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Ohio BWC Division of Safety and Hygiene • John Canning • Cleveland Service Office • Lausche Office Building • 216-787-3060 (office) • 216-469-6396 (cell) • [email protected] 1 Hearing Conservation and Noise Control 2 WHY?????? • It’s the LAW • Quality of Life • Gradual / Painless 3 Anatomy of the Ear Pinna Semi-Circular Canals Auditory Nerve Cochlea Hammer-Anvil-Stirrup 4 Types of Hearing Loss • Conductive • Central • Sensorineural 5 6 Degree of Risk • • • • Frequency Intensity Duration Individual Variability 7 How Loud is Loud? • • • • • • • Jet engine Threshold of Pain Pneumatic hammer Compressed Air Punch Press Lawn Mower Conversation 140 db 125 db 110 db 105+ db 95 db 90 db 65 db 8 Noise Thermometer 9 Personal Protective Equipment advantages / disadvantages • Cotton Balls • Canal Blockers • Ear Muffs • Ear Plugs • NRRs (example on next page) 10 NRRs • EPA protocol • For “A” scale measurements NRR – 7 Noise exposure 92 dBA Manufacturer’s NRR 32 32 – 7 = 25 (effective noise exposure reduction) 92 – 25 = 67 dBA 11 Exposure Limits • ACGIH 85 dBA (3 dBA) • NIOSH 85 dBA (3dBA) • OSHA 84 dBA (5 dBA) (Action Level) 85 - 89 dBA 90 dBA 12 Noise Monitoring • Required by the OSHA standard to identify all noise above 80 dBA • Monitoring must be performed whenever there is an increase in production or equipment is added that could increase the noise level 13 Audiograms 14 Training requirements • Annual Training • Hearing Conservation Elements • Hearing Protectors 15 Recordkeeping • Monitoring records • Audiometric testing records 16 Noise Control • Engineering • Administrative • Personal Protective Equipment 17 What we’re doing to control noise • Fill in here what you’re company is doing to reduce exposure to noise…….. • Reducing air pressure, • Enclosing loud operations or the operator, • Slowing cycle times, • Rotating workers, • Insulating equipment, breaking the path…. 18 Resources (with some Free Stuff) •http://www.ear.com/hearingconservation/images/OSHA _Poster2.pdf • http://www.howardleight.com/bestpractices/educate 19
