🔍 Key Concepts

• Purpose of drain systems on slow-speed diesel exhausts • Where water actually comes from in an operating exhaust system • Difference between normal operating byproducts vs. fault/leak conditions

💭 Think About

• Ask yourself: during normal engine operation, what kind of liquid is commonly present in exhaust piping even when everything is working correctly? • Which option describes something that would be expected and continuous, rather than an occasional fault or unusual condition? • Which of these liquids would the designer MOST want to remove to prevent corrosion and water accumulation in the exhaust piping?

✅ Before You Answer

• Identify which choice describes a normal, continuous byproduct of combustion and cooling, not a malfunction. • Consider which liquid would most likely collect in low points of the exhaust regardless of weather or sea state. • Eliminate any options that rely on abnormal conditions like leaking injectors or unusual sea states.