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4B practice exam › Unit B-5

4B B-5: Energy Plant Maintenance

62 practice questions in this unit. Each practice set pulls 20 at a time, so you keep seeing new questions as you go.

What this unit covers: Hand tools, fasteners, rigging and working at height, boiler service, prep for inspection and cleaning.

Exam theme: Maintenance and water treatment. Commonly reported share of the 100-question 4B exam: about 10 questions (unofficial; SOPEEC and ABSA do not publish per-unit counts). See the 4B exam breakdown.

2 free 4B B-5 questions, explained

Original exam-style questions written to the public syllabus, from our free public sample. They are not questions from a real exam.

1. When a new blade is installed in a hand hacksaw, how should the teeth be oriented and what should be done to the blade before the saw is stored?

  • A. Teeth point toward the handle, and the blade tension is released before storage
  • B. Teeth point away from the handle, and the blade tension is released before storage
  • C. Teeth point toward the handle, and full tension is kept on the blade during storage
  • D. Teeth point away from the handle, and full tension is kept on the blade during storage
Show the answer and explanation

Answer: B. A new blade is fitted with the teeth pointing away from the handle and tensioned with the wing nut so it cuts straight; the tension must be released when the hacksaw is stored to protect the blade and frame.

Question ID KE-B05-C01-Q001 · Unit B-5: Energy Plant Maintenance · Report an error

2. Which of the following would an inspector examine during the internal inspection of a boiler?

  • A. The accuracy of the boiler's pressure gauge
  • B. The set point and lift capacity of the safety valve
  • C. The flue gas temperature leaving the unit
  • D. The waterside metal for corrosion, pitting, and cracks
Show the answer and explanation

Answer: D. The internal inspection examines the waterside and fireside metal for corrosion, pitting, and cracking. Gauge accuracy, flue gas temperature, and safety valve set point are checked during the external inspection conducted while the boiler is in service.

Why the other options are not the answer

  • A. Pressure gauge accuracy is checked during the external inspection while the boiler is in service.
  • B. Safety valve set point and capacity are checked during the external inspection.
  • C. Flue gas temperature is an operating reading checked with the boiler in service, not during an internal inspection.

Question ID KE-B05-C04-Q023 · Unit B-5: Energy Plant Maintenance · Report an error

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← B-4: Boiler Plant Operation and Management · B-6: Water Treatment →

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