IEC TS 62600-40:2019

Marine energy - Wave, tidal and other water current converters - Part 40: Acoustic characterization of marine energy converters

IEC TS 62600-40:2019 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.
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.

General Information

• Status: Published
• Publication Date: 17-Jun-2019
• ICS: 01 - GENERALITIES. TERMINOLOGY. STANDARDIZATION. DOCUMENTATION
• ICS: 27.140 - Hydraulic energy engineering
• Technical Committee: TC 114 - Marine energy - Wave, tidal and other water current converters
• Drafting Committee: ahG 11 - TC 114/ahG 11
• Current Stage: PPUB - Publication issued
• Start Date: 18-Jun-2019
• Completion Date: 18-Jun-2019

Standards Content (Sample)

IEC TS 62600-40 ®
Edition 1.0 2019-06
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –
Part 40: Acoustic characterization of marine energy converters

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IEC TS 62600-40 ®
Edition 1.0 2019-06
TECHNICAL
SPECIFICATION
colour
inside
Marine energy – Wave, tidal and other water current converters –

Part 40: Acoustic characterization of marine energy converters

INTERNATIONAL
ELECTROTECHNICAL
COMMISSION
ICS 27.140 ISBN 978-2-8322-6926-8

– 2 – IEC TS 62600-40:2019 © IEC 2019
CONTENTS
FOREWORD . 5
INTRODUCTION . 7
1 Scope . 8
2 Normative references . 8
3 Terms and definitions . 9
4 Symbols and abbreviated terms . 11
5 Outline of method . 11
6 Instrumentation . 12
6.1 Sound measurement system . 12
6.1.1 General . 12
6.1.2 Frequency range . 13
6.1.3 Sensitivity and dynamic range . 13
6.1.4 Hydrophone directionality . 13
6.1.5 Data acquisition and playback system . 13
6.1.6 Calibration . 13
6.2 Deployment platforms for sound measurement systems . 14
6.2.1 Fixed platforms . 14
6.2.2 Drifting platforms . 14
6.2.3 Flow-noise and self-noise minimization . 16
6.3 Contextual measurements . 16
6.3.1 General . 16
6.3.2 Winds . 16
6.3.3 Waves . 17
6.3.4 Currents . 17
6.3.5 Sound speed profiles . 18
6.3.6 Marine energy converter output . 18
7 Measurements and measurement procedures . 19
7.1 Metocean conditions . 19
7.1.1 General . 19
7.1.2 Winds . 19
7.1.3 Waves . 19
7.1.4 Currents . 19
7.2 Potential sources of acoustic masking . 19
7.2.1 General . 19
7.2.2 Vessel noise . 20
7.2.3 Biological noise sources . 20
7.2.4 Precipitation . 20
7.2.5 Air traffic . 20
7.2.6 Physical sources. 20
7.3 Underwater sound from marine energy converters . 20
7.3.1 Levels of characterization . 20
7.3.2 Measurement frequency range. 20
7.4 Wave energy converters . 21
7.4.1 WEC characteristics . 21
7.4.2 Sound measurement system deployment . 22
7.4.3 Temporal resolution . 22

7.4.4 Spatial resolution . 22
7.4.5 Sound speed profiles . 23
7.5 Current energy converters . 23
7.5.1 CEC characteristics . 23
7.5.2 Sound measurement system deployment . 23
7.5.3 Temporal resolution . 24
7.5.4 Spatial resolution . 24
7.5.5 Sound speed profiles . 25
7.6 Ocean thermal energy converters . 25
7.6.1 Overview . 25
7.6.2 Sound measurement system deployment . 26
7.6.3 Temporal resolution . 26
7.6.4 Spatial resolution . 26
7.6.5 Sound speed profiles . 27
8 Data analysis procedures . 27
8.1 General . 27
8.2 Metocean conditions . 27
8.2.1 Winds . 27
8.2.2 Waves . 28
8.2.3 Currents . 28
8.3 Sound speed profiles . 28
8.4 Marine energy converter output. 28
8.4.1 General . 28
8.4.2 Wave energy converters . 28
8.4.3 Current energy converters . 28
8.4.4 Ocean thermal energy converters . 28
8.5 Underwater sound . 29
8.5.1 General . 29
8.5.2 Acoustic signal processing. 29
8.5.3 Geo-referencing of drifting acoustic measurements . 30
8.5.4 Global sample acceptance criteria . 30
8.5.5 Considerations specific to wave energy converters . 31
8.5.6 Considerations specific to current energy converters . 32
8.5.7 Considerations specific to ocean thermal energy converters . 32
8.5.8 Aggregate statistics . 33
9 Information to be reported . 33
9.1 Sound measurement system . 33
9.2 Marine energy conversion system . 34
9.3 Measurement site . 34
9.4 Contextual measurements . 34
9.5 Specific reporting for wave energy converters . 35
9.5.1 Level A . 35
9.5.2 Level B . 37
9.6 Specific reporting for current energy converters . 37
9.6.1 Level A . 37
9.6.2 Level B . 37
9.7 Specific reporting for ocean thermal energy converters . 37
9.7.1 Level A . 37
9.7.2 Level B . 38

– 4 – IEC TS 62600-40:2019 © IEC 2019
Annex A (informative)  Sound within and a
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