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
1,868 Accredited labs
20 Countries

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UKAS 0452 Bideford, GB
AC CURRENT AC VOLTAGE (continued) Measurement (continued) DC CURRENT Generation (continued) + 3 more
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UKAS 1574 York, GB
IEC 61000-6-1 IEC 61000-4-29: 2000 DIN EN 62233 IEC 61000-4-11: 2004 DIN EN 61000-4-12 + 3 more
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UKAS 2262 Ipswich, GB
ISO 6579-1 ISO 6888-1 ISO 16649-2 ISO 11290-1 1) AM/M/11-2 based on BS EN + 3 more
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UKAS 9659 Grimsby, GB
Method 15.2 based on BS EN ISO ISO 15213-2 Method 9.8 based on BS EN BS EN Method 5.11 based on BS EN ISO Method 4.3 based on BS EN ISO + 3 more
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UKAS 2622 Linlithgow Bridge, GB
ISO 6579-1 ISO 4832 EUMM 3.03 based on BS EN EUMM 3.07 based on BS EN ISO BS ISO 21528-2:2017 + 3 more
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UKAS 0342 Wolverhampton, GB
ISO 712 ISO 4833-1 on BS EN ISO 1736:2008 ISO 21528-2 BS ISO 4832:2006 + 3 more
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DAkkS D-ML-17481-01-01 Gelsenkirchen, DE
Thrombozytenfunktion Agomelatin Amisulprid (Psychopharmaka) Amitriptylin (TZA) Aripiprazol (Neuroleptika) + 3 more
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DAkkS D-ML-17480-01-01 Gelsenkirchen, DE
Thrombozytenfunktion Agomelatin Amisulprid (Psychopharmaka) Amitriptylin (TZA) Aripiprazol (Neuroleptika) + 3 more
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DAkkS D-PL-19438-01-00 Schwerte, DE
DIN EN 13141-4 DIN EN 13141-6 DIN EN 13141-7 DIN EN 13141-8 DIN EN 13141-11 + 3 more
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DAkkS D-ML-20007-01-00 Duisburg, DE
Glykohรคmoglobin A1C (HbA1c) Basophile Granulozyten Eosinophile Granulozyten Erythrozytenverteilungsbreite (RDW) + 3 more
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DAkkS D-ML-18340-01-00 Oberhausen, DE
Blutzellen Basophile Granulozyten Basophile Granulozyten, Eosinophile Gran Eosinophile Granulozyten, Erythrozyten, Basophile Leukozyten, absolut + 3 more
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UKAS 9661 Teston, GB
(HSG 264, 2012)
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DAkkS D-PL-21199-01-01 Kitzingen, DE
DIN EN ISO 1798 DIN EN ISO 1856 Myopathie, Nemaline (TyP1, 3-10: DIN EN ISO 14125 DIN EN ISO 179-1 + 3 more
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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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DAkkS D-PL-17354-01-00 Zwickau, DE
ISO 16750-3 DIN EN 60068-2-53 DIN EN 60068-2-64 ISO 20653 ISO 16750-4 + 3 more
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DAkkS D-K-19502-01-01 Furtwangen, DE
Frequenz - Gleichspannung Spannungsquellen 5 ยตV 1 mV Messgerรคte > 10 mV + 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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DAkkS D-PL-17362-01-01 Freiberg, DE
DIN ISO 48-4 ISO 21527-1 ISO 21527-2 DIN EN ISO 527-3 rs2066844 + 3 more
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UKAS 0174 Stevenage, GB
BS 7177 BS 5852 DIN EN 597-1 BS 6807:1986 DIN EN 597-2 + 3 more
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DAkkS D-PL-14358-01-01 Frankfurt (Oder), DE
DIN EN ISO 5667-1 (A 4) DIN 38402-A 11 DIN 38402-A 12 DIN ISO 5667-5 (A 14) DIN EN ISO 5667-6 (A 15) + 3 more
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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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COFRAC 1-5765 Illkirch-Graffenstaden, FR
NF X 43-269 NF X 43-050 NF X43-050 (parties utiles de
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COFRAC 1-5952 Longjumeau, FR
DIN EN 13001-1 NF X 43-269 NF X43-050 (parties utiles de NF X 43-275 NF X 43-257 + 3 more
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COFRAC 1-6979 Lezennes, FR
NF X 43-050 NF X 43-050 (parties utiles NF X 43-269 - Annexe
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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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