OCCC Hearing and The Lack of It NRR formula Questions

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1.Using the SF NRR formula what would the real-world rating be for a HPD that is rated -15db(A)?

2. Same question but a rating of -25?

3.Last one, rating of -10?

4.What is the difference between a NRR and the SF rating?

5.What does the worker do to get the SF rating, (basically, two things)?

6.Which rating has a higher reduction rating, NRR or SF?

7.Why is being able to determine a true reduction rating important to a hearing conservation program?

8.What are the three things that can be done to reduce noise exposure?

9.When should a worker wear HPD?

10.What are the four, (4) C’s?


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