api api-936 practice test

Exam Title: Refractory Personnel

Last update: Nov 27 ,2025
Question 1

[Inspection and Testing Requirements]
Which of the following is the appropriate term for testing refractory that was sampled during project
site installation in order to confirm that it meets specified physical property standards?

  • A. Hammer testing
  • B. Pre-qualification testing
  • C. As-installed testing
  • D. Visual testing
Answer:

C

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Question 2

[Material Requirements]
The quantity of manufactured refractory that has the same formulation as that prepared in an
uninterrupted manufacturing operation is called a:

  • A. pallet
  • B. test sample
  • C. production run
  • D. bag
Answer:

C

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Question 3

[Inspection and Testing Requirements]
Which of the following is a quality control element?
(This may have more than one correct answer; please select all answers that apply.)

  • A. As-installed testing
  • B. Initial Inspection
  • C. Installation monitoring
  • D. Report writing
Answer:

A,B,C

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Question 4

[Installation Procedures]
If the refractory lining is required before pressure testing, all pressure-retaining welds shall:

  • A. be lined with coal tar epoxy.
  • B. include additional anchors.
  • C. remain unlined and exposed to test medium.
  • D. be gunned with no needles.
Answer:

C

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Question 5

[Material Requirements]
When water is used for refractory installed on a carbon steel surface with a stainless steel anchorage,
the chloride content of the potable water shall not exceed:

  • A. 50 ppm
  • B. 100 ppm
  • C. 200 ppm
  • D. 250 ppm
Answer:

A

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Question 6

[Inspection and Testing Requirements]
When performing the ASTM C704 and ASTM C133 refractory tests, the specimen should be fired to
what temperature?

  • A. 815°F (435°C)
  • B. 1000°F (540°C)
  • C. 1500°F (815°C)
  • D. 2730°F (1500°C)
Answer:

C

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Question 7

[Material Requirements]
For non-erosive service, what is the required number of test specimens per sample for cold crushing
strength?

  • A. 1
  • B. 2
  • C. 3
  • D. 4
Answer:

B

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Question 8

[Documentation and Records]
Who is responsible for the accuracy of installation records?

  • A. refractory manufacturer
  • B. owner
  • C. contractor
  • D. inspector
Answer:

C

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Question 9

[Acceptance Criteria]
Maximum allowable crack length, visible on the surface of a dense firebrick, is:

  • A. 1/4 in. (6 mm)
  • B. 3/8 in. (10 mm)
  • C. 1/2 in.(12 mm)
  • D. 3/4 in. (19 mm)
Answer:

C

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Question 10

[Inspection and Testing Requirements]
Which party provides the quality requirements for hammer testing, extent of cracking, and surface
voids?

  • A. The owner
  • B. The contractor
  • C. The refractory manufacturer
  • D. The inspector
Answer:

A

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