AFF Exit Exam • Set 4 Question 3 of 30

An important step in fighting any electrical fire is to:

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Direct Answer

Option B: De-energize the circuit

De-energizing the circuit is the most critical step when fighting an electrical (Class C) fire. This removes the power source, preventing electric shock hazards and the risk of reignition.

All Options

Increase ventilation

De-energize the circuit (Correct Answer)

Use chemical foam

Apply water fog immediately

Detailed Explanation & Context

De-energizing the circuit is the most critical step when fighting an electrical (Class C) fire. This removes the power source, preventing electric shock hazards and the risk of reignition.

Relevant Framework: STCW 2010 Manila Amendments • DG Shipping E-Learning & Exit Exam Standards • Advanced Fire Fighting (AFF).

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Q1 What is NOT a characteristic of carbon dioxide fire-extinguishing agents? Q2 In a fixed carbon dioxide extinguishing system for a machinery space, designed WITH a stop valve in the line leading to the protected space, the flow of CO2 is established by actuating: Q3 An important step in fighting any electrical fire is to: Q4 Which fire detection system is actuated by sensing a heat rise in a compartment? Q5 Water fog is an effective firefighting agent because it: Q6 A fire of escaping liquefied flammable gas is best extinguished by: Q7 When combating a Class C fire, which of the following dangers may be present? Q8 The lowest temperature at which the vapors of a flammable liquid will ignite and cause self-sustained combustion in the presence of a spark or flame is the: Q9 The fire protection provided for the propulsion motor and generator of a diesel-electric drive vessel is usually a: Q10 Metal fires should be fought using which extinguisher type?