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
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COFRAC 1-0606 Trappes Cedex, FR
DIN EN ISO 2505 ISO 18553 AMD 1 DIN EN 12099 ISO 13480 ISO 6964 + 3 more
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COFRAC 1-1531 Venissieux, FR
ISO 15202-3 NF X43-551 NF X 43-317 NF X 43-294 (juin DIN EN ISO 16017-2 + 3 more
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COFRAC 1-0641 Digne Les Bains Cedex, FR
DIN EN ISO 17604 DIN EN ISO 6888-1 DIN EN ISO 6888-2 DIN ISO 16649-2 BS ISO 15214:1998 + 3 more
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COFRAC 1-7427 Launaguet, FR
NF T90-111 DIN EN ISO 17294-2 DIN EN ISO 14403-2 DIN EN ISO 13395 VDE 414-9-11 + 3 more
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COFRAC 1-1157 Bonneuil Sur Marne, FR
EN 13087-2 NF T 90-003 DIN EN ISO 10523 NF T90-015-1 DIN EN 846-7 + 3 more
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COFRAC 1-1810 Vesoul, FR
NF T 90-412 DIN EN ISO 7899-1 VDE 414-9-11 DIN EN ISO 10304-1 DIN EN 12880 + 3 more
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COFRAC 1-0536 Arras Cedex, FR
DIN EN ISO 13395 DIN EN ISO 7899-1 DIN EN ISO 6888-2 ISO 5815-1 DIN EN ISO 10523 + 3 more
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COFRAC 1-1756 Saint Denis, FR
NF T 90-412 DIN EN ISO 7899-1 VDE 414-9-11 DIN EN ISO 10304-1 DIN EN ISO 16017-2 + 3 more
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COFRAC 1-1140 Dammarie Les Lys, FR
NF EN ISO 19340 DIN EN ISO 10304-1 DIN EN ISO 15061 ISO 5815-1 NF T 90-117 + 3 more
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COFRAC 1-0674 Laval Cedex, FR
DIN EN ISO 21528-2 DIN EN ISO 6888-2 DIN ISO 16649-2 DIN ISO 11665-4 NF T90-007 + 3 more
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COFRAC 1-0885 Hagnicourt, FR
NF T 90-412 DIN EN ISO 7899-1 NF U47-101 DIN EN ISO 10523 NF T90-015-2 + 3 more
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COFRAC 1-1519 Draguignan, FR
NF T 90-412 DIN EN ISO 7899-1 NF U47-101 DIN EN ISO 21528-2 DIN EN ISO 6888-2 + 3 more
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COFRAC 1-5018 Pompey, FR
ASTM E8/E 8M DIN EN 10002-1 DIN EN ISO 6892-2 ASTM A 370 (BS EN ISO 6892-1: 2019) + 3 more
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COFRAC 1-5570 Lille, FR
NF X 43-269 NF X 43-269 - Annexe K NF X 43-050 (parties utiles NF X 43-050 ISO 16000-7
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COFRAC 1-6512 Ajaccio Cedex 9, FR
DIN EN ISO 14403-2 DIN EN ISO 13395 DIN EN ISO 10304-1 DIN EN ISO 15061 ISO 5815-1 + 3 more
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COFRAC 1-1083 Toulon Armees, FR
NF X 43-050 DIN EN ISO 10703 DIN EN ISO 17294-2 DIN EN ISO 14403-2 DIN EN ISO 10704 + 3 more
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COFRAC 1-1931 Brest, FR
DIN EN ISO 17294-2 NF T 90-412 VDE 414-9-11 DIN EN ISO 10304-1 DIN EN ISO 9698 + 3 more
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COFRAC 1-6554 Voujeaucourt, FR
DIN EN ISO 17294-2 NF T 90-412 DIN EN ISO 7899-1 DIN EN ISO 10304-1 ISO 5815-1 + 3 more
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COFRAC 1-6567 Bordeaux Cedex, FR
DIN EN 27888 NF T 90-412 DIN EN ISO 7393-2 DIN EN 26461-2 DIN EN ISO 10523 + 3 more
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COFRAC 1-2314 Aix-En-Provence, FR
DIN EN 13725:2003-07 und Berichtigung
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COFRAC 1-6404 Clermont Ferrand, FR
DIN EN ISO 17294-2 DIN EN ISO 7899-1 VDE 414-9-11 DIN EN ISO 10304-1 DIN EN ISO 10523 + 3 more
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COFRAC 1-6419 Sainghin-En-Melantois, FR
DIN EN 17126 DIN EN 14562 DIN EN 14348 IEC 60127-5 DIN EN 14563 + 3 more
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COFRAC 1-6395 Cherbourg-En-Cotentin, FR
NF ISO 22262-1 (parties utiles de la NF X43-050 (parties utiles de NF ISO 22262-1 (parties utiles NF X43-050 (parties utiles de la
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COFRAC 1-1064 La Roche-Sur-Yon Cedex 9, FR
DIN ISO 11665-4 DIN 53483-2 DIN EN ISO 7937 NF V08-050 NF V 08-060 + 3 more
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COFRAC 1-5094 Grand Bourgtheroule, FR
NF X 43-050 NF X 43-269 - Annexe K NF ISO 22262-1 (parties utiles de NF X43-050 (parties utiles de la DIN EN 14346 + 1 more
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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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