MD STATIONARY ENGINEER GRADE 2 EXAM
2026 MASTER REVIEW AND PRACTICE
MANUAL
◉ Purge is done in high fire position. The boiler goes to low fire
position to light off Answer:
◉ The microprocessor control system ensures the boiler is in low
fire before lighting Answer:
◉ Ultraviolet flame scanner is popular method for proving flame
Answer:
◉ The positioning control system and metering control system
require clean, dry air Answer:
◉ Hunting is rapid opening and closing of the controls Answer:
◉ Metering control systems give a more accurate means of
controlling steam pressure (variations) than positioning controls.
They are more accurate to fluctuating steam pressure. Answer:
, ◉ Gate valves are used to connect pressure gauge to siphon because
they offer no restriction to flow Answer:
◉ Opacity control is used to monitor boiler emissions Answer:
◉ A rotometer is a variable area flow meter used to measure flow
usually in GPM's Answer:
◉ Phosphates are used to treat a boiler because they turn calcium
and magnesium into a non-adhering sludge that can be blown down
easily. Answer:
◉ Oxygen pitting is caused by air in the system. The deaerator uses
high temperature to push air from the feedwater. Sodium sulfite eats
the rest of the oxygen. Answer:
◉ Boiler PH is generally maintained between 7-10 on the PH scale
Answer:
◉ If low water cutoff trips, you do not have to purge before re-
lighting burner Answer:
◉ Hydrostatic test- fill boiler with water. The water should be at
least 70 degree F or warmer then the ambient air. The safety valve
2026 MASTER REVIEW AND PRACTICE
MANUAL
◉ Purge is done in high fire position. The boiler goes to low fire
position to light off Answer:
◉ The microprocessor control system ensures the boiler is in low
fire before lighting Answer:
◉ Ultraviolet flame scanner is popular method for proving flame
Answer:
◉ The positioning control system and metering control system
require clean, dry air Answer:
◉ Hunting is rapid opening and closing of the controls Answer:
◉ Metering control systems give a more accurate means of
controlling steam pressure (variations) than positioning controls.
They are more accurate to fluctuating steam pressure. Answer:
, ◉ Gate valves are used to connect pressure gauge to siphon because
they offer no restriction to flow Answer:
◉ Opacity control is used to monitor boiler emissions Answer:
◉ A rotometer is a variable area flow meter used to measure flow
usually in GPM's Answer:
◉ Phosphates are used to treat a boiler because they turn calcium
and magnesium into a non-adhering sludge that can be blown down
easily. Answer:
◉ Oxygen pitting is caused by air in the system. The deaerator uses
high temperature to push air from the feedwater. Sodium sulfite eats
the rest of the oxygen. Answer:
◉ Boiler PH is generally maintained between 7-10 on the PH scale
Answer:
◉ If low water cutoff trips, you do not have to purge before re-
lighting burner Answer:
◉ Hydrostatic test- fill boiler with water. The water should be at
least 70 degree F or warmer then the ambient air. The safety valve
