Hotel Service Unit 15 Q1 Quiz

Correct Answer:
C) Class K (cooking oils)

Explanation:
Dry powder extinguishers are generally not suitable for Class K fires involving cooking oils, as they can spread the fire rather than extinguish it effectively.

Correct Answer:
B) Ensuring the pressure gauge is within the operable range

Explanation:
Checking the pressure gauge ensures that the extinguisher is ready for use, as it indicates whether the internal pressure is within the safe and effective operating range.

Correct Answer:
B) Recharge and inspect it immediately to ensure it is ready for use

Explanation:
Once an extinguisher has been partially used, it must be recharged and inspected to ensure full readiness for any future emergencies, as even a slight discharge reduces its capacity.

Correct Answer:
B) Ignition that occurs without an external ignition source, due to internal chemical reactions generating heat

Explanation:
Spontaneous combustion occurs when materials self-heat due to internal chemical or biological reactions, reaching ignition without an external source, such as in oily rags that oxidize over time.

Correct Answer:
A) Ensure ventilation, as CO₂ displaces oxygen

Explanation:
Since CO₂ extinguishers work by displacing oxygen, they reduce breathable air in enclosed spaces, making it essential to ventilate the area afterward to avoid asphyxiation.

Correct Answer:
D) Pull the pin, aim at the base of the fire, squeeze the handle, and release CO₂ until the fire is out

Explanation:
CO₂ extinguishers work by removing oxygen and cooling the fire. For best results, aim at the fire’s base and avoid holding the horn, as CO₂ can make it extremely cold.

Correct Answer:
A) Monthly visual inspections and annual servicing by a certified professional

Explanation:
UK and international legislation recommends monthly visual checks for obvious damage or pressure loss and a more thorough annual servicing to ensure full operational readiness.

Correct Answer:
B) Class D (flammable metals)

Explanation:
Dry powder extinguishers are effective on Class D fires (flammable metals) as well as Classes A, B, and C, providing versatile fire suppression without the need for water.