What action should be taken if a boiler tube fails?

• A. Replace the failed tube
• B. Patch the failed tube
• C. Ignore and continue
• D. Replace the entire boiler

Answer: (A)

When a boiler tube fails, the priority is to restore the pressure boundary safely by replacing the failed tube with a proper new one. A damaged tube compromises the boiler’s ability to contain high-pressure steam or hot water and can lead to leaks, reduced efficiency, or a dangerous rupture if left as is. Patching the tube creates a weak spot that can fail again under operating temperature and pressure, making it an unsafe and unreliable fix. Ignoring the failure would pose serious safety risks, including the potential for a sudden pressure event. Replacing the entire boiler is unnecessarily drastic for a single tube issue and would only be considered if many tubes were compromised or the boiler itself was near the end of its useful life. After replacing the tube, the system should be tested and inspected to verify integrity and safety.