Arkansas Boiler Operator Practice Exam

What is an important characteristic of a steam trap?

1. To store excess steam for later use

2. To remove condensate and air without allowing steam to escape

3. To increase steam pressure for efficient operation

4. To monitor boiler temperature

The correct answer is: To remove condensate and air without allowing steam to escape

A steam trap plays a critical role in the efficient operation of a steam system by removing condensate and air while preventing the escape of steam. When steam is used in heating and process systems, it condenses back into water (condensate) as it cools, and this condensate must be removed to maintain the energy efficiency of the system and to prevent water hammer, corrosion, or other issues that can arise from the presence of excess water. Additionally, air in the system can create a barrier that reduces heat transfer efficiency and can lead to operational problems. A properly functioning steam trap allows condensate and air to escape, ensuring that only steam remains in the system to do its work. This helps to maintain optimal pressure and temperature conditions necessary for efficient operation. The other choices present functions that are not aligned with the purpose of a steam trap. Storing excess steam for later use does not occur with a steam trap since its primary function is to manage the flow of steam and condensate. Increasing steam pressure is typically handled by a boiler and controls, not by a steam trap. Monitoring boiler temperature is a separate function usually carried out by thermometers and gauges rather than steam traps.