Managing workrelated noise exposure is essential for Australian workers across mining, construction, manufacturing, and transport. Proactive noise control protects hearing, supports compliance, and reduces long term business risk.
This article outlines practical steps, legal expectations, and tools to help organisations and workers implement effective noise management plans.
| Industry | Typical Noise Sources | Legal Standard (dB(A)) | Control Priority |
|---|---|---|---|
| Mining | Drills, haul trucks, crushers | 85 dB(A) time weighted average, 140 dB(C) peak | Elimination, isolation, hearing protection |
| Construction | Excavators, jackhammers, pile drivers | 85 dB(A) time weighted average, 140 dB(C) peak | Substitution, scheduling, acoustic barriers |
| Manufacturing | Machinery, compressors, packaging lines | 85 dB(A) time weighted average, 137 dB(C) peak | Maintenance, enclosures, rotation of workers |
| Transport & Logistics | Forklifts, trains, loading bays, sirens | 85 dB(A) time weighted average, 137 dB(C) peak | Route planning, quieter equipment, hearing protection zones |
Assessing Noise Hazards at the Workplace
Effective management begins with a clear assessment of noise hazards across sites and roles. Understanding where, when, and how workers encounter harmful sound levels allows targeted action.
Noise assessments combine measurements, worker observations, and records to build a reliable picture of exposure profiles.
Conducting Noise Surveys
Workplace noise surveys use personal dosimeters and fixed sound level meters to capture time weighted averages and peak pressures. These surveys map high risk areas such as drilling zones, plant compounds, and production lines.
Identifying High Risk Tasks and Areas
Tasks involving continuous loud machinery, impulse noise from impacts, or extended shifts in reverberant spaces demand priority attention. Area zoning, signage, and scheduled rotations help manage risk.
Implementing Engineering and Administrative Controls
Engineering controls address noise at the source or path, while administrative controls manage how people and tasks are organised. Combining both delivers the most reliable protection.
Equipment Selection and Maintenance
Choosing quieter machinery, installing silencers, and maintaining bearings and drives reduces noise generation. Planned maintenance prevents performance decline that can increase sound output.
Scheduling, Zoning, and Shift Planning
Rotating staff, limiting time in high noise zones, and setting acoustic boundaries lower cumulative exposure. Administrative plans should align with noise survey findings and exposure records.
Hearing Protection and Individual Management
Where risks remain after controls, hearing protection and individual monitoring become critical components of workrelated noise management.
Selecting and Fitting Hearing Protection
Use SNR or NRR rated ear muffs or correctly fitted ear plugs suited to the noise spectrum. Regular fit testing, training, and checks ensure protection matches the intended level.
Audiometric Testing and Health Surveillance
Baseline and regular audiometric tests help detect early changes in hearing. Records support early intervention and inform review of control measures.
Strengthening Safety Culture and Continuous Improvement
Effective workrelated noise management relies on shared responsibility, clear communication, and measurable improvement over time.
- Use noise surveys to prioritise high risk areas and tasks
- Apply engineering controls before relying on personal protection
- Implement administrative controls such as rotation and scheduling
- Provide and fit appropriate hearing protection with regular training
- Run audiometric programs and review records regularly
- Consult workers and representatives during planning and reviews
- Document compliance, incidents, and improvements for accountability
FAQ
Reader questions
How long can I work in a 90 dB(A) environment without hearing protection in Australia?
Under the model Work Health and Safety laws, the eight hour time weighted average exposure standard is 85 dB(A). At 90 dB(A), permissible exposure time is reduced, and hearing protection should be used immediately.
What should I do if my hearing protection feels uncomfortable on site?
Speak with your supervisor or safety officer for alternative options such as different ear plug styles, adjustable headbands, or well fitted electronic muffs that reduce noise while allowing communication.
Can noisy neighbours or community music be considered workrelated noise?
If your site is near industrial boundary noise, document levels with site measurements and engage your employer and local council. Workrelated noise policies apply when activities are part of business operations and affect workers on site.
How often should noise exposure records and equipment be reviewed?
Exposure records and noise control performance should be reviewed at least annually, or sooner after incidents, process changes, or maintenance that affects sound levels.