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BS EN ISO 9612:2009

Current
Current

The latest, up-to-date edition.

Acoustics. Determination of occupational noise exposure. Engineering method
Available format(s)

Hardcopy , PDF

Language(s)

English

Published date

31-01-2018

Foreword
Introduction
1 Scope
2 Normative references
3 Terms and definitions
4 Symbols
5 Instrumentation
6 Methodology - Chronological steps
7 Work analysis
8 Selection of measurement strategies
9 Strategy 1 - Task-based measurement
10 Strategy 2 - Job-based measurement
11 Strategy 3 - Full-day measurement
12 Measurements
13 Sources of uncertainty
14 Calculation of measurement uncertainties and
   presentation of the final results
15 Information to be reported
Annex A (informative) - Example of a checklist to ensure that
        significant noise events are detected during the
        work analysis
Annex B (informative) - Guide to the selection of
        measurement strategy
Annex C (normative) - Evaluation of measurement
        uncertainties
Annex D (informative) - An example showing calculation of
        daily noise exposure level using task-based
        measurements
Annex E (informative) - An example showing calculation of
        daily noise exposure level using job-based
        measurements
Annex F (informative) - Sample calculation of daily noise
        exposure level using full-day measurements
Bibliography

Describes an engineering method for measuring workers' exposure to noise in a working environment and calculating the noise exposure level.

This International Standard specifies an engineering method for measuring workers’ exposure to noise in a working environment and calculating the noise exposure level. This International Standard deals with A-weighted levels but is applicable also to C-weighted levels. Three different strategies for measurement are specified. The method is useful where a determination of noise exposure to engineering grade is required, e.g. for detailed noise exposure studies or epidemiological studies of hearing damage or other adverse effects.

The measuring process requires observation and analysis of the noise exposure conditions so that the quality of the measurements can be controlled. This International Standard provides methods for estimating the uncertainty of the results.

This International Standard is not intended for assessment of masking of oral communication or assessment of infrasound, ultrasound and non-auditory effects of noise. It does not apply to the measurement of the noise exposure of the ear when hearing protectors are worn.

Results of the measurements performed in accordance with this International Standard can provide useful information when defining priorities for noise control measures.

Committee
EH/1/3
DevelopmentNote
Supersedes 07/30137110 DC. (07/2009)
DocumentType
Standard
Pages
52
PublisherName
British Standards Institution
Status
Current
Supersedes

Standards Relationship
EN ISO 9612:2009 Identical
ISO 9612:2009 Identical

ISO 11202:2010 Acoustics Noise emitted by machinery and equipment Determination of emission sound pressure levels at a work station and at other specified positions applying approximate environmental corrections
IEC 61252:1993+AMD1:2000+AMD2:2017 CSV Electroacoustics - Specifications for personal sound exposure meters
ISO 11200:2014 Acoustics Noise emitted by machinery and equipment Guidelines for the use of basic standards for the determination of emission sound pressure levels at a work station and at other specified positions
EN 458:2016 Hearing protectors - Recommendations for selection, use, care and maintenance - Guidance document
ISO/TR 25417:2007 Acoustics Definitions of basic quantities and terms
IEC 60942:2003 Electroacoustics - Sound calibrators
ISO 11904-2:2004 Acoustics Determination of sound immission from sound sources placed close to the ear Part 2: Technique using a manikin
ISO 4869-2:1994 Acoustics Hearing protectors Part 2: Estimation of effective A-weighted sound pressure levels when hearing protectors are worn
ISO 11205:2003 Acoustics — Noise emitted by machinery and equipment — Engineering method for the determination of emission sound pressure levels in situ at the work station and at other specified positions using sound intensity
ISO 11203:1995 Acoustics — Noise emitted by machinery and equipment — Determination of emission sound pressure levels at a work station and at other specified positions from the sound power level
ISO 1999:2013 Acoustics Estimation of noise-induced hearing loss
ISO 11904-1:2002 Acoustics — Determination of sound immission from sound sources placed close to the ear — Part 1: Technique using a microphone in a real ear (MIRE technique)
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
IEC 60651:1979+AMD1:1993+AMD2:2000 CSV Sound level meters
IEC 60804:2000 Integrating-averaging sound level meters
ISO/IEC Guide 98-3:2008 Uncertainty of measurement — Part 3: Guide to the expression of uncertainty in measurement (GUM:1995)

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