A hot water heating boiler is a "low pressure boiler" in Ohio up to what limits?Ohio Revised Code 4104.01(F)
A stationary steam engine is over the horsepower limit in R.C. 4104.05(C). Which license does the section name for running it?Ohio Revised Code 4104.05(C)
Above what heating surface does a low pressure steam boiler need a licensed operator?Ohio Revised Code 4104.05(A)
At what size does a stationary steam engine need a licensed steam engineer?Ohio Revised Code 4104.05(C)
Does a steam turbine count as a "stationary steam engine" under R.C. 4104.01(I)?Ohio Revised Code 4104.01(I)
How does Ohio law define a "power boiler"?Ohio Revised Code 4104.01(D)
How may an unlicensed person lawfully operate a boiler that needs a licensed operator?Ohio Revised Code 4104.05
What is the penalty for violating R.C. 4104.05, the operator licensing section?Ohio Revised Code 4104.99(B)
Which boilers are outside sections 4104.01 to 4104.20 altogether, by 4104.04(A)?Ohio Revised Code 4104.04(A)
Which licenses allow a person to operate a power boiler with more than 360 square feet of heating surface?Ohio Revised Code 4104.05(B)
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Ohio law: examination, license and fees 12
An engineer holds a license from another state. Under what chapter does Ohio license that applicant?Ohio Revised Code 4104.19(H)
How early may the holder of an unexpired license apply to renew it without reexamination?Ohio Revised Code 4104.19(F)
How much experience does R.C. 4104.19(B) ask of an applicant?Ohio Revised Code 4104.19(B)
How old must a person be to take the examination for a steam engineer license?Ohio Revised Code 4104.19(B)
What bars an applicant from the examination or from renewal under R.C. 4104.19(C)?Ohio Revised Code 4104.19(C)
What is the application fee for a steam engineer or boiler operator license?Ohio Revised Code 4104.18(D)
What is the fee for each original or renewal steam engineer license?Ohio Revised Code 4104.18(D)
When does a license issued under Chapter 4104 expire?Ohio Revised Code 4104.19(F)
When must the license application be filed, measured from the day the examination is offered?Ohio Revised Code 4104.19(A)
Which fee is the superintendent barred from raising by rule?Ohio Revised Code 4104.18(E)
Who issues the steam engineer license to an applicant who passes?Ohio Revised Code 4104.19(D)
Who may prepare, administer and score the license examinations under R.C. 4104.19(E)?Ohio Revised Code 4104.19(E)
Ohio rule: attendance at the boiler or engine 8
For how long may a steam boiler run with no one in attendance under O.A.C. 4101:4-10-01(B)(2)?Ohio Administrative Code 4101:4-10-01(B)(2)
How often must the process hazard analysis for an unattended boiler be reviewed and updated?Ohio Administrative Code 4101:4-10-01(B)(5)
O.A.C. 4101:4-10-01(B)(4) lets a non-solid-fuel-fired steam boiler run unattended on an ASME CSD-1 control system below what fuel input rating?Ohio Administrative Code 4101:4-10-01(B)(4)
Under O.A.C. 4101:4-10-01(B)(5), what analysis must the owner file before installing a large boiler for unattended operation?Ohio Administrative Code 4101:4-10-01(B)(5)
What attendance does Ohio's rule require while a steam boiler over 360 square feet is operating?Ohio Administrative Code 4101:4-10-01(B)
When may the attendance be kept from a central control room on the premises?Ohio Administrative Code 4101:4-10-01(B)(1)
Where must a licensed person be when a boiler runs under an approved automated electronic monitoring plan?Ohio Administrative Code 4101:4-10-01(B)(3)
Who must approve a site-specific plan for automated electronic monitoring?Ohio Administrative Code 4101:4-10-01(B)(3)
Ohio law: inspections and certificates of operation 9
A power boiler on the two-year inspection interval needs a record of boiler water samples taken how often?Ohio Revised Code 4104.13
An inspector finds an explosion hazard posing imminent danger and seals the boiler. For how long at most does the cease order run by itself?Ohio Revised Code 4104.15(D)
How does the owner prepare a boiler for internal inspection?Ohio Revised Code 4104.14
How often must a low pressure boiler that is not cast iron be inspected internally?Ohio Revised Code 4104.11(B)
How often must a power boiler be inspected internally and externally, absent approval for a longer interval?Ohio Revised Code 4104.11(A)
The owner discovers a defect affecting the safety of a boiler. What does R.C. 4104.16 require?Ohio Revised Code 4104.16
What does R.C. 4104.14 say about the safety valve?Ohio Revised Code 4104.14
Where must a stationary boiler's certificate of operation be placed?Ohio Revised Code 4104.15(B)
Who formulates Ohio's rules for the construction, installation, repair and operation of boilers?Ohio Revised Code 4104.02(A)
Boiler design and construction 10
Above about what pressure are Scotch marine boilers generally not used?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
How does a dryback firetube boiler differ from a waterback design?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
How does a radiant superheater pick up its heat?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
How many Btu per hour is one boiler horsepower?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
In a firetube boiler, where do the combustion gases travel?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does a superheater do?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does the number of "passes" of a firetube boiler count?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What is the basic arrangement of a watertube boiler?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Which is the most common type of industrial firetube boiler?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Why are watertube boilers used where high steam pressures are needed?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Combustion: fuels and equipment 9
About how much efficiency does a combustion air preheater gain for each 40 degree Fahrenheit rise in combustion air temperature?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
To what does an economizer transfer the heat of the flue gases?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What do the dampers on a boiler outlet regulate?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does a burner flame safeguard system do when a hazardous condition develops?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What furnace pressure does an induced draft fan create?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What is "single point positioning" in a combustion control system?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Where does a forced draft fan sit, and what does it do?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Which fuel fired the largest share of industrial boiler units in the 2005 count the sourcebook cites?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
With a noncondensing economizer on a natural gas boiler, above what temperature should the exhaust gas typically be kept?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Boiler indicators and devices 6
What does a single-element water-level control sense?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does a triple-element level control add to the two-element system?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What is a nonreturn valve?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
When header pressure rises above the setting, what does the steam-pressure control adjust?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Which are the three basic types of steam flow meter?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Which valve does the sourcebook call the most important on the boiler?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Pumps and boiler auxiliary equipment 6
From where do feedwater pumps take the water they send to the boiler?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does a flash tank on the blowdown line let the plant recover?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What does bottom blowdown remove?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What is continuous blowdown for?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What is the highest operating temperature of an atmospheric deaerator?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Why is oxygen in the feedwater a problem for a boiler system?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
Steam turbines and associated equipment 6
How does a surface condenser condense the exhaust steam?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
To what conditions does a condensing turbine exhaust?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What are steam ejectors used for on a condensing turbine?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What do interstage take-offs on a turbine allow?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What kinds of machinery does the sourcebook say steam turbines drive?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
What marks a backpressure turbine?U.S. Department of Energy, Improving Steam System Performance: A Sourcebook for Industry, Section 1
This unofficial Ohio stationary engineer practice test asks 76 of our own questions on Chapter 4104 of the Revised Code, the operator rule and steam plant basics. It is not affiliated with the Ohio Department of Commerce.
Read the full guide
What the state's outline lists
The Department's candidate bulletin spreads the closed book stationary steam engineer examination over thirteen subject areas, from the steam cycle and boiler design to turbines and math formulas. Boiler design and math formulas carry the most, seven items each.
What this bank covers
Thirty-nine questions come from Ohio's own law: who needs which license, the examination and fees, attendance and inspections. The steam engineer outline lists no law area. Thirty-seven come from the U.S. Department of Energy's steam sourcebook: boilers, combustion, devices, auxiliaries and turbines.
What is left out
The bulletin's reference books are privately published and none was used, so the math formulas area and environmental control are not asked here.
Two numbers decide most license questions: above 15 psig is a power boiler, and over 360 square feet of heating surface needs a licensed operator.
The low pressure license does not reach a power boiler, and only the steam engineer license reaches engines above 30 horsepower.
The application goes in 30 to 60 days before the examination (R.C. 4104.19).
Questions and answers
Is there an Ohio boiler license practice test here?
Yes. The Ohio law topics apply to all three licenses: low pressure boiler operator, high pressure boiler operator and steam engineer. The boiler, combustion and device topics match subject areas the bulletin lists for the two high pressure examinations.
What does an Ohio boiler license test study guide need to cover?
By the bulletin, the low pressure examination has 30 questions on boiler devices, feed water, heating sources, steam distribution, draft, water treatment, operation, safety and Ohio laws and rules. The high pressure examination has 40, from the steam cycle to pumps and environmental control.
How many questions are on the Ohio stationary steam engineer exam?
Fifty, with 70% required to pass, by the candidate information bulletin linked from the Department of Commerce boiler page. All three examinations allow three hours. The bulletin, last revised July 1, 2011, adds that five to ten unscored pretest questions may be given.
Who can take the Ohio steam engineer exam?
R.C. 4104.19 asks for an applicant at least 18 with one year of experience operating steam engines, or a mix of experience and education the superintendent of industrial compliance accepts.
Are these questions from the real Ohio exam?
No. Each was written for this page from the Revised Code, the Administrative Code or a U.S. Department of Energy sourcebook. None comes from the state examination, and the Ohio Department of Commerce did not review this page.