List three engineering controls that might be used to reduce the ...

[JMatthes]

List three engineering controls that might be used to reduce the risk of hearing loss on a job site.
 
  What will be an ideal response?

Question 2

Name four factors that affect the level of risk associated with noise hazards.
 
  What will be an ideal response?

[pratush dev]

Answer to Question 1

Typical engineering controls involve:
 Reducing noise at the source (e.g., installing a muffler)
 Interrupting the noise path (e.g., erecting acoustical enclosures and barriers)
 Reducing reverberation (e.g., installing sound-absorbing material)
 Reducing structure-borne vibration (e.g., installing vibration mounts and providing proper lubrication)

Answer to Question 2

A number of different factors affect the risk of hearing loss associated with exposure to excessive noise. The most important of these are:
 Intensity of the noise (sound pressure level)
 Type of noise (wide band, narrow band, or impulse)
 Duration of daily exposure
 Total duration of exposure (number of years)
 Age of the individual
 Coexisting hearing disease
 Nature of environment in which exposure occurs
 Distance of the individual from the source of the noise
 Position of the ears relative to the sound waves

[JMatthes]

Thanks

[pratush dev]

Welcome