bizSAFE Personal Protective Equipment (PPE) 2

Question 1

For work in a confined space where the atmosphere is oxygen-deficient (below 19.5%), which respiratory protection is required?

Accepted Answer

Self-Contained Breathing Apparatus (SCBA) or airline respirator

Answer

In oxygen-deficient atmospheres, air-purifying respirators are useless as they rely on ambient air; only atmosphere-supplying equipment such as SCBA or airline respirators can be used.

Question 2

When working at heights on a bizSAFE worksite, which PPE combination is typically required?

Accepted Answer

Full-body safety harness, shock-absorbing lanyard, and safety helmet

Answer

Working at heights requires fall arrest equipment — a full-body harness and lanyard — together with a safety helmet to protect against falling objects and head injury during a fall.

Question 3

What is the correct first step when removing (doffing) contaminated PPE to prevent self-contamination?

Accepted Answer

Remove outer gloves first, as they are the most contaminated item

Answer

Gloves are removed first because they are the most contaminated item and their removal technique (peeling inside-out) prevents contaminants from touching bare skin during subsequent doffing steps.

Question 4

Which eye and face protection is most appropriate for grinding operations that produce sparks and high-velocity particles?

Accepted Answer

Indirect-ventilated goggles, ideally with an additional face shield

Answer

Grinding produces high-velocity particles that can bypass safety spectacles; indirect-ventilated goggles provide a sealed fit, and an additional face shield gives secondary protection for the full face.

Question 5

What does a Noise Reduction Rating (NRR) value on hearing protection represent?

Accepted Answer

The laboratory-measured noise attenuation capability of the device

Answer

NRR is determined from standardised laboratory tests; real-world attenuation is typically lower due to fit variability, which is why a derating factor is applied when calculating effective protection.

bizSAFE Practice Test

bizSAFE Practice Test

bizSAFE Personal Protective Equipment (PPE) 2