The Noise at Work Regulations 2005 require employers to undertake an assessment of noise exposure if they suspect workers could be exposed to levels above 80 dB(A).
Brian Milligan Associates can design and carry out a suitable Noise Assessment Survey, which typically would take place over a full working shift.
Elements of a Workplace Noise Monitoring Assessment:
- Observation of work tasks by an experienced occupational hygienist
- Measurement of daily noise exposure (LEP,d) by personal dose badges
- Measurement of worker exposure on specific tasks over shorter periods
- Spot noise levels at critical locations and workstations
- Octave band analysis may be needed to ensure correct frequency matching of ear protectors
A Noise Exposure Survey will answer these questions:
- Who is at risk?
- Where should I concentrate my noise reduction efforts for optimum effect?
- What type of hearing protection is suitable?
- What areas should be Hearing Protection Zones?
- What are the most cost-effective ways to reduce noise in the workplace?
- Will enclosures or screens be effective?
As well as addressing the above questions, a noise assessment report will contain a noise exposure chart for each employee monitored, showing:
- Minute to minute Leq levels in dB(A), allowing calculation of Leq for any desired period
- Impulse events indicated with dB(C) levels shown