 7.5.2 Sound measurement system deployment Figures Figure 1 – Hydrophone orientation relative to WEC |
| 26 | 7.5.3 Temporal resolution 7.5.4 Spatial resolution |
| 27 | 7.5.5 Sound speed profiles 7.6 Ocean thermal energy converters 7.6.1 Overview Figure 2 – Zones for drifting CEC measurements |
| 28 | 7.6.2 Sound measurement system deployment 7.6.3 Temporal resolution 7.6.4 Spatial resolution |
| 29 | 7.6.5 Sound speed profiles 8 Data analysis procedures 8.1 General 8.2 Metocean conditions 8.2.1 Winds Figure 3 – Zones for drifting OTEC measurements |
| 30 | 8.2.2 Waves 8.2.3 Currents 8.3 Sound speed profiles 8.4 Marine energy converter output 8.4.1 General 8.4.2 Wave energy converters 8.4.3 Current energy converters 8.4.4 Ocean thermal energy converters |
| 31 | 8.5 Underwater sound 8.5.1 General 8.5.2 Acoustic signal processing |
| 32 | 8.5.3 Geo-referencing of drifting acoustic measurements 8.5.4 Global sample acceptance criteria |
| 33 | 8.5.5 Considerations specific to wave energy converters |
| 34 | 8.5.6 Considerations specific to current energy converters 8.5.7 Considerations specific to ocean thermal energy converters |
| 35 | 8.5.8 Aggregate statistics 9 Information to be reported 9.1 Sound measurement system |
| 36 | 9.2 Marine energy conversion system 9.3 Measurement site 9.4 Contextual measurements |
| 37 | 9.5 Specific reporting for wave energy converters 9.5.1 Level A Figure 4 – Example grid of median MEC sound pressure levels as a function of significant wave height and energy period |
| 38 | Figure 5 – Example of median mean-square sound pressure spectral density level variations as a function of sea state for a single spatial position Figure 6 – Example of median decidecade sound pressure level variations as a function of sea state for a single spatial position |
| 39 | 9.5.2 Level B 9.6 Specific reporting for current energy converters 9.6.1 Level A 9.6.2 Level B 9.7 Specific reporting for ocean thermal energy converters 9.7.1 Level A |
| 40 | 9.7.2 Level B |
| 41 | Annex A (informative) Sound within and around arrays |
| 42 | Annex B (informative)Additional measurements for source level estimation |
| 43 | Annex C (informative)Approaches to minimizing flow-noise C.1 General C.2 Methods specific to measurements in waves C.3 Methods specific to measurements in currents |
| 44 | C.4 General methods C.5 Methods to mitigate flow-noise distortion |
| 45 | Annex D (informative)Approaches to minimizing self-noise |
| 46 | Bibliography |
