A failed steam trap most commonly causes back pressure in which part of the steam system?

A failed steam trap most commonly causes back pressure in which part of the steam system?

• A. Condensate return line
• B. Boiler feed line
• C. Main steam supply
• D. Vent line

Answer: (A)

Back pressure from a failed steam trap shows up in the condensate return line. The trap’s job is to let condensate drain away while preventing steam from leaking into the return line. If the trap sticks open, live steam can enter the condensate return line along with condensate. That steam raises the pressure in the return line and can push condensate back toward equipment, hindering proper return flow. The other parts—the main steam supply, the boiler feed line, and the vent line—aren’t where this back pressure typically accumulates when a trap fails.

Back pressure from a failed steam trap shows up in the condensate return line. The trap’s job is to let condensate drain away while preventing steam from leaking into the return line. If the trap sticks open, live steam can enter the condensate return line along with condensate. That steam raises the pressure in the return line and can push condensate back toward equipment, hindering proper return flow. The other parts—the main steam supply, the boiler feed line, and the vent line—aren’t where this back pressure typically accumulates when a trap fails.