What should an engineer do if they find air leaks in the brake system?

Answer: B — Seal them immediately

When an engineer identifies air leaks in the brake system, the appropriate action is to seal them immediately. Air leaks can significantly compromise the performance and safety of the braking system, making it crucial to address such issues without delay. By sealing the leaks as soon as they are detected, the engineer ensures that the brake system maintains optimal pressure and functionality. This proactive measure prevents the potential for further deterioration of the brakes, which can lead to more severe safety hazards on the rail network. Promptly addressing air leaks is essential for maintaining system integrity and reliability. While documenting the issue and scheduling repairs is an important part of the maintenance process, immediate action to seal leaks addresses the problem head-on, minimizing risks associated with compromising brake performance. Ignoring air leaks or continuing to run the brakes without repairs can lead to catastrophic failures, making it vital to act swiftly.