Occupational Hygiene Noise Services
Occupational hygiene noise services combine representative measurement, worker exposure assessment and practical risk-control advice — helping UK organisations manage hearing risk across real workplace conditions rather than relying on isolated decibel readings.
Exposure-led
Worker-focused approach
Integrated
Survey · dosimetry · controls
CNWR 2005
UK regulatory context
Occupational hygiene noise assessment
Worker exposure & practical controls
What it is
What are occupational hygiene noise services?
Occupational hygiene is the discipline of recognising, evaluating and controlling health hazards in the workplace. Applied to noise, it focuses on the noise that workers are actually exposed to during real work — not just a single decibel reading taken next to a machine in isolation.
Occupational hygiene noise services combine workplace surveys, representative monitoring, personal dosimetry where appropriate and interpretation against the Control of Noise at Work Regulations 2005, so that exposure can be characterised in the context of the tasks, shifts and work patterns that produce it.
Competent advice should lead to practical controls — at source where reasonably practicable, supported by organisational measures and appropriate hearing protection for residual risk. This is what distinguishes occupational hygiene noise work from simple decibel testing or generic compliance checklists.
Complete workplace-noise service
A complete workplace-noise service
Occupational hygiene noise services can combine the elements below into one coherent programme. Not every project requires every element — scope is shaped by the workplace, objectives and prior assessment.
- Initial consultation
- Workplace walkthrough
- Risk-assessment review
- Area and task measurements
- Personal noise dosimetry
- Employee exposure assessment
- Peak-noise assessment
- Similar exposure group review
- Hearing-protection assessment
- Hearing-protection-zone review
- Control recommendations
- Technical reporting
- Reassessment after changes
When you need support
When occupational hygiene noise support is needed
- Complex or variable work patterns
- Mobile employees across multiple areas
- Multiple noisy processes operating together
- Several shifts with different conditions
- Uncertainty about actual exposure
- Outdated noise assessments
- Newly installed machinery
- Recent process or layout changes
- HSE feedback or audit concerns
- Reported hearing issues or audiometry shifts
- Existing noise controls performing poorly
- Inconsistent hearing-protection use
- Multi-site noise programmes
- Internal teams needing specialist support
Survey & assessment
Occupational noise survey and assessment
The workplace noise survey is the foundation: representative measurements taken in the context of the tasks and workers being assessed. See our dedicated workplace noise surveys page for the survey methodology in detail.
- Survey objectives agreed in advance
- Representative measurement positions
- Identification of worker groups and tasks
- Combined area, task and personal monitoring
- Daily (LEX,8h) and weekly exposure
- Peak sound pressure (LCpeak)
- Interpretation against action values
- Identification of control priorities
Workplace noise monitoring
Workplace noise monitoring
Representative monitoring matters because workplace noise rarely sits still — production states, tasks and machinery cycles all change through the day. See workplace noise monitoring for the underlying measurement approach.
- Representative monitoring of normal work
- Coverage of varying production conditions
- Capture of changing tasks across the shift
- Measurement across different shifts where needed
- Awareness of machinery cycles and duty
- Coverage of temporary or seasonal work
- Inclusion of maintenance and changeover activity
- Documented quality control around measurements
Employee exposure
Employee exposure assessment
Measured sound levels are turned into employee exposure — daily LEX,8h and weekly LEX,40h where relevant — interpreted against lower and upper action values. See noise exposure assessment for full interpretation.
- LEX,8h daily personal noise exposure
- Duration and level for each task
- Combined task exposure across the shift
- Similar exposure groups (SEGs)
- Daily and weekly exposure where helpful
- Peak sound pressure (LCpeak)
- Interpretation against lower and upper action values
- Why one spot reading is rarely sufficient
Personal dosimetry
Personal noise dosimetry
Dosimetry is most useful where exposure varies. For the full methodology, see personal noise dosimetry.
- When dosimetry adds value over area measurement
- Mobile and multi-task workers
- Full-shift and task-based monitoring
- Activity logs alongside the readings
- Microphone placement on the worker
- Data validation and anomaly review
- Professional interpretation of results
- Recognising when dosimetry is not required
Noise at Work compliance
Noise at Work compliance support
Occupational hygiene findings support employer duties under the Control of Noise at Work Regulations 2005. This service provides competent technical input and does not constitute legal advice.
- Risk-assessment support
- Interpretation of employer duties
- Action-value interpretation
- Noise-control planning
- Hearing-protection selection input
- Hearing-protection-zone review
- Information and training support
- Health-surveillance decision input
- Review after machinery or process changes
Hearing protection
Hearing protection assessment
Hearing protection is reviewed against measured exposure, the work being done and the needs of the wearer. See hearing protection assessment for selection and review in detail.
- Exposure-led selection
- Attenuation review against measured spectra
- SNR and HML methods
- Awareness of under-protection
- Awareness of over-protection
- Compatibility with other PPE
- Fit and individual variability
- Communication needs
- Warning-signal audibility
- Training and maintenance considerations
Factory & industrial
Factory and industrial noise services
Production environments combine multiple sources, shift variation and mobile workers. See factory noise surveys for production-focused detail, or our construction noise monitoring page for site-based occupational noise work.
- Production machinery and tooling
- Multiple noise sources operating concurrently
- Production-line layouts
- Impact noise from presses and forming
- Compressed-air discharge and pneumatic tools
- Maintenance and changeover noise
- Variation across shifts
- Mobile workers between zones
- Workplace noise mapping
- Identification of control priorities
Acoustics & sound propagation
Workplace acoustics and sound propagation
Acoustic conditions can shape how machinery noise spreads and how communication and alarms perform. See workplace acoustic surveys for dedicated acoustic work.
- Reverberation in large workspaces
- Spread of sound across the floor
- Communication conditions
- Alarm and warning-signal audibility
- Reflective surfaces and finishes
- Distribution of machinery noise
- Acoustic-treatment opportunities
- Relationship between acoustics and exposure
Similar exposure groups
Similar exposure groups
Grouping workers by comparable tasks and exposure supports efficient, defensible assessment without monitoring every individual on every shift.
- Grouping workers with comparable tasks and exposure
- Selecting representative individuals
- Awareness of variation within groups
- Coverage across different shifts
- Treatment of mobile roles
- When additional monitoring is justified
- Defensible documentation of grouping decisions
Measurement strategy
Measurement strategy
A competent measurement strategy is shaped by the work, not by convenience. The points below typically inform the approach.
- Defined survey objectives
- Understanding of work patterns
- Awareness of machinery cycles
- Coverage of relevant employee roles
- Appropriate measurement duration
- Representative operating conditions
- Choice between area and personal monitoring
- Inclusion of peak noise where relevant
- Recognition of measurement uncertainty
- Treatment of abnormal events
- Data-quality checks
- Consideration of future change
Equipment & quality control
Equipment and quality control
Integrating sound-level meters
Calibrated Class 1 or Class 2 integrating sound-level meters used for area and task measurements.
Personal noise dosimeters
Body-worn dosimeters for full-shift or task-based exposure characterisation.
Acoustic calibrators
Pre- and post-measurement calibration of instruments to recognised reference levels.
Microphone positioning
Suitable mounting and placement for the worker, task or area being measured.
Activity records
Documented activity, machinery duty and timing during measurements.
Observation notes
Written observations of operating conditions, controls in use and worker behaviour.
Data validation
Review for unrealistic peaks, dropouts, contact noise and other measurement artefacts.
Representative sampling
Sampling that reflects the work patterns and similar exposure groups identified.
Noise-control recommendations
Noise-control recommendations
Hearing protection should not be the default control. The noise-control hierarchy starts with elimination and ends with hearing protection for residual risk.
Elimination
Removing the noisy process where reasonably practicable.
Substitution
Replacing equipment, tools or methods with quieter alternatives.
Quieter equipment
Specifying low-noise machinery at procurement and replacement.
Engineering controls
Damping, silencers, vibration isolation and low-noise tooling.
Isolation
Separating workers from noise sources through distance or remote operation.
Enclosure
Acoustic enclosures, screens and refuges around dominant sources.
Damping
Reducing structural and panel vibration that radiates noise.
Silencers
Exhaust, intake and pneumatic-discharge silencers where appropriate.
Maintenance
Addressing wear, imbalance, loose panels and worn bearings.
Layout changes
Reorganising work areas to reduce exposure of fixed workstations.
Organisational controls
Scheduling, rotation and access controls to limit exposure.
Reduced duration
Limiting the time individual workers spend in noisy positions.
Hearing protection
Used for residual risk, not as a substitute for source control.
Hearing conservation
Hearing conservation support
Occupational hygiene findings can underpin a broader hearing-conservation approach. Medical diagnosis sits with competent occupational health providers, not with this service.
- Exposure assessment as the foundation
- Practical noise-control measures
- Appropriate hearing protection
- Worker information and training
- Hearing-protection zones
- Maintenance of equipment and controls
- Worker consultation
- Health surveillance through competent occupational health
- Periodic review of effectiveness
- Defensible management records
Multi-site & programme
Multi-site and programme support
For organisations with multiple facilities, a coordinated approach can keep assessment consistent and findings comparable across the group.
- Surveys across several facilities
- Repeated assessment cycles
- Standardised reporting formats
- Prioritised site assessment plans
- Consistent measurement approach across the group
- Central tracking of agreed actions
- Reassessment after significant change
- Common hearing-protection standards
- Management summaries for senior teams
Internal teams & consultants
Working with internal teams and consultants
Specialist noise input can sit alongside your existing teams and advisers, without replacing the organisation's wider responsibilities.
- In-house health and safety teams
- Occupational health teams
- Facilities teams
- Engineering and maintenance teams
- External health and safety consultants
- Principal contractors
- Multi-disciplinary project teams
Industries supported
Industries and workplaces supported
Occupational hygiene noise services for a wide range of UK industrial and commercial workplaces, including:
Manufacturing
Engineering
Fabrication
Construction
Warehousing
Logistics
Recycling
Utilities
Maintenance
Production facilities
Plant rooms
Woodworking
Commercial workplaces
Multi-site industrial operations
What the client receives
What the client receives
- Agreed scope of work
- Workplace observations
- Documented measurement strategy
- Area and task measurement results
- Dosimetry findings where used
- Employee exposure interpretation
- Peak-noise findings
- Similar exposure group assessment
- Comparison against action values
- Hearing-protection observations
- Control recommendations
- Prioritised action plan
- Clear technical report
- Management summary where appropriate
- Recommendations for review or further assessment
Occupational hygiene noise services provide competent measurement-led advice. They do not constitute legal certification or a guarantee of regulatory compliance — those remain the employer's responsibility.
Common weaknesses
Common weaknesses in workplace noise management
- Relying only on spot readings
- No representative exposure assessment
- Outdated noise surveys
- Monitoring only during quiet periods
- Failing to consider maintenance activity
- Ignoring peak noise
- No activity records alongside measurements
- Issuing hearing protection without control review
- Inconsistent or undefined hearing-protection zones
- No training on noise risks or controls
- No review after machinery or process changes
- Disconnected records held in different places
- No clear ownership of agreed actions
- Assuming one result represents every worker
Why us
Why choose Workplace Noise Surveys
Occupational hygiene-led
An approach rooted in occupational hygiene rather than acoustics product sales or generic safety consultancy.
Worker-exposure focus
Measurements and interpretation framed around the employees actually exposed to noise.
Representative measurement strategies
Survey design that reflects real work patterns, not convenient quiet windows.
Practical industrial understanding
Findings interpreted with production, maintenance and operational reality in mind.
Integrated service capability
Survey, dosimetry, exposure interpretation, hearing protection and control advice combined where useful.
Clear reporting
Reports written for managers, engineers and SHEQ teams — not for specialists alone.
Control-focused advice
Recommendations grounded in the noise-control hierarchy, with hearing protection as residual control.
UK regulatory context
Recommendations developed with the Control of Noise at Work Regulations 2005 in mind.
Green Air Monitoring network
Supported by the wider Green Air Monitoring occupational hygiene network.
See our broader workplace noise surveys, supporting workplace noise monitoring, noise exposure assessment, personal noise dosimetry, hearing protection assessment, factory noise surveys, workplace acoustic surveys and UK regulatory context on noise at work regulations. Learn more about us or get in touch.
FAQ
Occupational hygiene noise services FAQs
What are occupational hygiene noise services?+
Occupational hygiene noise services combine representative workplace measurement, employee exposure assessment and practical risk-control advice to manage the risk of noise-induced hearing damage. Rather than a single decibel reading, the approach considers tasks, durations, machinery, work patterns and similar exposure groups so the findings reflect the noise workers actually experience.
How are occupational hygiene noise services different from a basic noise test?+
A basic noise test typically reports a sound level at a moment in time. Occupational hygiene noise services consider how that level relates to a worker over the course of a shift, week or job — including peak noise, variable tasks, machinery cycles, similar exposure groups and existing controls — and translate the findings into prioritised, practical recommendations.
Does every assessment require personal dosimetry?+
No. Personal noise dosimetry is one tool among several. It is most useful where workers are mobile, where tasks and exposure vary, or where area measurements cannot reasonably represent a shift. Where exposure can be characterised through task-based and area measurements, full-shift dosimetry may not be necessary.
Can several shifts or sites be assessed?+
Yes. Where noise exposure differs between shifts, departments or facilities, the measurement strategy can include additional visits, dosimetry across multiple shifts and coordinated assessment across sites. Multi-site programmes can adopt a consistent methodology and reporting format so findings are comparable across the organisation.
What is a similar exposure group?+
A similar exposure group, or SEG, is a group of workers whose tasks, locations and time spent in noisy areas are similar enough that their noise exposure can be characterised together. Grouping workers in this way supports efficient and defensible exposure assessment, with representative monitoring rather than measuring every single worker.
Will the service assess hearing protection?+
Yes, where it is in scope. Hearing-protection observations may consider attenuation against measured exposure spectra, suitability for the work, compatibility with other PPE, comfort, communication needs, fit and the risk of both under- and over-protection. Detailed work on selection and review is covered on the hearing protection assessment page.
Can the assessment support Noise at Work compliance?+
The findings support employer duties under the Control of Noise at Work Regulations 2005 — including risk assessment, identifying workers exposed at or above action values, hearing-protection-zone decisions and prioritising controls. The service provides competent technical input; legal compliance remains the employer's responsibility.
Can occupational hygiene noise services identify control priorities?+
Yes. A key purpose is to identify which noise sources and tasks contribute most to worker exposure, so that engineering, organisational and procedural controls can be prioritised through the noise-control hierarchy rather than relying on hearing protection alone.
What equipment is used?+
Measurements are taken with calibrated integrating sound-level meters, personal noise dosimeters and acoustic calibrators, with documented pre- and post-measurement checks. Activity logs and observation notes accompany the readings so that results can be interpreted against the work that produced them.
Can existing noise reports be reviewed?+
Yes. Existing reports, risk assessments and exposure data can be reviewed to identify gaps, areas needing reassessment and opportunities to improve the measurement strategy. This is often useful where work patterns have changed, machinery has been added or HSE feedback has been received.
How often should workplace noise exposure be reassessed?+
HSE guidance suggests reviewing assessments at least every two years, and sooner where there is a material change — new machinery, revised processes, layout changes, increased production, new evidence such as audiometry findings or worker complaints, or failure of existing noise controls.
Can the service support an internal health and safety team?+
Yes. The service can sit alongside internal health and safety, occupational health, facilities and engineering teams, providing specialist noise input without replacing the organisation's broader responsibilities. Findings can be aligned with internal management systems, training and review cycles.
Discuss Occupational Hygiene Noise Support
Speak to a UK occupational hygiene noise specialist about a workplace assessment, multi-site programme or specialist support for your in-house team. We respond to most enquiries the same working day.