SMSTS Health and Welfare 3

Question 1

What is the daily hand-arm vibration exposure limit value (ELV) that must not be exceeded under the Control of Vibration at Work Regulations 2005?

Accepted Answer

5.0 m/s²

Answer

The daily hand-arm vibration exposure limit value is 5.0 m/s², which must never be exceeded as it represents an unacceptable risk of permanent health damage.

Question 2

What is the first step in the COSHH hierarchy of controls when dealing with a hazardous substance on a construction site?

Accepted Answer

Eliminate the use of the hazardous substance entirely

Answer

Elimination — removing the hazardous substance entirely or substituting it with a safer alternative — is the first and most effective step in the COSHH hierarchy of controls.

Question 3

Which part of the body is primarily affected by whole-body vibration (WBV) in construction workers operating mobile plant?

Accepted Answer

The lower back and spine

Answer

Whole-body vibration primarily affects the lower back and spine, and is caused by sitting on vibrating mobile plant such as dumpers, excavators, and forklift trucks on rough terrain.

Question 4

How frequently must welfare facilities on a construction site be inspected and maintained under CDM 2015?

Accepted Answer

Regularly and as often as necessary to keep them clean and in good repair

Answer

CDM 2015 requires welfare facilities to be kept clean and in good repair at all times, meaning inspection frequency must be sufficient to maintain this standard throughout the project.

Question 5

What is the primary benefit of occupational health monitoring for construction workers regularly exposed to respirable crystalline silica (RCS) dust?

Accepted Answer

Early detection of respiratory conditions before they become irreversible

Answer

Occupational health monitoring for silica dust allows early identification of conditions such as silicosis before they progress to severe, irreversible lung disease, enabling timely intervention.

(SMSTS) Site Management Safety Training Scheme Practice Test

(SMSTS) Site Management Safety Training Scheme Practice Test

SMSTS Health and Welfare 3