Answer :

Final Answer:

Before moving SMEE cars, the MINIMUM brake pipe pressure is 90 psi. Thus option C is correct.

Explanation:

The minimum brake pipe pressure required before moving SMEE (Self-Propelled Electric Multiple Unit) cars is 90 psi. This pressure is essential to ensure adequate brake force is available to safely control the movement of the cars. A pressure lower than this may result in insufficient braking force, leading to potential safety hazards such as uncontrolled movement or inability to stop the cars when necessary.

Maintaining the brake pipe pressure at 90 psi ensures compliance with safety regulations and industry standards for SMEE operations. It allows for effective braking performance, enabling operators to maneuver the cars safely within rail yards or along tracks. Deviating from this minimum pressure requirement can pose significant risks to both personnel and property, emphasizing the critical importance of adhering to established protocols and safety procedures in rail operations.

In summary, before moving SMEE cars, it is crucial to ensure that the brake pipe pressure is maintained at a minimum of 90 psi. This pressure level guarantees sufficient braking force for safe and controlled movement of the cars, in compliance with safety regulations and industry standards. Adhering to this minimum pressure requirement is essential to mitigate the risks associated with rail operations and prioritize the safety of personnel and infrastructure. Thus option c is correct.

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Rewritten by : Barada