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EN ISO 9612:2009

Current
Current

The latest, up-to-date edition.

Acoustics - Determination of occupational noise exposure - Engineering method (ISO 9612:2009)
Published date

04-01-2009

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

ISO 9612:2009 specifies an engineering method for measuring workers' exposure to noise in a working environment and calculating the noise exposure level. ISO 9612:2009 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. ISO 9612:2009 provides methods for estimating the uncertainty of the results.ISO 9612:2009 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 ISO 9612:2009 can provide useful information when defining priorities for noise control measures.

Committee
CEN/TC 211
DocumentType
Standard
PublisherName
Comite Europeen de Normalisation
Status
Current

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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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