Safety Moment Presentation - Noise
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Transcript of Safety Moment Presentation - Noise
Noise-induced HearingLoss (NiHL)
PRESENTED By: Adewale Adeniyi
Date: 30/10/15
105, Plot 1b, Ganiyu Bola Hussain Close off Alhaji Hakeem Odumosu Street, Off Rahaman Adebayo Street Lekki Phase 1, Lagos, Nigeria. T: +234-1-2716716-8www.oceon-group.com
QAC-TMP-015 Rev 2.0
Outline
� Noise Concept
� Noise Dose
� Noise Dose Rule of Thumb
� Effect of Noise
� Hearing Loss Video
� Hearing Loss Symptoms� Hearing Loss Symptoms
� Preventions
� Last Words
Noise Concept
� Noise means any unwanted sound.
� It is hazardous at high intensity and long exposure.
� Noise Levels are Expressed as Decibels (dB).
� 1+1+1 does not equal to 3� 1+1+1 does not equal to 3
� The Decibel is a logarithmic unit of measure so we can’t simply add numbers.
Noise Concept
� High Frequency Noise
- Deflects Easier, Easier to Shield and Easier to Insulate
- Power Tools, Saws, Grinders
- Sudden Release of Pressure
- Other High RPM Equipment
� Low Frequency Noise
- Harder to Shield and Harder to Absorb
- Power Presses
- Pumps, Compressors
- Other Low RPM Equipment
Noise Dose
� Regulated as an 8 hour Time Weighted Average (TWA)
� An 8 hr TWA of 90 dBA is designated as a Noise Dose of 100% (OSHA)
Noise Dose – Rule of Thumb
� For each 5 dB increase in noise, in order to be equivalent to the previous dose you must half the allowable exposure time.
95 dBA over 4 Hour TWA Period
100 dBA over 2 Hour TWA Period
105 dBA over 1 Hour TWA Period105 dBA over 1 Hour TWA Period
110 dBA over ½ Hour TWA Period
Noise Dose – Rule of Thumb
Any sound over 90 decibels is considered hazardous with prolonged exposure
Effect of Noise – Hearing Loss
� Major harmful effect of noise is Hearing Loss
� It is called Noise-induced Hearing Loss (NIHL)
� Hearing loss is partial inability to hear
� Deafness is total inability to hear
� It is Preventable
“PARTIAL” --- “TOTAL”
Hearing Loss Symptoms
� Difficulty in understanding what people are saying
� Listening to the television or radio at higher volume than inthe past
� Ringing, Roaring, Hissing, or Buzzing in the ear (tinnitus)
� Ear pain, Itching, or Irritation
Prevention of Noise-induced Hearing Loss
� Major Prevention is Ear Protection
� Use - Earplugs and Earmuffs (@ Noise level > 85db)
– (Earplugs and earmuffs can provide the wearer with at least 5 to 10 dB of attenuation)
� Obey Safety Signs
Prevention of Noise-induced Hearing Loss
� Maintain moderate sound level
� Avoid exposure to sounds of high intensities� Avoid exposure to sounds of high intensities
� Parties, Bars, e.t.c
Last Words…
� The functionality of our hearing contributes alot to our dailyendeavours. Verbal Communication is inevitable
� Having heard this information about Noise Concept and itseffect on our hearing, hearing impairment should beprevented at all times.
� If exposure is not avoidable,