In a boiler with radiant, shock bank, and convection sections, which section lies immediately above the radiant section?

• A. Shock Bank
• B. Convection Section
• C. Radiant Section
• D. Pilot Section

Answer: (A)

In this boiler layout, heat transfer is arranged in stages: the radiant section is where the flame’s heat hits the tubes directly by radiation. Directly above that is the shock bank, which acts as an intermediary zone to absorb thermal shocks and start shaping the flow as it moves toward the convection section. This placement makes the shock bank the section immediately above the radiant portion. The convection section sits above the shock bank, handling heat transfer mainly by convection, while the pilot section isn’t used as a primary heat-transfer zone and serves more for starting and sustaining the flame.