Workplace Noise Monitoring

The Control of Noise Regulations 2005 requires employers to assess the risks to their employees from noise at work and to act to reduce the noise exposure that produces those risks.

The LEP,d is a measure of a worker’s daily exposure to workplace noise and is calculated from the LAeq dB value by normalising it to an 8-hour period.  Where a worker’s exposure consists of a series of different noise levels, the LEP,d can be calculated by time weighted, using the duration of each Noise level, and calculate the combined exposure.

This LEP,d is the parameter used by the noise regulations and is essential in assessing a worker’s exposure and what action should be taken.

Workplace Noise Action Values and Exposure Limits

Sound pressure level meter for workplace noise assessments

The noise regulations specify actions to be taken when daily or weekly workplace noise exposures exceed specific levels. These specific Values are:

Lower Exposure Action Value – a daily or weekly exposure to workplace noise (an LEP,d) of 80 dB

Upper Exposure Action Values – a daily or weekly exposure to workplace noise (an LEP,d) of 85 dB

Exposure Limit Value which must not be exceeded, this is a daily or weekly exposure of 87 dB

In addition to the daily and weekly exposure action values and exposure limit, there are peak levels that must be assessed too. These are measured as C-weighted peak measurements, which are expressed as LCpeak in dB(C). The LCpeak is used for workplace noise measurements where loud impulse noises or bangs are present.

The noise regulations specify actions that need to be taken when peak noise levels are exceeded. These values are:

Lower Exposure Action Value for peak sound pressure is an LCpeak 135 dB

Upper Exposure Action Values for peak sound pressure is an LCpeak of 137 dB

Exposure Limit Value is a peak sound pressure is an LCpeak of 140 dB

Synergy can undertake all of your Workplace Noise Monitoring requirements from measurements of sound pressure levels during single activities to personal noise dose measurements for individual staff measurements. We will also advise you on the actions that need to be taken in order to comply with the Control of Noise at Work Regulations 2005 and the hearing protection that is most suitable for each task undertaken.


Further reading.

The Control of Noise at Work Regulations 2005

Exposure calculators and ready reckoners.

HSE List of Frequently asked questions.

 


Call us today on: 01782 614236 or email us at: info@synergy-environmental.co.uk