1 - AS/NZS 1269.1:1998 OCCUPATIONAL NOISE MANAGEMENT - MEASUREMENT AND ASSESSMENT OF NOISE IMMISSION AND EXPOSURE
4 - PREFACE
5 - CONTENTS
6 - 1 SCOPE
6 - 2 REFERENCED DOCUMENTS
7 - 3 DEFINITIONS
7 - 3.1 A-weighted noise exposure
7 - 3.2 Eight-hour equivalent continuous A-weighted sound pressure level
8 - 3.3 Equivalent continuous weighted sound pressure level
8 - 3.4 Partial noise exposure
8 - 3.5 Peak sound pressure level
8 - 3.6 Reference sound source
8 - 3.7 Representative working day
8 - 3.8 Sound level or weighted sound pressure level
8 - 3.9 Sound pressure level (SPL)
9 - 3.10 Total daily noise exposure
9 - 4 MEASURES OF NOISE EMISSION, IMMISSION AND EXPOSURE
9 - 4.1 Measures of emission (of a source)
9 - 4.2 Measures of immission and exposure
9 - 4.2.1 General
9 - 4.2.2 Immission (at a location)
9 - 4.2.3 Exposure (of a person)
11 - 5 TYPES OF NOISE ASSESSMENT
11 - 5.1 Assessment of exposure to noise
11 - 5.1.1 General
11 - 5.1.2 Preliminary assessment
11 - 5.1.3 Detailed assessment
12 - 5.1.4 Follow-up assessment
12 - 5.2 Assessment for noise reduction
12 - 5.3 Assessment for personal hearing protector program
12 - 5.4 Assessment of noise exposure from headphones or insert earphones
12 - 6 INSTRUMENTATION AND CALIBRATION
12 - 6.1 General
13 - 6.2 Integrating-averaging sound level meter
13 - 6.3 Personal sound exposure meter (PSEM)
13 - 6.4 Non-integrating sound level meter
13 - 6.5 Instruments for the measurement of peak sound pressure level
13 - 6.6 Reference sound sources
13 - 6.7 Octave-band filters
13 - 6.8 Auxiliary instruments
14 - 6.9 Auxiliary equipment
14 - 6.10 Calibration
14 - 7 NOISE MEASUREMENT PROCEDURES
14 - 7.1 General
14 - 7.2 Field reference level checking
14 - 7.3 Procedures for assessment of noise exposure
14 - 7.3.1 General
14 - 7.3.2 Measurement of ...
15 - 7.3.3 Measurement of ...
15 - 7.3.4 Measurement of peak sound pressure level
15 - 7.3.5 Microphone locations
15 - 7.4 Measurement period
16 - 7.5 Measurement procedure for selection of hearing protectors
17 - 7.6 Frequency analysis
17 - 7.7 Infrasound and ultrasound
17 - 7.8 Noise measurements in hazardous environments
17 - 8 NOISE EVALUATION
17 - 8.1 Determination of E(A,T)
18 - 8.2 Determination of L(Aeq,T)
18 - 8.3 Determination of L(Aeq,8h)
18 - 8.4 Extended workshifts
19 - 8.5 Determination of L(Aeq,8h)n
19 - 8.6 Determination of L(norm)Aeq,8h
19 - 8.7 Noise exposure of groups
20 - 8.8 Assessment data to be recorded
20 - 9 CHECKLISTS
23 - APPENDIX A - COMPETENCY AND TRAINING OF PEOPLE UNDERTAKING DETAILED NOISE ASSESSMENTS
24 - APPENDIX B - TOPICS RECOMMENDED FOR INCLUSION IN A TRAINING COURSE FOR NOISE ASSESSMENT
24 - B1 GENERAL
24 - B2 BASIC ACOUSTICS
24 - B3 ANALYSIS OF SOUND WAVES
24 - B4 SOUND MEASUREMENT INSTRUMENTATION
25 - B5 NEED FOR NOISE CONTROL
25 - B6 EVALUATION OF NOISE
25 - B7 PRACTICAL NOISE ASSESSMENTS
25 - B8 OTHER NOISE MEASUREMENTS
25 - B9 NOISE REDUCTION
25 - B10 STATUTORY REQUIREMENTS AND GUIDANCE LITERATURE
26 - APPENDIX C - RECOMMENDED PROCEDURES FOR MEASUREMENT OF SOUND PRESSURE LEVELS FROM HEADPHONES OR INSERT EARPHONES
26 - C1 RECOMMENDED MEASUREMENT PROCEDURE
26 - C2 CONVERSION OF MEASURED LEVELS TO EQUIVALENT DIFFUSE FIELD LEVELS
26 - C3 ALTERNATIVE METHOD OF MEASUREMENT FOR HEADPHONES
27 - C4 PROBE-TUBE MICROPHONE MEASUREMENTS
27 - C5 FURTHER READING
28 - APPENDIX D - GENERAL INFORMATION ON AUXILIARY MEASURING DEVICES
28 - D1 AUXILIARY EQUIPMENT
28 - D2 GRAPHIC LEVEL RECORDER
28 - D3 TAPE RECORDER
28 - D3.1 General characteristics
28 - D3.2 Precautions when selecting or using a tape recorder
29 - D4 FREQUENCY SPECTRUM ANALYSER
29 - D5 SOLID STATE RECORDING INSTRUMENTATION
31 - APPENDIX E - PROCEDURE FOR DETERMINATION OF E(A,T), L(Aeq,T) AND L(Aeq,8h)
31 - E1 PARTIAL NOISE EXPOSURE
31 - E2 DETERMINATION OF E(A,T)
31 - E3 DETERMINATION OF L(Aeq,T)
31 - E4 DETERMINATION OF L(Aeq,8h)
32 - E5 DETERMINATION OF L(Aeq,8h)n.
32 - E6 DETERMINATION OF L(norm)Aeq,8h
32 - E7 EXAMPLES
32 - E7.1 General
33 - E7.2 CALCULATION USING TABLE E2
34 - E7.3 CALCULATIONS USING THE EQUATIONS IN CLAUSE 8
36 - E8 EXAMPLE OF CALCULATION OF AVERAGE DAILY NOISE EXPOSURE FOR 5 WORKING DAYS OF VARYING DAILY EXPOSURES TO NOISE
36 - E8.1 Example levels
36 - E8.2 Calculation using conversion Appendix F
37 - E8.3 Calculation using the equation in Clause 8.5
37 - E9 EXAMPLE OF CALCULATION OF NOISE EXPOSURE LEVEL NORMALIZED TO A FIVE DAY WORKING WEEK
37 - E9.1 Example levels
37 - E9.2 Calculation using conversion Appendix F
38 - E9.3 Calculation using the equation in Clause 8.6
39 - APPENDIX F - RELATIONSHIP BETWEEN L(Aeq,8h) AND E(A,T) VALUES
40 - APPENDIX G - NOISE ASSESSMENT REPORT PROFORMA