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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DAkkS D-ML-13295-04-00 München, DE
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Lamotrigin AFP HbA1c CA 125 AMH + 3 more
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Kleines Blutbild Differentialblutbild maschinell C-reaktives Protein (CRP) Differentialblutbild manuell Urinstatus + 3 more
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17-OH-Progesteron ACTH Androstendion Aldosteron Anti-TG Antikörper + 3 more
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Liste aller Untersuchungsverfahren Webpräsenz des Medizinischen Laboratoriu CDT Ampicilin Cefepim + 3 more
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Rhythmusstörungen (ABCC9, AKAP9, ANK2,TT MSH2, MSH6, MUTYH, PMS2, PTEN, RAD51C, R Familiärer Brust- und Eierstockkrebs MSH2, MSH6, EPCAM ); SNV, CNV Birt-Hogg-Dubé-Syndrom (FLCN + 3 more
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DAkkS D-ML-13400-01-00 Groß Grönau, DE
AMA M2-3E IgG Anti-CCP (Cyclische Citrullin Antikörper) IgG Anti-dsDNS-NCX IgG Anti- Transglutaminase + 3 more
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DAkkS D-K-17518-01-01 Remscheid, DE
abweichungen Metrosoft CM und Messvolumen Metrosoft QUARTIS, mit einer Software der Fa. WENZEL Raumdiagonale Metromec Chur, CH von ≤ 4666 mm
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DAkkS D-K-15098-01-01 Leonberg, DE
Software von WENZEL einer Raumdiagonalen Messprojektoren einer Raumdiagonalen Koordinatenmessgeräte geräte mit einem Messmikroskope ≤ 600 mm Auswertesoftware Messvolumen mit + 2 more
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DAkkS D-K-15077-01-00 Aschaffenburg, DE
Parallelendmaße 0,5 mm bis DIN EN ISO 3650:1999 Parallelendmaße aus 0,5 mm bis Keramik oder Wolframkarbid nach + 3 more
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DAkkS D-K-22877-01-01 Eschweiler, DE
(ein- und mehrgängige zylindrische Außen- und geradlinigen Flanken und symmetrischem Profil sowie positiven Flankenwinkeln) + 3 more
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UKAS 23015 Mansfield, GB
and Appendix 3 of HSG 227 (2004)) Appendix 5 of HSG 227 (2004))
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DAkkS D-PL-22819-01-00 Lüdenscheid, DE
DIN 40050-9 IEC 60068-2-2 IEC 60068-2-6 DIN EN IEC 60068-2-13 DIN EN 60068-2-14 + 3 more
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UKAS 7736 Chelmsford, GB
(HSG 248) – 2021 (PCM) based on HSG 248 SAS 02 based on HSG 248
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UKAS 9942 Royal William Yard, GB
Appendix 5 of HSG 227 (2004)) HSG 227 (2004) HSG 264 (2012) and Appendix 3 of
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DAkkS D-ML-13173-01-00 Bad Oeynhausen, DE
Thrombozytenfunktion Amiodaron/Desethylamiodaron Cotinin Cyclosporin A Everolimus + 3 more
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DAkkS D-ML-21357-01-00 Heppenheim, DE
Albumin Alkohol ALP Anti-Faktor Xa (Fragmin) AT3 + 3 more
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DAkkS D-PL-19181-01-00 Winnenden, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN 13487 DIN 45635-46 + 2 more
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DAkkS D-K-15009-01-01 Leipzig, DE
Eindringkörper für 75° Sound system equipment — speech transmis Länge der Schnittlinien * Vergrößerungsnormale Abflachung bis 300 + 3 more
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DAkkS D-K-15082-01-00 Hamburg, DE
Durchfluss von Gasen 17 mL/s transferstandards Strömungswiderstand 5 mL/min 15,0 mL/min Laminar Flow Elemente 17 mL/min + 3 more
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DAkkS D-PL-22893-01-00 Rheine, DE
DIN 4150-1 DIN 4150-2 DIN 4150-3 DIN EN 61400-11 ISO 9613-2
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DAkkS D-K-17059-02-01 Dresden, DE
Messschieber für Außen-, 0 mm Innen- und Tiefenmaße > 300 mm Tiefenmessschieber 0 mm Höhenmessschieber 0 mm + 3 more
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UKAS 0671 Basildon, GB
(HSG 248) – 2021 (PCM) based on HSG 248 MAAM 05 based on HSG 248 (HSG 264, 2012)
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ENAC LE1438 Vall d Uixó, ES
UNE-EN ISO 140-5 UNE-EN ISO 16283-3 UNE-EN ISO 16283-2 UNE-EN ISO 140-7 UNE-EN ISO 16283-1 + 1 more
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ENAC LE285 Alacant, ES
UNE-EN ISO 27888 SM 2540 UNE-EN ISO 8467 UNE-EN ISO 7027-1 UNE-EN ISO 10523 + 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 — 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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