CSCS Personal Protective Equipment 4 — Questions and Answers
Question 1: Which safety helmet colour is traditionally used by site supervisors on UK construction sites?
- White (Correct answer)
- Yellow
- Blue
- Black
Correct answer: White
White helmets are traditionally worn by site managers and supervisors on UK construction sites, though colour coding can vary by company.
Question 2: What does 'APF' mean when selecting RPE for a specific hazard?
- Approved Protection Factor — a legal certification number
- Assigned Protection Factor — the expected level of protection a respirator provides (Correct answer)
- Air Purification Function — how the filter cleans air
- Atmospheric Pressure Filter — relevant to confined spaces
Correct answer: Assigned Protection Factor — the expected level of protection a respirator provides
Assigned Protection Factor (APF) is the level of protection a properly worn respirator is expected to provide to trained users in a workplace.
Question 3: A pair of safety goggles is fogged and the worker removes them while cutting tiles. What is the main risk?
- The worker may trip due to poor visibility
- Flying tile fragments could cause serious eye injury (Correct answer)
- The worker may inhale more silica dust
- The worker may drop tools due to distraction
Correct answer: Flying tile fragments could cause serious eye injury
Tile cutting produces high-velocity fragments that can cause permanent eye damage; removing goggles even briefly creates serious risk.
Question 4: How often should a full-body safety harness be formally inspected by a competent person?
- Daily before each use and at least every 6 months by a competent person (Correct answer)
- Once a year by the manufacturer only
- Every 5 years as per CE certification
- Only after a fall event has occurred
Correct answer: Daily before each use and at least every 6 months by a competent person
Harnesses should be checked by the user before each use and formally inspected by a competent person at least every 6 months.
Question 5: What type of PPE is specifically required when working with wet concrete?
- Chemical-resistant gloves and waterproof boots, as concrete is alkaline and causes burns (Correct answer)
- Only standard leather gloves to keep hands dry
- A hard hat rated for chemical exposure
- UV-protective glasses as concrete reflects light
Correct answer: Chemical-resistant gloves and waterproof boots, as concrete is alkaline and causes burns
Wet concrete is strongly alkaline and causes chemical burns to skin; chemical-resistant gloves and waterproof boots are essential protection.
Question 6: If a construction site requires hearing protection, what does this indicate about the noise levels?
- Noise is above 80 dB(A) at the hearing protection zone boundary
- Noise is below 70 dB(A) and protection is optional
- Noise is above 87 dB(A) and protection is mandatory (Correct answer)
- Noise is measured above 100 dB(A) for impulse sounds only
Correct answer: Noise is above 87 dB(A) and protection is mandatory
UK regulations require mandatory hearing protection when noise levels reach or exceed the upper exposure action value of 85 dB(A), or where the peak sound pressure is 137 dB(C).
Question 7: What should a worker do with used disposable PPE such as contaminated gloves or dust masks at the end of a shift?
- Leave them on site for others to reuse the next day
- Dispose of them in the appropriate waste container and wash hands (Correct answer)
- Take them home to wash and reuse
- Store them in a shared PPE locker for the next worker
Correct answer: Dispose of them in the appropriate waste container and wash hands
Disposable PPE must be discarded in proper waste containers after each use to prevent cross-contamination, and hands should be washed afterward.
CSCS Personal Protective Equipment 4
Which safety helmet colour is traditionally used by site supervisors on UK construction sites?