What is the maximum allowable brake pipe leakage in the Locomotive Air Brake Test?

In the context of the Locomotive Air Brake Test, the maximum allowable brake pipe leakage is specifically set at 5 psi per minute. This standard is crucial for ensuring the safety and efficiency of the braking system on locomotives. If the leakage exceeds this limit, it could indicate potential issues in the integrity of the brake system, which could lead to ineffective braking and compromise overall safety during operations.

The rationale behind this regulation is to maintain a reliable and responsive braking system. Brake pipe leakage that exceeds 5 psi per minute could result in insufficient brake pressure, causing delays in stopping distances and potentially leading to hazardous situations. Thus, adhering to this standard helps to ensure that the braking systems are functioning appropriately, promoting operational safety across the railroad network.