VARIANT 11. VARIANT 12

VARIANT 11

Task 1

There is the noise at factory . General noise level – 90 dB. Power of this noise change more than 20 dB. It consist of 4 octave of sounds which level more than another ones on 10 дБ. The noise includes the sounds with frequency of oscillation 700 Hz. Give the hygienic estimation about this noise.

Task 2

Mr Gross works at factory durind 11 years. On his workplace there is non constant, high-frequency noise. General noise levels – 90 dB. do not hear normally. (progressing fall of hearing if the peaple continued working at noise’s factory ) He does not hear normally. (progressing fall of hearing if the peaple continued working at noise’s factory )

Make the diagnosis. What preventive measures is it necessary in this case?

Question 1. Concept of "Noise". Classification of Noise

Question 2. Concept of " Vibration". Classification of vibration.

Question 3. Effect of actions of EMF on Organism. The main principles of protection from electromagnetic radiation

VARIANT 12

Task 1

There is the noise at factory . General noise level – 80 dB. power of this sounds change more than 5 dB. It consist of all octave of sounds ( frequencies). The noise includes the sounds with frequency of oscillation 800 Hz. Give the hygienic estimation about this noise.

Task 2

Mr D. works at factory durind 7 years. On his workplace there is non constant, high-frequency noise. General noise levels – 90 dB. He does not hear normally. (progressing fall of hearing if the peaple continued working at noise’s factory )

Make the diagnosis. What preventive measures is it necessary in this case?

Question 1. Kinds of sounds. Maximal Permissible Levels of Noise for Various Premises

Question 2. Actions of local and general vibration. Stages of Vibration Illness

Question 3. EMF syndrome. The main principles of protection from electromagnetic radiation

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