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
๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 4871 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 4871 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 4871 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 4871 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 4871 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 4871 ๐Ÿ‡ฉ๐Ÿ‡ช DIN EN ISO 11201 ๐Ÿ‡ฌ๐Ÿ‡ง BS EN ISO 11201 ๐Ÿ‡ซ๐Ÿ‡ท NF EN ISO 11201 ๐Ÿ‡ฎ๐Ÿ‡น UNI EN ISO 11201 ๐Ÿ‡ช๐Ÿ‡ธ UNE EN ISO 11201 ๐Ÿ‡ณ๐Ÿ‡ฑ NEN EN ISO 11201
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ELANOVA LAB

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COFRAC 1-0076 Vitry-Sur-Seine, FR
DIN ISO 1817 DIN EN 15188 DIN ISO 1431-1 DIN EN 14671 DIN EN ISO 10140-2 + 3 more
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EOLIA

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COFRAC 1-2416 La Ciotat, FR
DIN EN 12469 NF S 90-351 NF X 44-201 (Octobre 1984) pour PSM BS EN ISO 14644-1:2015 ISO 14644-3
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COFRAC 1-1147 Sainte-Croix-En-Plaine, FR
DIN EN ISO 6888-1 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 DIN EN ISO 19020 + 3 more
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COFRAC 1-1592 Bagneux, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de la NF X 46-032 NF X46-031
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COFRAC 1-1593 Henin-Beaumont, FR
NF X 43-269 โ€“ Annexe K NF X 43-050 NF X43-050 (parties utiles de la
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COFRAC 1-5597 Nantes Cedex 03, FR
NF X43-050 (parties utiles de NF X 43-050 NF X 43-269 - Annexe K NF EN 14346 โ€“ NF X43-050 (parties utiles de la
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COFRAC 1-5922 Vergeze, FR
NF X 43-269 โ€“ Annexe K NF X 43-050 NF X 43-269 - Annexe K NF X43-050 (parties utiles de la
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COFRAC 1-1591 Saint Etienne, FR
NF X 43-269 - Annexe K NF X 43-269 โ€“ Annexe K NF X 43-050 NF X43-050 (parties utiles de la NF X43-050 (parties + 1 more
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COFRAC 1-5840 Gradignan, FR
NF X 43-269 - Annexe K NF X 43-269 โ€“ Annexe K NF X 43-050 NF X43-050 (parties utiles de la NF ISO 21363
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COFRAC 1-1488 Saverne, FR
DIN EN ISO 14403-2 DIN ISO 11464 DIN ISO 11465 NF T90-105-2 NF T90-004 + 3 more
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COFRAC 1-0685 Maxeville, FR
DIN ISO 17289 NF X 31-615 DIN EN ISO 7027-2 DIN EN ISO 10523 DIN EN ISO 7393-2 + 3 more
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COFRAC 1-2202 Douai, FR
NF T90-111 DIN EN ISO 14403-2 NF T 90-412 DIN EN ISO 7899-1 NF-T 90-029 + 3 more
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COFRAC 1-0888 Rosporden, FR
VDE 414-9-11 DIN EN ISO 10304-1 NF X 31-615 ISO 5815-1 NF T90-015-1 + 3 more
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COFRAC 1-2243 Vennecy, FR
DIN EN ISO 21528-2 DIN EN ISO 6888-1 0.95) based on BS ISO 21527-2:2008 DIN EN ISO 6888-2 DIN ISO 16649-2 + 3 more
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COFRAC 1-2452 Moulins, FR
DIN EN ISO 17294-2 DIN EN ISO 13395 NF T 90-412 NF U47-101 DIN EN ISO 7899-1 + 3 more
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COFRAC 1-6881 Les Milles, FR
DIN ISO 11665-4 DIN EN ISO 7932 DIN 53483-2 DIN EN ISO 15213-2 NF V08-050 + 3 more
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COFRAC 1-2241 Douai Cedex, FR
DIN EN ISO 6888-1 DIN EN ISO 21528-2 DIN EN ISO 6888-2 DIN ISO 16649-2 NF V08-054 + 3 more
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COFRAC 1-1830 Nantes, FR
DIN EN ISO 21528-1 NF V08-401 DIN ISO 16649-1 DIN EN ISO 6888-1 DIN EN ISO 21528-2 + 3 more
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EUROFINS LCDI

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COFRAC 1-0965 Marange-Silvange, FR
DIN EN ISO 13395 DIN EN ISO 10304-1 ISO 5815-1 NF T90-015-1 DIN EN ISO 10523 + 3 more
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COFRAC 1-5943 Nantes, FR
NF X 43-269 NF X 43-050 ISO ISO 16000-7
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COFRAC 1-7268 Seichamps, FR
DIN ISO 17289 NF T 90-260 NF X 31-615 (Uniquement DIN EN ISO 10523 DIN EN 27888
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COFRAC 1-0201 Bordeaux, FR
DIN EN 947 ISO 24339 DIN CEN TS 15119-2 DIN EN ISO 3741 NF P 20-501 + 3 more
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COFRAC 1-6839 Champs-Sur-Marne, FR
NF EN 716-1/-2 NF EN 12221-1/-2 NF EN 14988-1/-2 DIN 51130 DIN EN 12227 + 3 more
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COFRAC 1-6017 Marseille, FR
DIN 51750-3 NF X 43-269 โ€“ NF X 43-050 NF X43-050 (parties utiles de la DIN EN 15002
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COFRAC 1-1185 Capelle-La-Grande, FR
NF T90-111 DIN EN ISO 17294-2 DIN EN ISO 14403-2 NF EN ISO 19340 DIN EN ISO 10304-1 + 3 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 โ€” Declaration and verification of noise emission values of machinery and equipment
  • ISO 11201 Acoustics โ€” Noise emitted by machinery and equipment โ€” Measurement of emission sound pressure levels at a work station and at other specified positions
  • IEC 61672-1 Electroacoustics โ€” Sound level meters โ€” Part 1: Specifications

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