Identify a common symptom resulting from insufficient heat absorption in boiler tubes.

A common symptom resulting from insufficient heat absorption in boiler tubes is thin-lipped ruptures. When the heat transfer in a boiler is inadequate, the metal in the tubes can experience rapid temperature fluctuations. This can lead to thermal stress, causing cracks to form at the tube's surface. Thin-lipped ruptures specifically are a sign that the material's integrity has been compromised due to these stressors, and they can occur on the surface of the metal from overheating and subsequent cooling cycles.

In the context of boiler operation, insufficient heat absorption typically leads to localized overheating, wherein parts of the metal become weakened. The presence of thin-lipped ruptures is indicative of structural failure resulting from these conditions, directly linked to insufficient heat handling capabilities.

Other symptoms, while relevant to boiler issues, do not specifically result from insufficient heat absorption in the same manner. For instance, cavitation relates more to fluid dynamics and pressure drops than heat transfer. Corrosion, while it can occur as a result of various operational issues, is not a direct symptom of heat absorption failure. Circumferential grooving can result from continued operation under different conditions, including flow-induced vibration rather than solely from inadequate heat absorption. Thus, thin-lipped ruptures provide a clearer link to the