QUIZ 1 INSTRUMENTATION FOR OSH

Under OSH (Noise Exposure) Regulations 2019, the daily noise exposure level must NOT exceed:

• 82 dB(A)

• 85 dB(A)

• 90 dB(A)

• 115 dB(A)

Which divide device is used to measure and device the sound or noise into individual frequency bands?

• Noise Dosimeter

• Sound Level Meter

• Octave Band Analyzer

• Audiometer

Noise Dosimeter is preferred for measuring a worker’s noise exposure because of the following reason, EXCEPT:

• When they contain impulsive components

• When the noise levels are varying or intermittent

• When noise levels are at very low sound levels.

• When the worker moves around frequently during the work shift

______ is an important aid to visualize the work locations and noise exposure levels on a general layout plan of the workplace.

• Noise hazard

• Noise mapping

• Noise pictogram

• Noise warning sign

Noise mapping is used mainly to:

• Diagnose hearing loss

• Calibrate noise meters

• Measure impulsive noise

• Visualize noise levels on a layout plan

During noise measurement, the noise dosimeter should be placed at:

• aear

• head

• shoulder

• upper arm

The audiometric testing should be conducted twice a year for noise exposure more than 85 dB(A).

• True

• False

The figure show about the steps to turning off dosimeter.

• True

• False

The formula to count Noise Reduction Rate is NRR = TWA – Estimated Exposure - 7

• True

• False

A red blinking LED indicates the noise dosimeter is charging.

• True

• False