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Louisiana (New Orleans) Second Class Stationary Boilers 661-
LA 661 EXAM QUESTIONS AND CORRECT VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR – JUST RELEASED
Louisiana (New Orleans) Second Class Stationary Boilers 661-LA 661 Exam
10-LINE EXAM COVERAGE IN POINTS
1. Exam Authority: Administered by the New Orleans Board of Examiners of Steam
Boilers under Louisiana Revised Statutes §33:4814; license must be posted
conspicuously in the engine room and renewed annually
2. Boiler Types (ASME Section I): Fire-tube (HRT, Scotch Marine, Vertical - hot gases
through tubes), Water-tube (Bent-tube D-type/A-type, Straight-tube - water through
tubes); components include steam drum, mud drum, tube sheets, stay-bolts, furnace,
superheaters, economizers
3. Thermodynamics: First Law (energy conservation), Latent heat of vaporization (phase
change at 100°C), Sensible heat (temperature change); heat transfer mechanisms:
Radiation (furnace), Convection (hot gases), Conduction (metal)
4. Combustion & Draft: The 3 T's (Time, Temperature, Turbulence); Draft types: Natural,
Forced (FD fan), Induced (ID fan), Balanced; No. 6 oil requires heating for viscosity
control and atomization
5. Safety Devices: Safety valves (set at MAWP; ASME code permits opening at 6% above
MAWP), Low Water Cutoffs (primary/secondary), Gauge glass (blowdown daily to verify
accuracy), Pressure gauges (pigtail siphon protects Bourdon tube)
6. Water Treatment: Scale control (hardness removal via softening or phosphates),
Corrosion control (oxygen scavengers like Sodium Sulfite; pH control with Caustic Soda),
Blowdown (bottom removes sludge, surface/continuous controls TDS), Deaeration
(removes dissolved O2 and CO2)
7. Pumps & Valves: Centrifugal pumps (most common for high-pressure feedwater), Check
valves (prevent backflow), Quick-opening valve (installed upstream of slow-opening
valve in blowdown system), Reciprocating pump hammering indicates loss of suction
prime or flashing
8. Operation Procedures: Start-up (check water level first; warm up slowly), Shutdown
(secure fuel first; allow cooling before draining), Cut-in (connecting boiler to common
steam header), Hydrostatic test (1.5 x MAWP), ASME stamp must remain visible
9. Regulatory Requirements: LA R.S. §33:4814 (Board authority; license required for cities
>50k population), LAC 55:V-5006 (boilers must comply with ASME Code and be
registered with National Board), Licensed engineer must be present whenever boiler is
operating
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10. Duty Status & Compliance: License must be conspicuously posted; annual renewal;
Office of State Fire Marshal issues boiler licenses; Welcome Home Act streamlines
licensure for relocating professionals
50+ MCQ QUESTIONS WITH RATIONALE
Question 1:
Which governing body administers the 661-LA Second Class Stationary Boiler Operator
Certification in New Orleans?
A) Louisiana Department of Environmental Quality
B) City of New Orleans Board of Examiners of Steam Boilers
C) ASME International
D) National Board of Boiler and Pressure Vessel Inspectors
Correct Answer: B
Rationale: The New Orleans Board of Examiners of Steam Boilers administers the 661-LA exam
pursuant to Louisiana Revised Statutes §33:4814. The Board is responsible for testing and
certifying stationary boiler operators in the city .
Question 2:
Where must a Second Class Stationary Boiler Operator certificate be posted after it is issued?
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A) At the operator's home address
B) Conspicuously in the engine room where the boilers are operated
C) At the company's main office
D) On the boiler itself
Correct Answer: B
Rationale: Louisiana law requires that the certificate be posted conspicuously in the engine
room where the boilers are operated. This ensures that the certificate is readily available for
inspection by regulatory authorities .
Question 3:
How often must a Second Class Stationary Boiler Operator certificate be renewed in New
Orleans?
A) Every 2 years
B) Annually
C) Every 3 years
D) Every 5 years
Correct Answer: B
Rationale: The Second Class Stationary Boiler Operator certificate must be renewed annually
under City of New Orleans requirements .
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Question 4:
Which law states that energy cannot be created or destroyed, only transformed?
A) First Law of Thermodynamics
B) Second Law of Thermodynamics
C) Zeroth Law of Thermodynamics
D) Law of Conservation of Mass
Correct Answer: A
Rationale: The First Law of Thermodynamics is the principle of energy conservation, indicating
that energy can change forms but the total amount remains constant. This is fundamental to
boiler operation and steam generation .
Question 5:
In a boiler, the heat required to change water at 100°C to steam at the same temperature is
called:
A) Sensible heat
B) Latent heat of vaporization
C) Specific heat
D) Superheat
Louisiana (New Orleans) Second Class Stationary Boilers 661-
LA 661 EXAM QUESTIONS AND CORRECT VERIFIED SOLUTIONS
LATEST UPDATE THIS YEAR – JUST RELEASED
Louisiana (New Orleans) Second Class Stationary Boilers 661-LA 661 Exam
10-LINE EXAM COVERAGE IN POINTS
1. Exam Authority: Administered by the New Orleans Board of Examiners of Steam
Boilers under Louisiana Revised Statutes §33:4814; license must be posted
conspicuously in the engine room and renewed annually
2. Boiler Types (ASME Section I): Fire-tube (HRT, Scotch Marine, Vertical - hot gases
through tubes), Water-tube (Bent-tube D-type/A-type, Straight-tube - water through
tubes); components include steam drum, mud drum, tube sheets, stay-bolts, furnace,
superheaters, economizers
3. Thermodynamics: First Law (energy conservation), Latent heat of vaporization (phase
change at 100°C), Sensible heat (temperature change); heat transfer mechanisms:
Radiation (furnace), Convection (hot gases), Conduction (metal)
4. Combustion & Draft: The 3 T's (Time, Temperature, Turbulence); Draft types: Natural,
Forced (FD fan), Induced (ID fan), Balanced; No. 6 oil requires heating for viscosity
control and atomization
5. Safety Devices: Safety valves (set at MAWP; ASME code permits opening at 6% above
MAWP), Low Water Cutoffs (primary/secondary), Gauge glass (blowdown daily to verify
accuracy), Pressure gauges (pigtail siphon protects Bourdon tube)
6. Water Treatment: Scale control (hardness removal via softening or phosphates),
Corrosion control (oxygen scavengers like Sodium Sulfite; pH control with Caustic Soda),
Blowdown (bottom removes sludge, surface/continuous controls TDS), Deaeration
(removes dissolved O2 and CO2)
7. Pumps & Valves: Centrifugal pumps (most common for high-pressure feedwater), Check
valves (prevent backflow), Quick-opening valve (installed upstream of slow-opening
valve in blowdown system), Reciprocating pump hammering indicates loss of suction
prime or flashing
8. Operation Procedures: Start-up (check water level first; warm up slowly), Shutdown
(secure fuel first; allow cooling before draining), Cut-in (connecting boiler to common
steam header), Hydrostatic test (1.5 x MAWP), ASME stamp must remain visible
9. Regulatory Requirements: LA R.S. §33:4814 (Board authority; license required for cities
>50k population), LAC 55:V-5006 (boilers must comply with ASME Code and be
registered with National Board), Licensed engineer must be present whenever boiler is
operating
, Page 2 of 128
10. Duty Status & Compliance: License must be conspicuously posted; annual renewal;
Office of State Fire Marshal issues boiler licenses; Welcome Home Act streamlines
licensure for relocating professionals
50+ MCQ QUESTIONS WITH RATIONALE
Question 1:
Which governing body administers the 661-LA Second Class Stationary Boiler Operator
Certification in New Orleans?
A) Louisiana Department of Environmental Quality
B) City of New Orleans Board of Examiners of Steam Boilers
C) ASME International
D) National Board of Boiler and Pressure Vessel Inspectors
Correct Answer: B
Rationale: The New Orleans Board of Examiners of Steam Boilers administers the 661-LA exam
pursuant to Louisiana Revised Statutes §33:4814. The Board is responsible for testing and
certifying stationary boiler operators in the city .
Question 2:
Where must a Second Class Stationary Boiler Operator certificate be posted after it is issued?
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A) At the operator's home address
B) Conspicuously in the engine room where the boilers are operated
C) At the company's main office
D) On the boiler itself
Correct Answer: B
Rationale: Louisiana law requires that the certificate be posted conspicuously in the engine
room where the boilers are operated. This ensures that the certificate is readily available for
inspection by regulatory authorities .
Question 3:
How often must a Second Class Stationary Boiler Operator certificate be renewed in New
Orleans?
A) Every 2 years
B) Annually
C) Every 3 years
D) Every 5 years
Correct Answer: B
Rationale: The Second Class Stationary Boiler Operator certificate must be renewed annually
under City of New Orleans requirements .
, Page 4 of 128
Question 4:
Which law states that energy cannot be created or destroyed, only transformed?
A) First Law of Thermodynamics
B) Second Law of Thermodynamics
C) Zeroth Law of Thermodynamics
D) Law of Conservation of Mass
Correct Answer: A
Rationale: The First Law of Thermodynamics is the principle of energy conservation, indicating
that energy can change forms but the total amount remains constant. This is fundamental to
boiler operation and steam generation .
Question 5:
In a boiler, the heat required to change water at 100°C to steam at the same temperature is
called:
A) Sensible heat
B) Latent heat of vaporization
C) Specific heat
D) Superheat
