Noise, dust and vibrations are identified
Noise levels are measured using a sound level meter. The commonly used unit of measurement is decibel (dB). The scale commonly used for noise measurement in a workplace is the A scale (dB(A)). This is a weighted decibel level and is used to simulate the way our hearing perceives sounds.
Noise in a demolition environment often reaches a level that could damage hearing [above 85 dB(A)]. However, the level of background noise can make it hard to concentrate or make normal conversation difficult. It can also contribute to stress and may result in physical and mental fatigue. Levels of over 55 dB(A) in offices can be distracting and/or annoying.
Many buildings are located in areas of heavy and constant traffic. Others may be located in a major complex or factory site. The location of a site and how well it is protected can affect the levels of noise workers and neighbours may experience.
Common demolition equipment may be a source of noise that can affect the ability to complete tasks in an effective, healthy and safe manner. Examples of noise-generating equipment include:
• Plant & equipment
• The demolition tasks
• Workers
An important issue to consider when assessing noise levels is that some of the noises hardest to tolerate do not have to be the loudest. Just consider the frustration caused by the dripping of a tap!
Noises from unexpected and high-pitched sources are more likely to be distracting. When working on a task that requires a high degree of concentration, even background noise from conversations can prove highly irritating.
It is possible to minimise noise by:
• Using layout to locate noise generating activities away from activities requiring concentration
• Isolation of noisy equipment
• Selecting equipment with consideration to noise levels generated. The most suitable version that complies with Australian Standards should be selected
To view a typical Hazard analysis click the link below:
Hazard – Demolition
Hazard – Recurring Hazards
View the video given below: