Workplace Noise Monitoring
The Control of Noise at Work Regulations 2005 requires employers to assess the risks to their workers from noise at work. Moreover, they must act to reduce the noise that produces those risks. The first step of this is to carry out workplace noise monitoring.
The LEP,d is a measure of a worker’s daily exposure to workplace noise. We calculate this by measuring the sound pressure levels a worker has over a short period and work out what that exposure would be for 8 hours. Where a worker’s exposure consists of a series of different noise levels, we calculate the combined exposure. This calculation is a time-weighted average, using the duration and level of each noise.
In summary, this LEP,d is the figure used by the noise regulations. This figure is essential to work out what a worker’s exposure is and the actions they require.
LEP,d Action Values and Exposure Limits
The control of noise at work regulations set the actions required when daily or weekly workplace noise exposures exceed specific levels. These values are:
- Firstly, the Lower Exposure Action Value – a daily or weekly exposure to workplace noise (an LEP,d) of 80 dB
- After that, the Upper Exposure Action Values – daily or weekly exposure to workplace noise (an LEP,d) of 85 dB
- Finally, the Exposure Limit Value – a daily or weekly exposure of 87 dB which workers must not exceed
LC,peak Action Values and Exposure Limits
In addition to the daily and weekly exposure action values and exposure limit, there are peak levels that workers must not exceed. We express these measurements using C-weighting LCpeak in dB(C). The LCpeak assesses workplace noise that is present as loud impulse noises or bangs.
The Control of Noise at Work Regulations specify the actions that employers need to take when peak noise levels exceed the limits. These limits are:
- Lower Exposure Action Value – for peak sound pressure is an LCpeak 135 dB
- Upper Exposure Action Value – for peak sound pressure is an LCpeak of 137 dB
- Exposure Limit Value – is a peak sound pressure is an LCpeak of 140 dB
We can undertake all of your Workplace Noise Monitoring requirements. These range from measurements of sound pressure levels during single activities to personal noise dose measurements for whole days or weeks for individual workers. We also advise you on the actions necessary to comply with the Control of Noise at Work Regulations 2005. As well as this, we can tell you what hearing protection is most suitable for each task.
Further Information is available below