ABSTRACT
The auxiliaries breathe life into an otherwise static boiler made of pressure parts (PPs) and nonpressure parts (NPPs). The auxiliaries, generating and regulating the fl ows, are present in the following two circuits:
1. Air and gas circuit that comprises a. Fans b. Dust-collecting equipment c. Dampers 2. Steam and water circuit that comprises a. Feed pumps and circulation pumps b. Valves, mountings, and fi ttings c. Soot blowers (SBs)
Soot blowers are aid not involved in the movement and control of fl uids but in removing the soot or dust deposited on the heating surfaces (HSs) of the boiler. They are unique to the boilers.
