Basic Operations Firefighter Certification Practice Exam

Which method is used by two firefighters to break tight couplings without a spanner wrench?

1. Hook and loop method

2. Stiff arm method

3. Coupling twist method

4. Breaking coupling method

The correct answer is: Stiff arm method

The stiff arm method is a technique employed by firefighters to safely and effectively break tight couplings when a spanner wrench is not available. This method involves using leverage and body mechanics to create enough force to loosen the coupling without damaging the equipment. Firefighters position themselves appropriately, using their arms to apply pressure while maintaining control and stability. This approach emphasizes safety and minimizes the risk of injury or damage during the coupling process. By contrast, other methods mentioned may not provide the necessary control, leverage, or safety required in such situations. For instance, the coupling twist method might involve twisting the couplings more than is safe, leading to potential damage. Similarly, hook and loop or breaking coupling methods could lack the necessary stabilization provided by the stiff arm technique, making them less effective or even unsafe in the field.