New York Low Pressure Boiler COF Practice

What is the maximum psig allowed for cast iron and malleable iron water columns?

1. 200 psig for cast iron and 300 psig for malleable iron

2. 250 psig for cast iron and 350 psig for malleable iron

3. 500 psig for both materials

4. 400 psig for cast iron and 450 psig for malleable iron

The correct answer is: 250 psig for cast iron and 350 psig for malleable iron

The correct answer is based on the pressure limitations set forth for cast iron and malleable iron materials, which are important in ensuring safety and operational effectiveness in boiler systems. Cast iron water columns are permitted a maximum pressure of 250 psig, while malleable iron water columns can handle up to 350 psig. These limits are determined by the materials' structural integrity and their ability to withstand pressure without risk of failure. Understanding these specifications is essential for boiler operators to prevent potential accidents or equipment failure, which can arise from exceeding the maximum pressure ratings. The values reflect industry standards that take into account the inherent properties of the materials used in the construction of water columns.