Class 5 Boiler Practice Exam

Steam trap discharge piping must be designed to match what unless vented to atmosphere?

1. capacity

2. pressure

3. temperature

4. material

The correct answer is: pressure

The steam trap discharge piping must be designed to match the pressure of the steam system unless it is vented to the atmosphere. This is crucial because steam traps are responsible for removing condensate, air, and non-condensable gases from the steam system while preventing steam loss. The pressure in the discharge piping needs to be sufficient to handle both the condensate produced and the existing pressure of the steam system, ensuring proper flow and preventing back pressure that could lead to inefficiencies or operational issues. Having the discharge piping correctly matched to the pressure helps maintain the efficiency of the steam system and ensures that condensate is effectively removed. If the piping is not designed to handle the necessary pressure, it could lead to blow-off, leaks, or even system failures, which would compromise both safety and system performance. Thus, matching the pressure is essential for the effective and safe operation of the steam trap and the overall steam system.