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Examen

Boilermaker NCCR Test (Latest) 3

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Pages
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Grade
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Publié le
10-03-2025
Écrit en
2024/2025

Boilermaker NCCR Test (Latest) 3

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Boilermaker Nccr
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Publié le
10 mars 2025
Nombre de pages
28
Écrit en
2024/2025
Type
Examen
Contient
Questions et réponses

Sujets

Aperçu du contenu

1. Which of the following describes the correct procedure for
handling a gas leak in a boiler room?
A. Ignore it, as gas leaks are common and usually not dangerous
B. Ventilate the area immediately and evacu.


2. Which of the following describes the correct procedure for
handling a gas leak in a boiler room?
A. Ignore it, as gas leaks are common and usually not dangerous
B. Ventilate the area immediately and evacuate the premises
C. Shut down the boiler and wait for the leak to stop
D. Turn off the lights and electrical equipment to prevent a spark
Answer: B) Ventilate the area immediately and evacuate the
premises
Rationale: In the event of a gas leak, it is critical to ventilate the
area immediately to disperse the gas and prevent any potential
explosion. Workers should evacuate to safety, and emergency
protocols should be followed.


3. What does ASME stand for, and why is it important in
boilermaking?
A. American Society for Mechanical Engineering

,B. American Society of Mechanical Engineers
C. Association of Steel Materials Experts
D. American Society of Material Engineers
Answer: B) American Society of Mechanical Engineers
Rationale: ASME is a key organization that sets codes and
standards for the design, manufacturing, and maintenance of
boilers, pressure vessels, and other mechanical systems, ensuring
safety and quality.


4. Which of the following is a common hazard associated with
working as a boilermaker?
A. Exposure to toxic fumes
B. Electrocution
C. Hearing loss from loud machinery
D. All of the above
Answer: D) All of the above
Rationale: Boilermakers face multiple hazards, including exposure
to toxic fumes from welding, electrical hazards, and hearing loss
due to loud equipment.


5. What is the function of a boiler economizer?
A. To heat water before it enters the boiler
B. To remove scale from the boiler system

, C. To regulate boiler pressure
D. To preheat the air entering the combustion chamber
Answer: A) To heat water before it enters the boiler
Rationale: The boiler economizer uses waste heat from the flue
gases to preheat the feedwater entering the boiler, improving
efficiency and reducing fuel consumption.


6. In boilermaking, which of the following would most likely cause
a "thermal shock" to a boiler?
A. Sudden cooling of a hot boiler
B. Slow, gradual heating of the boiler
C. Consistent temperature regulation
D. Gradual loss of pressure in the system
Answer: A) Sudden cooling of a hot boiler
Rationale: Thermal shock occurs when a boiler is cooled too
quickly, causing stress and potential cracking due to the rapid
change in temperature.


7. In boilermaking, what is the primary concern when welding
carbon steel?
A. Maintaining the correct electrode angle
B. Preventing the formation of cracks due to thermal stress
C. Ensuring a smooth weld bead appearance
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