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Drop the volume New Zealand Safety Week

Noise induced hearing loss - Drop the volume!

Also available as a power point presentation with speaking notes.

Why care about noise in your workplace?

What does the Health and Safety Act tell us?

So what are acceptable levels of noise?

‘Average’ level over eight hours = 85 dB
‘Peak’ (or upper limit)  = 140 dB

So do I need to be a scientist?

NO! You can perform a Preliminary Noise Survey yourself

Then what?

Noise control options

Table 1: Noise control map
 
Engineering
Admin
PPE
Source
Modify process or equipment
Substitute/ eliminate
Maintenance
‘Buy quiet’
Path
Absorbers
Enclosures
Isolate
Isolate noise:
by time
by location
Receiver
Restrict exposure
Training & education
Plugs or Muffs

What can workplaces do to control noise?

For new workplaces or existing workplaces that are having new plant installed:

For existing workplaces

Table 2: Accepted exposure times for noise before damage occurs

 Noise Exposure   dB(A)
Duration per day before damage occurs
85 8 hours
88 4
91 2
94 1
97 30 mins
100 15
103 8
106 4
109 2
115 30 secs

Consider how to reduce noise transmission