What is the purpose of the Emergency Feed and Feed Transfer Pump service air connection?

What is the purpose of the Emergency Feed and Feed Transfer Pump service air connection?

• A. To supply feedwater to the boiler if the main feed pump fails
• B. To vent the boiler
• C. To start the main feed pump
• D. To cool the feedwater pump

Answer: (A)

The service air connection powers a backup system designed to keep the boiler fed when the main feed pump isn’t available. The Emergency Feed and Feed Transfer Pump uses compressed air from the service air system to start and drive the pump, allowing it to deliver feedwater to the boiler if the primary feed pump fails or to transfer water as needed. This maintains proper boiler water level and prevents damage from low-water conditions. It isn’t used to vent the boiler, it doesn’t start the main feed pump (that has its own control), and it isn’t for cooling the pump.

The service air connection powers a backup system designed to keep the boiler fed when the main feed pump isn’t available. The Emergency Feed and Feed Transfer Pump uses compressed air from the service air system to start and drive the pump, allowing it to deliver feedwater to the boiler if the primary feed pump fails or to transfer water as needed. This maintains proper boiler water level and prevents damage from low-water conditions. It isn’t used to vent the boiler, it doesn’t start the main feed pump (that has its own control), and it isn’t for cooling the pump.