Noise Measurement and Control Flashcards
BE is responsible for which part of ACMED
(noise) Assessment
(noise) Control
BE HCP Responsibilities
quantify noise hazards
recommend noise control
assess sound booth
average sound level or exposure for an 8-hr workday and 40-hr workweek
time-weighted average
time-weighted average exposure at which employers must implement a HCP
criterion level (action level)
A-weighted sound level at which exposure for a stated time (typically 8-hrs) accumulates 100% noise dose
permissible exposure limits
weighted scale for continuous noise, shaped for damage risk criteria to humane ear
dBA
weighted scale for continuous noise, used for environments with significant low frequency energy
dBC
weighted scale used to measure impulse sounds
dBP
AREC Model
anticipate
recognize
evaluate
controls
goal of noise assessment
quantify the worker’s noise exposure and determine health risks
noise measurement instruments
sound level meters
noise dosimeters
conducts area noise source surveys
perform annual booth certification
sound level meters
capture individual exposures over a work shift
noise dosimeter
determines which control solutions are most feasible and effective
hierarchy of controls
hierarchy of controls
(top to bottom)
elimination
substitution
engineering controls
administrative controls
PPE
physically remove the hazard
elimination
replace the hazard
substitution
isolate people from hazard
engineering controls
change the way people work
administrative controls
protects the worker (last resort)
PPE
amount of noise at the ear that comes through hearing protection device
effective noise exposure
goal of effective noise exposure
be below 85dB
range of 76-84dB
if preferred methods for selecting attenuation are not available use…
Least Preferred method
adjustment of the NRr to estimate actual field attenuation
derating
