CDL Air Brakes TestAir Brake System PartsMedium
A technician is inspecting a commercial vehicle's air brake system and notices that one of the air tanks has a small, continuous air leak around a weld seam. What is the most appropriate action to take?
- AAttempt to re-weld the seam for a quick repair.
- BApply a sealant to the weld seam to stop the leak.
- CReplace the entire air tank immediately.
- DMonitor the leak for a few days to see if it worsens before acting.
Show answer & explanationAnswer & explanation
Correct answer: C. Replace the entire air tank immediately.
Air tanks are pressure vessels designed to withstand high pressures. A leak around a weld seam indicates structural integrity compromise, making repair unsafe. Immediate replacement is required to prevent catastrophic failure.
Why the other options are wrong
- A. Re-welding a pressurized vessel without proper certification, testing, and emptying can be extremely dangerous and is generally not permissible for critical components like air tanks.
- B. Sealants are temporary and unsafe for high-pressure air tank repairs, as they do not restore structural integrity.
- D. Monitoring a structural leak in a pressure vessel is unsafe; the leak could rapidly worsen, leading to tank rupture.
Air Storage Tank Integrity
Air storage tanks must be free from damage, corrosion, and leaks, especially around welds, as they are critical pressure vessels in the air brake system.
- Structural integrity is paramount for safety.
- Leaks or damage necessitate immediate replacement.
- Repairs to pressure vessels are highly regulated and often not permitted for field fixes.
Memory trick: A tank's integrity is like a shield; a crack means the battle's yielded.