New York Low Pressure Boiler COF Practice

In a low pressure boiler, the safety valve must not rise what psi above the MAWP?

1. 10 psi

2. 3 psi

3. 5 psi

4. 15 psi

The correct answer is: 5 psi

The safety valve in a low-pressure boiler is a critical component designed to prevent the boiler from exceeding its Maximum Allowable Working Pressure (MAWP). The MAWP is the highest pressure that the boiler is permitted to operate safely, and the safety valve's primary function is to release steam or other gases if the pressure approaches or exceeds this limit. The stipulation that the safety valve should not rise above 5 psi over the MAWP is based on safety standards and regulations concerning boiler operation. This 5 psi limit ensures that the safety valve can effectively protect the system while allowing for some minor fluctuations in pressure during normal operation. If the pressure were to exceed this threshold, it could lead to a potentially hazardous situation, compromising the integrity of the boiler and posing risks to personnel and property. In essence, the correct answer reflects a safety measure that is consistent with industry standards for low-pressure boilers, ensuring that they operate within safe thresholds while still accounting for operational variations.