Noise & Vibration

About this topic

Noise and vibration are hazards you cannot see, and the damage they cause is permanent. Hearing loss from construction noise cannot be reversed. The White Card (CPCWHS1001) covers the exposure limits and how to protect yourself from both noise and vibration.

The noise exposure standard

Australian WHS law sets a noise exposure standard of 85 dB(A) averaged over an 8-hour day, and a peak of 140 dB(C). Above these levels, your employer must control the noise and provide hearing protection. As a rough guide, if you have to raise your voice to talk to someone an arm's length away, the noise is likely a problem.

Protecting your hearing

Noise-induced hearing loss is gradual and permanent, there is no cure. The best protection is to reduce noise at the source (quieter tools, barriers, isolation). Where noise remains, hearing protection such as earplugs or earmuffs is used, but remember this is PPE and therefore the last line of defence.

Vibration hazards

Vibration is the other half of this topic. Hand-arm vibration from tools like jackhammers and grinders can cause lasting nerve and circulation damage (sometimes called HAVS), while whole-body vibration from plant and vehicles can harm the back. Limit exposure time, maintain tools, and use anti-vibration equipment where available.

Key facts to remember

• The noise standard is 85 dB(A) over 8 hours, with a 140 dB(C) peak limit.
• Noise-induced hearing loss is permanent and cannot be reversed.
• Reduce noise at the source first; hearing protection (PPE) is the last resort.
• If you must shout to be heard an arm's length away, noise is likely too high.
• Hand-arm and whole-body vibration cause lasting injury, limit exposure.

Frequently asked questions

What is the noise exposure limit on a worksite?
The Australian standard is 85 dB(A) averaged over an 8-hour day, with a peak limit of 140 dB(C). Above this, noise must be controlled and hearing protection provided.

Can noise-induced hearing loss be reversed?
No. Hearing loss caused by noise is permanent and cannot be cured, which is why prevention is so important.

When must I wear hearing protection?
When noise cannot be reduced to safe levels by other means, or when your workplace requires it. Hearing protection is PPE, used after higher controls.

What is hand-arm vibration?
Damage to the nerves and blood vessels of the hands and arms caused by prolonged use of vibrating tools such as jackhammers and grinders. It can become permanent.

Sample exam questions

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