ISO 9612:2009

Occupational Noise Exposure Measurement

This standard specifies methods for measuring and assessing noise exposure of workers in occupational environments to determine compliance with exposure limits and identify hearing protection needs. The measurement protocols account for temporal variations in noise and worker movement to characterize daily noise exposure levels. Results are critical for occupational health and safety compliance, hearing loss prevention programs, and workplace risk assessment. Accredited laboratories ensure measurement uncertainty, calibration standards, and data interpretation meet regulatory requirements for legal and health-safety defensibility.

What it measures

  • Equivalent continuous A-weighted sound pressure level (Leq,8h)
  • Peak sound pressure levels and impulsive noise
  • Daily noise exposure level (LEX,8h)
  • Frequency-weighted noise exposure
🇩🇪 DIN EN ISO 4871 🇬🇧 BS EN ISO 4871 🇫🇷 NF EN ISO 4871 🇮🇹 UNI EN ISO 4871 🇪🇸 UNE EN ISO 4871 🇳🇱 NEN EN ISO 4871 🇩🇪 DIN EN ISO 11201 🇬🇧 BS EN ISO 11201 🇫🇷 NF EN ISO 11201 🇮🇹 UNI EN ISO 11201 🇪🇸 UNE EN ISO 11201 🇳🇱 NEN EN ISO 11201
1,868 Accredited labs
20 Countries

Showing 151–175 of 1,868 labs

UKAS 0422 Warrington, GB
a) BS 7270:2006 b) BS 3518-3:1963 (Withdrawn) ASTM E1820-18ae1 (Withdrawn) ISO 6892-2 BS EN ISO 204 + 2 more
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AmiaLab

Active
COFRAC 1-6573 Bagnols Sur Ceze, FR
NF X43-050 (parties utiles de NF X 43-050 NF X 43-269 –
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UKAS 0350 Newhaven, GB
Appendix 5 of HSG 227 (2004))
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UKAS 2713 Newhaven, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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DAkkS D-PL-14501-01-03 Fürth, DE
DIN 19698-1 DIN 19698-2 DIN EN ISO 54321 DIN EN 1744-3 DIN EN 12457-2 + 3 more
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UKAS 0934 Neath, GB
(HSG 248) – 2021 ANC/AS/2 based on HSG 248 DIN EN 14791 IEC 60519-11 DIN EN 13284-1 + 3 more
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UKAS 0165 Neath, GB
(HSG 264, 2012)
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UKAS 4147 Bellshill, GB
requirements of HTM 01-06 Part E 35 °C/3 days based on HTM 2030 Part E, WHTM 01-06 Part E & BS EN ISO 15883-4 using R2A and Part E, HTM 0106 Part E, WHTM 01- + 3 more
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UKAS 4116 Brighton, GB
ISO 7171 ISO 1407 BS EN ISO 140-4:1998 BS EN ISO 717-2:2020
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UKAS 30171 Bradford-on-Avon, GB
TORQUE FORCE DC VOLTAGE
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UKAS 4051 Gateshead, GB
BS EN ISO 16283-1:2014+A1:2017BS EN ISO BS EN ISO 16283-2:2020 HTM 08-01 - 2013 BS EN ISO 140-4:1998 BS EN ISO 717-2:2020 + 2 more
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RvA I251 Rotterdam, NL
DIN EN 16407-1 BS EN ISO 10675-1 ÖNORM EN ISO 17636-1 NEN-EN 12732 ÖNORM EN ISO 17636-2 + 3 more
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COFRAC 1-6770 Grande Synthe, FR
DIN EN ISO 6507-1 DIN EN ISO 6508-1 NF T90-111 EN 13087-2 DIN EN 10325 + 3 more
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COFRAC 1-6771 Florange, FR
DIN EN ISO 6508-1 NF T90-111 EN 13087-2 ISO 15705 DIN EN ISO 10523 + 3 more
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DAkkS D-K-17702-01-00 Garching, DE
Charpy impact test (ISO 148-1) Salt spray / neutral salt fog test (ISO Radiated emissions (CISPR 32) 1) In den CMC sind die erweiterten Messu
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Asbestobel

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UKAS 8502 Nottingham, GB
(HSG 264, 2012)
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UKAS 10243 Fowlmere, GB
Analysts’ Guide (HSG 248) (PCM) based on HSG 248
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UKAS 5835 Prestwick, GB
(HSG 264, 2012)
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UKAS 2230 Prestwick, GB
(HSG 248) – 2021 LSD.ASB.02 based on HSG 248 LSD.ASB.04 based on HSG 248 (PCM) based on HSG 248
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UKAS 10194 Hockliffe, GB
Analysts’ Guide (HSG 248 (PCM) based on HSG 248
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UKAS 0298 East Kilbride, GB
(HSG 264, 2012)
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UKAS 24642 Mansfield Woodhouse, GB
(HSG 264, 2012)
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UKAS 0472 Grays, GB
(HSG 248) – 2021 QOP03 based on HSG 248 (PCM) based on HSG 248 (PCM) based on HSG 248) QOP01 based on HSG 248 + 1 more
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UKAS 10792 Mansfield Woodhouse, GB
(HSG 248) – 2021 (PCM) based on HSG 248
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UKAS 6958 Witney, GB
(HSG 264, 2012) (HSG 248) – 2021
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Industries

Manufacturing and industrial production Construction and heavy equipment operation Mining and quarrying operations Transportation and logistics Entertainment and live event production

Related Standards

  • ISO 4871 Acoustics — Declaration and verification of noise emission values of machinery and equipment
  • ISO 11201 Acoustics — Noise emitted by machinery and equipment — Measurement of emission sound pressure levels at a work station and at other specified positions
  • IEC 61672-1 Electroacoustics — Sound level meters — Part 1: Specifications

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