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How many gauge cocks are there on a boiler with over 36 inches and more than 100 sq ft of surface area?

  1. 1

  2. 2

  3. 3

  4. 4

The correct answer is: 3

A boiler with more than 36 inches in height and a surface area exceeding 100 square feet is required to have three gauge cocks. Gauge cocks are essential for monitoring the water level and pressure within the boiler, ensuring safe and efficient operation. The specific requirement of three gauge cocks is established to provide operators with multiple points of reference for verifying the water level, which aids in maintaining proper water levels, preventing overheating, and avoiding dangerous pressure fluctuations. This redundancy is crucial in large boilers, where the consequences of incorrect readings could lead to significant safety hazards.