At the end of this lesson you will be able to identify unacceptable conditions when performing a water side inspection on steam drums, moisture separators, headers and tubes of a large water-tube boiler. • Describe how to inspect on a large watertube boiler: – The water side of the steam drum – Moisture separators of a large watertube boiler • Identify facts pertaining how to inspect on a large water-tube boiler: • Headers • Tubes