New York Low Pressure Boiler COF Practice

How many safety valves are required for an electric boiler operating at a maximum of 1100 kW?

1. 1

2. 2

3. 3

4. 4

The correct answer is: 2

The requirement for safety valves on an electric boiler is based on its input capacity, which in this case is 1100 kW. According to codes and regulations governing boiler systems, the proper number of safety valves is determined by the thermal output and the design specifications that consider the potential for excess pressure due to system failures. For electric boilers, generally, the rule of thumb is to have at least one safety valve for every 800 kW of capacity. Since 1100 kW exceeds this threshold, a second safety valve is mandated to ensure redundancy in safety features. This redundancy helps to prevent overpressure situations, which can lead to dangerous conditions if the primary valve fails. Therefore, two safety valves are necessary to provide adequate protection for an electric boiler operating at 1100 kW. The requirement ensures that if one valve were to malfunction, the other would still be able to relieve pressure, keeping the system within safe operational parameters.