MARYLAND STATIONARY ENGINEER GRADE 2 EXAM /LATEST
MARYLAND STATIONARY ENGINEER GRADE 2 ACTUAL EXAM
2026/2027& PRACTICE QUESTIONS COMPLETE ACCURATE EXAM
APPROVED QUESTIONS WITH WELL ELABORATED ANSWERS WITH
RATIONALES (100% CORRECT VERIFIED SOLUTIONS) LATEST
UPDATED VERSION 2026 EDITION |GUARANTEED SUCCESS A+ |BRAND
NEW!
1. A Grade 2 stationary engineer in Maryland may operate boilers of any
horsepower and pressure without supervision, and may also:
A) Only operate electric boilers
B) Supervise Grade 3, 4, and 5 engineers – CORRECT ANSWER – Grade 2 is a
supervisory grade above Grade 3, with broader responsibility.
C) Perform ASME Code welding
D) Issue boiler installation permits
2. The maximum allowable accumulation for a power boiler safety valve is:
A) 3% of MAWP
B) 6% of MAWP – CORRECT ANSWER – ASME Section I allows pressure to
rise no more than 6% above MAWP when safety valve is relieving.
C) 10% of MAWP
D) 15% of MAWP
3. A boiler equipped with a superheater must have a safety valve located on the
superheater outlet with a set pressure:
A) Higher than drum safety valves
B) Lower than drum safety valves – CORRECT ANSWER – Superheater safety
valve set at a lower pressure to ensure steam flow through superheater during
relief.
,C) Equal to drum safety valves
D) No safety valve required
4. The minimum required number of low water cutoffs on a high-pressure steam
boiler (over 100 hp) is:
A) One
B) Two – CORRECT ANSWER – ASME and Maryland code require two
independent low water cutoff devices, one of which may be a secondary probe.
C) Three
D) None
5. A boiler’s water column must be connected to the boiler with:
A) Plastic tubing
B) Equalizing pipes of at least 1-inch diameter – CORRECT ANSWER – Prevents
clogging and ensures accurate level transmission.
C) Copper tubing only
D) Flexible hose
6. The term “blowdown” on a safety valve refers to:
A) Removing sludge from boiler
B) The pressure difference between popping and reseating – CORRECT
ANSWER – Expressed in psi or percentage; typically 2–4% for ASME valves.
C) Testing the valve
D) Removing the valve
7. A Grade 2 engineer must have held a lower-grade license for a minimum period
of:
, A) No experience required
B) 1 year as a Grade 3 – CORRECT ANSWER – Maryland experience
requirement for Grade 2 upgrade.
C) 3 years
D) 5 years
8. A boiler operating at 400 psig with a safety valve set at 400 psig must pop open
by no later than:
A) 400 psig
B) 404 psig
C) 424 psig (6% accumulation) – CORRECT ANSWER – 400 × 1.06 = 424 psig
maximum allowable accumulation.
D) 440 psig
9. The purpose of a continuous blowdown system is to:
A) Remove bottom sediment
B) Remove surface water containing dissolved solids – CORRECT ANSWER –
Improves steam purity by reducing TDS at the steam-water interface.
C) Test safety valves
D) Preheat feedwater
10. A deaerator is typically designed to reduce dissolved oxygen to:
A) 10 ppm
B) 0.005 cc/L (7 ppb or less) – CORRECT ANSWER – Prevents oxygen pitting in
high-pressure boilers.
C) 100 ppm
D) 1000 ppm
MARYLAND STATIONARY ENGINEER GRADE 2 ACTUAL EXAM
2026/2027& PRACTICE QUESTIONS COMPLETE ACCURATE EXAM
APPROVED QUESTIONS WITH WELL ELABORATED ANSWERS WITH
RATIONALES (100% CORRECT VERIFIED SOLUTIONS) LATEST
UPDATED VERSION 2026 EDITION |GUARANTEED SUCCESS A+ |BRAND
NEW!
1. A Grade 2 stationary engineer in Maryland may operate boilers of any
horsepower and pressure without supervision, and may also:
A) Only operate electric boilers
B) Supervise Grade 3, 4, and 5 engineers – CORRECT ANSWER – Grade 2 is a
supervisory grade above Grade 3, with broader responsibility.
C) Perform ASME Code welding
D) Issue boiler installation permits
2. The maximum allowable accumulation for a power boiler safety valve is:
A) 3% of MAWP
B) 6% of MAWP – CORRECT ANSWER – ASME Section I allows pressure to
rise no more than 6% above MAWP when safety valve is relieving.
C) 10% of MAWP
D) 15% of MAWP
3. A boiler equipped with a superheater must have a safety valve located on the
superheater outlet with a set pressure:
A) Higher than drum safety valves
B) Lower than drum safety valves – CORRECT ANSWER – Superheater safety
valve set at a lower pressure to ensure steam flow through superheater during
relief.
,C) Equal to drum safety valves
D) No safety valve required
4. The minimum required number of low water cutoffs on a high-pressure steam
boiler (over 100 hp) is:
A) One
B) Two – CORRECT ANSWER – ASME and Maryland code require two
independent low water cutoff devices, one of which may be a secondary probe.
C) Three
D) None
5. A boiler’s water column must be connected to the boiler with:
A) Plastic tubing
B) Equalizing pipes of at least 1-inch diameter – CORRECT ANSWER – Prevents
clogging and ensures accurate level transmission.
C) Copper tubing only
D) Flexible hose
6. The term “blowdown” on a safety valve refers to:
A) Removing sludge from boiler
B) The pressure difference between popping and reseating – CORRECT
ANSWER – Expressed in psi or percentage; typically 2–4% for ASME valves.
C) Testing the valve
D) Removing the valve
7. A Grade 2 engineer must have held a lower-grade license for a minimum period
of:
, A) No experience required
B) 1 year as a Grade 3 – CORRECT ANSWER – Maryland experience
requirement for Grade 2 upgrade.
C) 3 years
D) 5 years
8. A boiler operating at 400 psig with a safety valve set at 400 psig must pop open
by no later than:
A) 400 psig
B) 404 psig
C) 424 psig (6% accumulation) – CORRECT ANSWER – 400 × 1.06 = 424 psig
maximum allowable accumulation.
D) 440 psig
9. The purpose of a continuous blowdown system is to:
A) Remove bottom sediment
B) Remove surface water containing dissolved solids – CORRECT ANSWER –
Improves steam purity by reducing TDS at the steam-water interface.
C) Test safety valves
D) Preheat feedwater
10. A deaerator is typically designed to reduce dissolved oxygen to:
A) 10 ppm
B) 0.005 cc/L (7 ppb or less) – CORRECT ANSWER – Prevents oxygen pitting in
high-pressure boilers.
C) 100 ppm
D) 1000 ppm
