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
1,868
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Devonport Royal Dockyard
Active
BS 4206:1967 (superseded)
ISO 5173
ISO 7438
BS EN ISO 9606-2:2004
BS 131-5:1965
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Diatec Diagnostics
Active
AUDIOMETRIC EQUIPMENT
Attenuator linearity
Microphones
EAR SIMULATORS
Class LS, 1 and 2
Druck
Active
Gas pressure (absolute)
Hydraulic pressure (gauge)
Gas pressure (gauge)
(At low current)
Specific values (continued)
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DynaGreen Environmental UK
Active
DIN EN 14791
IEC 60519-11
BS EN ISO 16911-1:2013 using
DIN EN 14792
DIN EN 13126-19
+ 3 more
BS EN ISO 16283-1:2014+A1:2017BS EN ISO
BS EN ISO 16283-2:2020
BS EN ISO 140-4:1998
ISO 1407
BS EN ISO 9972:2015
+ 1 more
and Appx. 3 of HSG 227 (2004))
in Appendix 5 of HSG 227 (2004)
guides HSG 264 (2012) and
(HSG 264, 2012)
ERC Testing
Active
DIN EN 1863-1
BS EN ISO 10077-1:2006
published 2024) for BS EN
DIN EN 1863-2
BS EN ISO 10077-2:2017
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Efectis UK/Ireland
Active
EN 1364-3
DIN EN 1366-4
EN 1364-4
BS 476-21
BS 476-22
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DIN EN 14791
IEC 60519-11
BS ISO 11338-1:2003
DIN EN 13284-1
DIN EN 14385
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(HSG 248) – 2021
(PCM) based on HSG 248
based on BS EN 12457
DIN EN 1948-4
dbSNP rs1800562, rs1799945, rs1800730, r
(HSG 264, 2012)
HSG 227 (2004))
(HSG 248) – 2021
(PCM) based on HSG 248
ISO 3651-2
ASTM A262 Methods A, C & E
ISO 7438
ASTM G28-2022 Method A
ASTM G48 Method A
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DIN EN 1303
DIN EN 12209
DIN EN 14846
BS 3621:2007+A2:2012
BS 8621:2007+A2:2012
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Enertek International
Active
DIN EN 12279
DIN EN 12278
-22018G/A, rs182549
DIN EN 303-2
DIN EN 15502-2-1
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Enquin Environmental
Active
(HSG 248) – 2021
(Section 2) based on HSG 248
(Section 4) based on HSG 248
staining based on HSG 248
(HSG 264, 2012)
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Enviraz Surveys
Active
HSG 264 (2012) and Appx. 3 of
(HSG 264, 2012)
HSG 227 (2004))
Appendix 5 of HSG 227 (2004))
Envirocare Midlands
Active
(HSG 248) – 2021
SOP/11, based on HSG 248
(PCM) based on HSG 248
(HSG 248) – 2021
DIN EN 12457-2
3.02 based on HSG 248
staining based on HSG 248.
(PCM) based on HSG 248
Environmental Compliance
Active
requirements of BS EN 15259:2007
DIN EN 14181
DIN EN 13126-19
DIN EN 15058
DIN EN 14789
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