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Hearing Conservation - PowerPoint PPT Presentation


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Hearing Conservation. and Noise Control. WHY??????. It’s the LAW Quality of Life Gradual / Painless. Anatomy of the Ear. Pinna. Semi-Circular Canals. Auditory Nerve. Cochlea. Hammer-Anvil-Stirrup. Types of Hearing Loss. Conductive Central Sensorineural. Degree of Risk. Frequency

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Presentation Transcript
hearing conservation

Hearing Conservation

and

Noise Control

slide2
WHY??????
  • It’s the LAW
  • Quality of Life
  • Gradual / Painless
anatomy of the ear
Anatomy of the Ear

Pinna

Semi-Circular Canals

Auditory Nerve

Cochlea

Hammer-Anvil-Stirrup

types of hearing loss
Types of Hearing Loss
  • Conductive
  • Central
  • Sensorineural
degree of risk
Degree of Risk
  • Frequency
  • Intensity
  • Duration
  • Individual Variability
how loud is loud
How Loud is Loud?
  • Jet engine 140 db
  • Threshold of Pain 125 db
  • Pneumatic hammer 110 db
  • Compressed Air 105+ db
  • Punch Press 95 db
  • Lawn Mower 90 db
  • Conversation 65 db
personal protective equipment advantages disadvantages
Personal Protective Equipmentadvantages / disadvantages
  • Cotton Balls
  • Canal Blockers
  • Ear Muffs
  • Ear Plugs
  • NRRs(example on next page)
slide9
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

exposure limits
Exposure Limits
  • ACGIH 85 dBA
  • NIOSH 85 dBA
  • OSHA 84 dBA

85 - 89 dBA

90 dBA

noise monitoring
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
training requirements
Training requirements
  • Annual Training
  • Hearing Conservation Elements
  • Hearing Protectors
recordkeeping
Recordkeeping
  • Monitoring records
  • Audiometric testing records
noise control
Noise Control
  • Engineering
  • Administrative
  • Personal Protective Equipment
what we re doing to control noise
What we’re doing to control noise
  • Fill in here what you’re company is doing to reduce exposure to noise……..