CSCS Ireland Noise and Vibration 2

Question 1

What is the daily exposure action value (EAV) for hand-arm vibration (HAV) under Irish regulations?

Accepted Answer

2.5 m/s²

Answer

The hand-arm vibration exposure action value is 2.5 m/s² A(8); at this level employers must introduce a programme of controls to reduce exposure and carry out health surveillance.

Question 2

What is the daily exposure limit value (ELV) for hand-arm vibration that must not be exceeded under Irish regulations?

Accepted Answer

5.0 m/s²

Answer

The hand-arm vibration exposure limit value is 5.0 m/s² A(8); exceeding this value is a breach of the regulations and must be prevented by the employer.

Question 3

Which health condition is caused by prolonged exposure to hand-arm vibration from tools such as grinders and breakers?

Accepted Answer

Hand-arm vibration syndrome (HAVS), including vibration white finger

Answer

HAVS is a serious, progressive, and largely irreversible condition affecting blood vessels, nerves, and joints of the hands and arms; vibration white finger (blanching of the fingers) is its best-known symptom.

Question 4

Which of the following construction tools poses the greatest risk of hand-arm vibration injury if used for extended periods?

Accepted Answer

A petrol-powered concrete breaker or angle grinder

Answer

Powered tools such as concrete breakers and angle grinders have high vibration magnitudes and are directly in contact with the hands, making them the principal HAV risk on construction sites.

Question 5

What is the daily exposure action value (EAV) for whole-body vibration (WBV) under Irish health and safety regulations?

Accepted Answer

0.5 m/s²

Answer

The whole-body vibration exposure action value is 0.5 m/s² A(8); above this level employers must take steps to reduce exposure and monitor workers' health.

CSCS Ireland Practice Test

CSCS Ireland Practice Test

CSCS Ireland Noise and Vibration 2