HEARING CONSERVATION (APPENDIX A)

Question 1

HEARING CONSERVATION (APPENDIX A)
Any operation that produces noise levels above ?? dbA require to have signage that indicates hearing protection is required

Answer 1

85 dbA

Question 2

HEARING CONSERVATION (APPENDIX A)
•	Noise reduction rating (NRR)
o	3M 1100 Reusable ear plugs – NRR ?? dbA
o	QM 24 Quiet Muff – NRR ?? dbA
o	Using both at same time – NRR ?? dbA

Answer 2

• Noise reduction rating (NRR)
o 3M 1100 Reusable ear plugs – NRR 29 dbA
o QM 24 Quiet Muff – NRR 25 dbA
o Using both at same time – NRR 54 dbA

Question 3

HEARING CONSERVATION (APPENDIX A)
• Personnel exposed to ?? dbA or more shall wear ear plugs
• Personnel exposed to ??? dbA or more shall wear both plugs and muffs

Answer 3

• Personnel exposed to 85 dbA or more shall wear ear plugs

* Personnel exposed to 114 dbA or more shall wear both plugs and muffs

Question 4

HEARING CONSERVATION (APPENDIX A)
What is the hand signal for "Firefighter to come to my location for a face to face"?

Answer 4

Point to firefighter and place hand on top of head