PART 2.Noise exposure problems (20 points) For each of these examples, calculate the total dose of noise exposure and make a specific recommendation...

PART 2. Noise exposure problems (20 points)

For each of these examples, calculate the total dose of noise exposure and make a specific recommendation (if needed) to reduce the dose. Be sure to consider the field attenuation factor for any PPE you might recommend. Available PPE includes foam ear plugs with NRR=27 or ear muffs with NRR=33. Use field attenuation equation (NRR-7)/2

A metal fabrication worker's typical day:

                                               Allowable                 Dose

8:00-9:45      95 dB

9:45-10:00    80 dB

10:00-11:30  90 dB

11:30-12:00  75 dB

12:00-2:00    95 dB

2:00-2:15      80 dB

2:15-4:30      90 dB

TOTAL DOSE

           Recommendation

           Effective dose with implementation

Night Shift factory maintenance worker

                                              Allowable                 Dose