CHICAGO STATIONARY ENGINEER
LICENSURE 2026 FULL QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ Boiler pH.
Answer: The pH should be between 7-9 (8.5). Acid attack pH below 8.5,
caustic attack above 12.9.
⩥ Blowoff Tank Outlet Size.
Answer: 2 times the diameter of the blowdown piping, 6 inches internal
entering the bottom of the blow off tank.
⩥ Clogged Strainers.
Answer: Deep vacuum.
⩥ Heat Recovery Steam Generators (HRSG).
Answer: Water chemistry is harder to maintain during start ups and shut
down.
⩥ Welding Control.
Answer: An engineer supervising a welding company approved by the
D.O.B.
,⩥ Remote Disconnect Label.
Answer: Remote control for burner.
⩥ Deficiency of Air Supply.
Answer: High heat loss.
⩥ Electric Remote Shut Down Location.
Answer: Egress of the boiler room.
⩥ Steam Gauge Dial Graduation.
Answer: Approx double the PSI that the safety valve is set to, but never
less than 1.5 times the pressure.
⩥ Certified Welder Report Maintenance.
Answer: The welding agency, must be available to the DOB.
⩥ Standard Non-Mercury Gauge Label.
Answer: Name of manufacturer.
⩥ Boiler Requirements.
Answer: One pressure gauge.
, ⩥ Inspector Notice Posting.
Answer: On or near the boiler.
⩥ Feed Water Chemicals Testing Frequency.
Answer: Daily.
⩥ Records of Boiler Alterations.
Answer: Owner and on premises.
⩥ Material for Reseating Steam Valves.
Answer: Stellite.
⩥ Cast Iron Header Pressure Limit.
Answer: 160 Psi.
⩥ Bottom Blow Off Frequency.
Answer: Daily.
⩥ S Stamp Meaning.
Answer: Power boiler (high pressure).
⩥ H Stamp Meaning.
LICENSURE 2026 FULL QUESTIONS WITH
SOLUTIONS GRADED A+
⩥ Boiler pH.
Answer: The pH should be between 7-9 (8.5). Acid attack pH below 8.5,
caustic attack above 12.9.
⩥ Blowoff Tank Outlet Size.
Answer: 2 times the diameter of the blowdown piping, 6 inches internal
entering the bottom of the blow off tank.
⩥ Clogged Strainers.
Answer: Deep vacuum.
⩥ Heat Recovery Steam Generators (HRSG).
Answer: Water chemistry is harder to maintain during start ups and shut
down.
⩥ Welding Control.
Answer: An engineer supervising a welding company approved by the
D.O.B.
,⩥ Remote Disconnect Label.
Answer: Remote control for burner.
⩥ Deficiency of Air Supply.
Answer: High heat loss.
⩥ Electric Remote Shut Down Location.
Answer: Egress of the boiler room.
⩥ Steam Gauge Dial Graduation.
Answer: Approx double the PSI that the safety valve is set to, but never
less than 1.5 times the pressure.
⩥ Certified Welder Report Maintenance.
Answer: The welding agency, must be available to the DOB.
⩥ Standard Non-Mercury Gauge Label.
Answer: Name of manufacturer.
⩥ Boiler Requirements.
Answer: One pressure gauge.
, ⩥ Inspector Notice Posting.
Answer: On or near the boiler.
⩥ Feed Water Chemicals Testing Frequency.
Answer: Daily.
⩥ Records of Boiler Alterations.
Answer: Owner and on premises.
⩥ Material for Reseating Steam Valves.
Answer: Stellite.
⩥ Cast Iron Header Pressure Limit.
Answer: 160 Psi.
⩥ Bottom Blow Off Frequency.
Answer: Daily.
⩥ S Stamp Meaning.
Answer: Power boiler (high pressure).
⩥ H Stamp Meaning.
