NF EN ISO 9612

NF EN ISO 9612

June 2025
Standard Current

Acoustics - Determination of occupational noise exposure - Methodology

This document specifies a method for measuring workers? exposure to noise in a working environment and calculating the noise exposure level. This document deals with A-weighted levels but is applicable also to C-weighted levels. Three different strategies for measurement are specified. The method is applicable 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 document provides methods for estimating the uncertainty of the results.This document 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 document can provide useful information when defining priorities for noise control measures.

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Main informations

Collections

National standards and national normative documents

Thematics

Sécurité, QSE, Gestion des risques et SST

Publication date

June 2025

Number of pages

70 p.

Reference

NF EN ISO 9612

ICS Codes

13.140   Noise with respect to human beings
17.140.20   Noise emitted by machines and equipment

Classification index

S31-084

Print number

1

International kinship

ISO 9612:2025

European kinship

EN ISO 9612:2025
Sumary
Acoustics - Determination of occupational noise exposure - Methodology

This document specifies a method for measuring workers? exposure to noise in a working environment and calculating the noise exposure level. This document deals with A-weighted levels but is applicable also to C-weighted levels. Three different strategies for measurement are specified. The method is applicable 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 document provides methods for estimating the uncertainty of the results.

This document 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 document can provide useful information when defining priorities for noise control measures.

Replaced standards (1)
NF EN ISO 9612
May 2009
Standard Cancelled
Acoustics - Determination of occupational noise exposure - Engineering method

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.

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