Scope
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
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DIN EN ISO 4871
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BS EN ISO 4871
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NF EN ISO 4871
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UNI EN ISO 4871
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UNE EN ISO 4871
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NEN EN ISO 4871
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DIN EN ISO 11201
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BS EN ISO 11201
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NF EN ISO 11201
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UNI EN ISO 11201
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UNE EN ISO 11201
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NEN EN ISO 11201
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ASTM D 2863
c.1772A>G rs11568367
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UNE-EN ISO 16283-2
UNE-EN ISO 16283-3
UNE-EN ISO 140-7
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UNE-EN ISO 140-4
(HSG 264, 2012)
HSG 227 (2004)
(HSG 248) – 2021
(PCM) based on HSG 248
DIN EN 12102-1
DIN EN 14511-3
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UNE-EN ISO 10140-2 0
ISO 2631-2
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UNE-EN ISO 10140-1
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NF X 43-269
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NF X43-050 (parties utiles de la norme)
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ADOUR BIO CONSEIL - A.BIO.C.
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DIN ISO 11665-4
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SM 3500
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EPA 8270
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Railway brake — anti-slide device (UIC 5
Railway brake — magnetic track brakes (U
Railway brakes — conditions for homologa
Messgeräte im Kraftfahrwesen
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