USCG Exam PracticeBoiler and steam propulsion fundamentals
What condition does a sudden rise in chloride levels in boiler water most likely indicate?
- A. Excessive alkalinity from over-treatment with chemical additives
- B. Scale formation caused by calcium and magnesium hardness salts
- ✓ Seawater contamination, such as from a condenser tube leakCorrect
- D. Dissolved oxygen entering the system through the deaerating feed tank
Why C is correct
A sudden rise in chlorides is a direct indicator of seawater contamination, most commonly caused by a condenser tube leak. This must be identified and corrected promptly because seawater contamination leads to scaling and corrosion of the boiler. (NAVEDTRA 14104 §4-5)
Cited:NAVEDTRA 14104 §4-5