Controlling Noise at Source

Controlling noise at its source is far more effective for the protection of workers from hazardous levels than just relying on personal protective equipment (PPE) alone.

Noise at work

Workplace noise presents a significant hazard that can have damaging effects on employees’ health and wellbeing. Prolonged, consistent exposure to high noise levels can potentially lead to a variety of health issues, including hearing loss, tinnitus, stress, reduced cognitive function and communication difficulties. Chronic exposure to hazardous noise levels in the workplace can contribute to increased fatigue, decreased productivity and heightened levels of stress among employees.

Additionally, hearing loss is often irreversible and can have long-term implications for an individual’s quality of life. It may also lead to your company receiving a personal injury claim for work induced hearing loss, which will result in significant costs to your business, such as investigation time, increased insurance premiums, etc.

Control of noise

As excessive noise can be so damaging to employees, it has its own set of regulations, the Control of Noise at Work Regulations 2005. This piece of legislation states that you must risk assess and control noise, but to do this suitably and sufficiently there are three elements to consider:

• source, e.g. loud machinery, scaffolding being dismantled, etc.
• pathway, e.g. through the air. Noise can be reflected/deflected
• receiver, e.g. the employees, anyone in the vicinity, environmental (birds, frogs, etc.)

Engineering controls

Engineering controls refer to physical modifications or design changes implemented to eliminate or reduce workplace hazards at their source. These types of control to reduce excessive noise can include:

• Enclosures or barriers. Install soundproof enclosures or barriers around noisy machinery or equipment to contain and reduce noise levels.
• Quieter equipment. Replace noisy machinery with quieter models or retrofit existing equipment with noise-reducing components.
• Vibration isolation. Mount equipment on vibration plates and ensure panels are tightly fastened to reduce noise generated by machinery vibrations.

Other control measures to consider include;

• Consider adjusting operating processes or speeds.
• Train staff with methods of working that reduce noise such as placing scaffolding poles, rather than throwing them.
• Regularly maintain and lubricate machinery to prevent excessive noise caused by wear or friction.

If you cannot control noise levels at source, you must consider other methods such as isolation, by physically separating noisy equipment from work areas using soundproof walls or barriers to minimise direct exposure, or increase distance from the source by positioning noisy machinery as far away as possible from work areas.

Administrative controls such as job rotation, training, and lastly PPE, will reduce the risk of hearing loss, but should be considered only when other avenues have been exhausted.

While PPE plays an essential role in protecting employees from hazardous noise, it can incur ongoing costs in procurement and maintenance. Initial investment in engineering controls or equipment modifications, can provide long-term cost savings by mitigating noise exposure at its origin.

Controlling industrial noise at the source is the most effective way to reduce potentially harmful levels of noise to employees.

If you require any advice or assistance with assessing, controlling or mitigating excessive noise in your  workplace, please feel free to contact us and one of our experienced consultants will be happy to help.