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Noise Exposure Safety Standards

Noise Exposure Safety Standards guide the measurement and assessment of noise levels, potentially leading to the determination that a noise safety program is required, or gauging the ongoing results of a noise safety program. The standardization of noise measurement techniques allows for results to be confidently compared against each other. Furthermore, standards set out measurement techniques that are designed to provide valuable information regarding how human physiology in particular is affected by noise, rather than simply measuring decibels.

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ISO 13474:2009

Acoustics - Framework for calculating a distribution of sound exposure levels for impulsive sound events for the purposes of environmental noise assessment

ISO 13474:2009 specifies the framework of an engineering method for calculating a statistical distribution of sound exposure levels for impulsive sound events for the purposes of environmental noise assessment. It is applicable to impulse sounds propagating over large distances (e.g. 0,5 km to 30 km) from sources, such as mine blasting, artillery fire and bomb explosions, using conventional explosives of moderate charge mass (e.g. 0,05 kg to 1 000 kg of TNT equivalent). The effects of meteorological conditions and terrain upon sound propagation are considered.


ISO 1999:2013

Acoustics - Estimation of noise-induced hearing loss

ISO 1999:2013 specifies a method for calculating the expected noise-induced permanent threshold shift in the hearing threshold levels of adult populations due to various levels and durations of noise exposure; it provides the basis for calculating hearing disability according to various formulae when the hearing threshold levels at commonly measured audiometric frequencies, or combinations of such frequencies, exceed a certain value. The measure of exposure to noise for a population at risk is the noise exposure level normalized to a nominal 8 h working day, LEX,8h, for a given number of years of exposure. ISO 1999:2013 applies to noise at frequencies less than approximately 10 kHz which is steady, intermittent, fluctuating, irregular. Use of ISO 1999:2013 for sound pressures exceeding 200 Pa (140 dB relative to 20 µPa) is recognized as extrapolation.


ISO 5131:2015

Tractors for agriculture and forestry - Measurement of noise at the operators position - Survey method

ISO 5131:2015 specifies a method for the measuring and reporting of the noise at the operator(s) position of a tractor used in agriculture and forestry. The measured noise relates only to the basic machine and applies to tractors with machine-carried operators. The results provide information to the operator(s) in order to avoid exposing themselves to noise levels that could put their hearing at risk. The conditions specified for the operation of the machines during the measurements are defined to provide a realistic and repeatable assessment of the maximum noise an operator should be subjected to when operating a machine. The test procedures specified in this International Standard are survey methods as defined in ISO 12001.


ISO 9612:2009

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.


ANSI/ASA S3.44-2016/Part 1 / ISO 1999:2013 (MOD)

Acoustics - Estimation of Noise-induced Hearing Loss - Part 1: Method for Calculating Expected Noise-induced Permanent Threshold Shift (a modified nationally adopted international standard)

ANSI/ASA S3.44 2016/Part 1/ISO 1999:2013 (MOD) specifies a method for calculating the expected noise induced permanent threshold shift in the hearing threshold levels of adult populations due to various levels and durations of noise exposure; it provides the basis for calculating hearing disability according to various formulae when the hearing threshold levels at commonly measured audiometric frequencies, or combinations of such frequencies, exceed a certain value. This modified standard allows an equivalent effective level (EEL), with a different exchange rate, to be substituted for LEX,8h.


BS 5502-32:1990

Buildings and structures for agriculture. Guide to noise attenuation (British Standard)

Guidance on aspects of controlling noise pollution in relation to the design and construction of agricultural buildings and structures. Does not cover specific equipment installed and used in agricultural buildings.


CSA Z107.56 2018

Measurement of noise exposure

Preface This is the fourth edition of CSA Z107.56, Measurement of noise exposure, which is part of the CSA Z107 series of Standards on workplace noise control, vibration control, and occupational audiology. This edition supersedes the third edition, entitled Procedures for the measurement of occupational noise exposure, published in 2006, and previous editions published in 1994 and 1986. Scope 1.1 This Standard describes procedures for determining the occupational noise exposure level of workers (Lex,T) using sampling techniques. Lex,T represents the long-term noise exposure of workers and is calculated from measurements of Leq,t in the workplace. Notes: 1) Noise exposure has been expressed as % dose in the past. However, the use of Leq,t is recommended, as it is more convenient and less likely to be misunderstood. 2) The procedures in this Standard normally form part of any occupational hearing conservation program. Users of this Standard should be proficient in noise measurement. 1.2 This Standard provides procedures for measuring the occupational noise exposure from all types of noise, e.g., continuous noise, tonal noise, and impulsive noise. All types of noise (including impulsive noise) are included in a single equivalent sound level for an individual or group. Note: Although this Standard was written to measure noise exposure in the workplace, it can equally be used to measure non-occupational noise exposures, including those from music players, radios or other sound reproduction devices. 1.3 This Standard can be used to determine the noise exposure level of individuals (Lex,T) or extended to groups (LGroup) with similar noise exposures. It can also be used to measure the average noise (Leq,t) from a given job or activity (e.g., operating a particular machine). 1.4 This Standard provides for measurements in terms of equivalent sound level, Leq,t (3 dB exchange rate), and calculation of noise exposure level, Lex,T, regardless of noise type. Procedures for calculating related quantities, such as % dose, are provided. This Standard may also be used to measure LOSHA (5 dB exchange rate) and calculate the associated indices as shown in Annex D. In this case, the results may not be a good representation of exposure to impulsive noise. Note: Measurements taken in Leq cannot be converted to LOSHA , or vice versa, unless the time distribution of sound levels is known. 1.5 This Standard provides procedures to determine the noise exposure level of workers with a given precision. In certain cases, the user is only interested in determining that a worker's exposure is above or below the criterion level. Therefore, the procedures in this Standard can be less rigorously applied when the noise exposure level is either far above or far below the criterion level. 1.6 In CSA Standards, "shall" is used to express a requirement, i.e., a provision that the user is obliged to satisfy in order to comply with the standard; "should" is used to express a recommendation or that which is advised but not required; "may" is used to express an option or that which is permissible within the limits of the standard; and "can" is used to express possibility or capability. Notes accompanying clauses do not include requirements or alternative requirements; the purpose of a note accompanying a clause is to separate from the text explanatory or informative material. Notes to tables and figures are considered part of the table or figure and may be written as requirements. Annexes are designated normative (mandatory) or informative (non-mandatory) to define their application.


AS/NZS 1269.0:2005 (R2016)

Occupational noise management - Overview and general requirements (FOREIGN STANDARD)

Provides an overview and general requirements for the occupational noise management series of Standards. RECONFIRMATION NOTICE Technical Committee AV-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 7 December 2015. Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 18 May 2016. The following are represented on Technical Committee AV-003: Accident Compensation Corporation (New Zealand) Association of Australian Acoustical Consultants Australian Acoustical Society Australian Chamber of Commerce and Industry Australian Council of Trade Unions Department of Defence (Australian Government) Engineers Australia Ministry of Health (NZ) National Acoustic Laboratories New South Wales Nurses' Association New Zealand Audiological Society Worksafe Division, Department of Commerce, Western Australia WorkSafe Victoria


AS/NZS 1269.1:2005 (R2016)

Occupational noise management - Measurement and assessment of noise immission and exposure (FOREIGN STANDARD)

Sets out requirements for, and provides guidance on, the types of noise assessments which may be necessary and suitable noise measuring instruments to carry them out. The procedures for noise measurement are also included. RECONFIRMATION NOTICE Technical Committee AV-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 7 December 2015. Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 18 May 2016. The following are represented on Technical Committee AV-003: Accident Compensation Corporation (New Zealand) Association of Australian Acoustical Consultants Australian Acoustical Society Australian Chamber of Commerce and Industry Australian Council of Trade Unions Department of Defence (Australian Government) Engineers Australia Ministry of Health (NZ) National Acoustic Laboratories New South Wales Nurses' Association New Zealand Audiological Society Worksafe Division, Department of Commerce, Western Australia WorkSafe Victoria


AS/NZS 1269.2:2005 (R2016)

Occupational noise management - Noise control management (FOREIGN STANDARD)

Sets outs requirements and guidance on the management of noise control in occupational settings and applies to all types of workplaces and to all types of sounds. RECONFIRMATION NOTICE Technical Committee AV-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 7 December 2015. Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 18 May 2016. The following are represented on Technical Committee AV-003: Accident Compensation Corporation (New Zealand) Association of Australian Acoustical Consultants Australian Acoustical Society Australian Chamber of Commerce and Industry Australian Council of Trade Unions Department of Defence (Australian Government) Engineers Australia Ministry of Health (NZ) National Acoustic Laboratories New South Wales Nurses' Association New Zealand Audiological Society Worksafe Division, Department of Commerce, Western Australia WorkSafe Victoria


AS/NZS 1269.3:2005 (R2016)

Occupational noise management - Hearing protector program (FOREIGN STANDARD)

Specifies administrative responsibilities associated with a hearing protector program; the selection, use and maintenance of various types of hearing protectors; and training and motivation in regard to hearing protector programs. RECONFIRMATION NOTICE Technical Committee AV-003 has reviewed the content of this publication and in accordance with Standards Australia procedures for reconfirmation, it has been determined that the publication is still valid and does not require change. Certain documents referenced in the publication may have been amended since the original date of publication. Users are advised to ensure that they are using the latest versions of such documents as appropriate, unless advised otherwise in this Reconfirmation Notice. Approved for reconfirmation in accordance with Standards Australia procedures for reconfirmation on 7 December 2015. Approved for reconfirmation in New Zealand on behalf of the Standards Council of New Zealand on 18 May 2016. The following are represented on Technical Committee AV-003: Accident Compensation Corporation (New Zealand) Association of Australian Acoustical Consultants Australian Acoustical Society Australian Chamber of Commerce and Industry Australian Council of Trade Unions Department of Defence (Australian Government) Engineers Australia Ministry of Health (NZ) National Acoustic Laboratories New South Wales Nurses' Association New Zealand Audiological Society Worksafe Division, Department of Commerce, Western Australia WorkSafe Victoria


AS/NZS 1269.4:2014

Occupational noise management - Auditory assessment (FOREIGN STANDARD)

Specifies procedures and requirements for air conduction pure-tone audiometry (without masking) that are applicable to individuals whose hearing sensitivity might be adversely affected by occupational noise exposure and/or ototoxic agents


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