What is one way to detect overheating in a boiler system?

Monitoring temperature gauges for abnormal readings is a critical method for detecting overheating in a boiler system. Temperature gauges provide real-time data on the thermal condition of the boiler. If the temperature readings rise above the normal operating range, it indicates that the boiler may be overheating, which poses safety risks such as potential boiler damage or even failure. Regularly checking these gauges allows operators to respond quickly to any irregularities, ensuring the operational safety and efficiency of the boiler system.

While listening for unusual noises, checking for steam leaks, and observing changes in color can provide helpful clues regarding the overall health of a boiler system, they do not directly indicate overheating. Unusual noises could suggest operational issues or mechanical failures, but they don't provide specific temperature data. Similarly, steam leaks indicate pressure loss or inefficiency but do not necessarily correlate with overheating. Observing changes in color, whether due to rust or overheating, is less reliable for immediate monitoring of boiler performance. Therefore, the best method among the options for detecting overheating is the direct monitoring of temperature gauges.