According to the Health and Safety Executive (HSE) more than 1million employees in the UK are exposed to levels of noise that is putting their hearing at risk. With the increasing claims culture in the UK, it is essential than organisations comply with the control of noise regulations.
Here are five steps that businesses can take to ASSESS and CONTROL excessive noise levels:
1. Establish if there are any noise generating processes in the workplace by conducting a preliminary assessment of all working practices.
2. Once the areas that pose a potential risk have been identified, it’s very important to recognise which employees could be at risk and evaluate how the harm may occur.
3. Once usual work routines have been determined, individual noise measurements can be carried out to assess the typical exposures and look at those potentially at risk. There are two ways to conduct these:
a. The first method is to use an integrated sound level metre to determine representative A-weighted average noise level readings – taken from each task undertaken by employees.
b. The second type of monitoring involves using a dose metre which can be worn by an employee for an entire shift, no matter if the employee is constantly on the go, or needed to fit in tight spaces – location and work patterns are not issues.
4. A report should be compiled providing evidence of the decisions made to comply with the law. It should include:
5. The noise control programme in the workplace should be reviewed regularly to consider new equipment, employee working patterns and any changes to the building layout(s).
Guidance On Selecting Hearing Protection
To choose the best type of hearing protection for your business, noise risk assessment results along with information from the PPE supplier need to be carefully followed. The main types of hearing protection are as follows:
Ear plugs
Ear plugs are inserted into the ear canals to protect them from exposure to high levels of noise. There are many types of ear plugs. Usually, they’re made from soft plastic, polyurethane, silicone or PVC. When fitted correctly, they’re comfortable and are an effective way of providing good sound attenuation.
Ear Muffs
Ear Muffs normally provide less protection than ear plugs, because they only sit over ears, rather than directly in the ear canal. They are very easy to fit, but they can become uncomfortable in hot environments.
Canal caps/semi-insert ear plugs
Both canal caps and semi-insert earplugs are convenient for jobs where the worker must frequently take their hearing protection on and off. Canal caps have rounded heads that cover the entrance to the ear canal. On the other hand, semi-insert ear plugs usually have conical tips that can be pushed into the ear canal.
Whichever type of hearing protection you choose, the most important factor is the level of noise reduction they provide when compared against the measured daily average exposure. Hearing protection will have a ‘dB’, or decibel rating – this indicates how much the noise is reduced. The overall aim should be to reduce noise levels at the ear to between 70 – 75 dB.
If ears are over-protected it can create additional safety issues, such as difficulties with communication and the inability to hear warning signals. Workers may become isolated from their environment, causing them to remove their hearing protection - which could lead to hearing damage.
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