VARIANT 13. VARIANT 14

VARIANT 13

Task 1

There is the noise in hospital wards. General noise level – 40 dB. Power of this noise does not change more than 5 dB. It consist of 1 octave of sounds which level more than another ones on 10 дБ. The noise includes the sounds with frequency of oscillation less than 400 Hz. Give the hygienic estimation about this noise.

Task 2

Peter F. works at factory durind 7 years. On his workplace there is non constant, high-frequency noise. General noise levels – 80 dB. He does not hear whispering speech durind 1 – 3 minutes after work ( fall of hearing on 15-20 dB ). Make the diagnosis. What preventive measures is it necessary in this case?

Question 1. Actions of Noise on Organism Maximal Permissible Levels of Noise for Various Premises.

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

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

VARIANT 14

Task 1

There is the noise in hospital wards. General noise level – 80 dB. Power of this noise does not change more than 40 dB. It consist of 5 octave of sounds. The noise includes the sounds with frequency of oscillation less than 800 Hz. Give the hygienic estimation about this noise.

Task 2

Fiona F. works at factory durind 7 years. On his workplace there is non constant, high-frequency noise. General noise levels – 65 dB. He does not hear whispering speech durind 1 hours after work ( fall of hearing on 15-20 dB ). Make the diagnosis. What preventive measures is it necessary in this case?

Question 1. Actions of Noise on Organism Maximal Permissible Levels of Noise for Various Premises.

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

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

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