Confusion over noise measurement directive

Employers may have to use noise meters if they are to fully comply with the EU Directive on occupational noise, which comes into force in February 2006.
Where the weekly average noise level is more than 80dB(A) employers must provide hearing protection, if over 85dB(A) then hearing protection must be worn and noise levels must not exceed 87dB(A) for the week.
External noise emissions on plant as depicted by a sticker are often more than 100dB(A) and the internal sound measurement, usually below 80dB(A), is taken with the doors and windows closed. However, banksmen and excavator operators working with the cab door open are subjected to increased noise levels - although not the full 100dB(A) as recorded at the tailpipe as sound energy decreases with distance.
The Health & Safety Executive (HSE) was unable to say how an employer should assess the noise exposure in these cases, but a spokesman said: "If you have to shout to communicate with somebody 2m away, then it is an indication the noise levels are too high."
He said if employers are concerned, they can contact the HSE and it will take on-site measurements. The situation regarding sites with multiple machines or when using a dipper-mounted hammer is equally unclear.
The HSE plans to publish a series of leaflets and undertake a number of road shows to explain the legislation ahead of implementation.