Standard

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AS/NZS 1269.1:2005

[Current]

Occupational noise management, Part 1: Measurement and assessment of noise immission and exposure

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.

Published: 06/04/2005

Pages: 42

Table of contents

Cited references

Content history

Table of contents

Header

About this publication

Preface

1 Scope

2 Referenced documents

3 Definitions

4 Measures of noise emission, immission and exposure

4.1 Measures of emission (of a source)

4.2 Measures of immission and exposure

4.2.1 General

4.2.2 Immission (at a location)

4.2.3 Exposure (of a person)

5 Objective of noise assessments

6 Types of noise assessment

6.1 Assessment of exposure to noise

6.1.1 General

6.1.2 Preliminary assessment

6.1.3 Detailed assessment

6.1.4 Follow-up assessments

6.2 Assessment for noise reduction

6.3 Assessment for personal hearing protector program

6.4 Assessment of noise exposure from headphones or insert earphones

7 Instrumentation and calibration

7.1 General

7.2 Integrating-averaging sound level meter

7.3 Personal sound exposure meter (PSEM)

7.4 Non-integrating sound level meter

7.5 Instruments for the measurement of peak sound pressure level

7.6 Reference sound sources

7.7 Octave-band filters

7.8 Auxiliary instruments

7.9 Auxiliary equipment

7.10 Calibration

8 Noise measurement procedures

8.1 General

8.2 Field reference level checking

8.3 Procedures for assessment of noise exposure

8.3.1 General

8.3.2 Measurement of LAeq,T

8.3.3 Measurement of EA,Ti

8.3.4 Measurement of peak sound pressure level

8.3.5 Microphone locations

8.4 Measurement period

8.5 Measurement procedure for selection of hearing protectors

8.6 Frequency analysis

8.7 Infrasound and ultrasound

8.8 Noise measurements in hazardous environments

9 Noise evaluation

9.1 Determination of EA,T

9.2 Determination of LAeq,T

9.3 Determination of LAeq,8h

9.4 Extended workshifts

9.5 Determination of L(Aeq,8h)n

9.6 Determination of L(norm)Aeq,8h

9.7 Noise exposure of groups

9.8 Assessment data to be recorded

10 Checklists

Appendix A

Appendix B

B1 General

B2 Basic acoustics

B3 Analysis of sound waves

B4 Sound measurement instrumentation

B5 Need for noise control

B6 Evaluation of noise

B7 Practical noise assessments

B8 Other noise measurements

B9 Noise reduction

B10 Statutory requirements and guidance literature

Appendix C

C1 Recommended measurement procedure

C2 Conversion of measured levels to equivalent diffuse field levels

C3 Alternative method of measurement for headphones

C4 Probe-tube microphone measurements

C5 Bibliography

Appendix D

D1 Auxiliary equipment

D2 Graphic level recorder

D3 Tape recorder

D3.1 General characteristics

D3.2 Precautions when selecting or using a tape recorder

D4 Frequency spectrum analyser

D5 Solid state recording instrumentation

Appendix E

E1 Partial noise exposure

E2 Determination of EA,T

E3 Determination of LAeq,T

E4 Determination of LAeq,8h

E5 Determination of L(Aeq,8h)n

E6 Determination of L(norm)Aeq,8h

E7 Examples

E7.1 General

E7.2 Calculation using Table E2

E7.2.1 EA,T

E7.2.2 LAeq,T

E7.2.3 LAeq,8h

E7.3 Calculations using the equations in Clause 9

E7.3.1 EA,T

E7.3.2 LAeq,T

E7.3.3 LAeq,8h

E8 Example of calculation of average daily noise exposure for 5 working days of varying daily exposures to noise (L(Aeq,8h)5)

E8.1 Example levels

E8.2 Calculation using conversion Appendix F

E8.3 Calculation using the equation in Clause 9.5

E9 Example of calculation of noise exposure level normalized to a five day working week

E9.1 Example levels

E9.2 Calculation using conversion Appendix F

E9.3 Calculation using the equation in Clause 9.6

Appendix F

Appendix G

Amendment control sheet

AS/NZS 1269.1:2005

Amendment No. 1 (2005)

Correction

Cited references in this standard

AS 1259.1-1990

[Available Superseded]

Acoustics - Sound level meters, Part 1: Non-integrating

AS/NZS 1269.3:2005

[Current]

Occupational noise management, Part 3: Hearing protector program

AS 1259.2-1990

[Superseded]

Acoustics — Sound level meters, Part 2: Integrating — Averaging

AS 1591.5-1987

[Withdrawn]

Acoustics — Instrumentation for audiometry, Part 5: Wide band artificial ear

AS 2533-2002

[Withdrawn]

Acoustics — Preferred frequencies and band centre frequencies

Content history

AS/NZS 1269.1:2005 AMDT 1

[Current]

AS/NZS 1269.1:1998

[Superseded]

DR 04035

AS/NZS 1269.1-2005 AMDT 1

AS/NZS 1269.1:2005 Rec:2016

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