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API API-936 Exam Questions
Refractory Personnel (Page 2 )

Updated On: 27-Feb-2026
Page 2 of 18
PDF with 85 Questions

[Material Requirements]
Which of the following is false per the requirements of API Standard 936?

  1. Cold crush strength is determined using two 4-1/2 in. (144 mm) × 4-1/2 in. (114 mm) × 4-1/2 in.
    (114 mm) cubes.
  2. Density shall be determined using cubes or erosion plates and linear change bars.
  3. Abrasion resistance is determined using two 4-1/2 in. (114 mm) × 4-1/2 in. (144 mm) × 1 in. (25 mm) specimens.
  4. Permanent linear change is determined with one 2 in. (50 mm) × 2 in. (50 mm) × 9 in. (230 mm) specimen.

Answer(s): A



[Installation Procedures]
The mock-up for vibration cast installations demonstrates the adequacy of the: (This may have more than one correct answer; please select all that apply.)

  1. craftsman's ability to construct the forms.
  2. equipment.
  3. means of vibrator attachment.
  4. vibration method.

Answer(s): B,C,D



[Terms, Definitions, and Abbreviations]
Materials that are easily reduced to a granular or powdery condition after placement are known as:

  1. friable materials.
  2. calcined frits.
  3. mineral additives.
  4. granular grog.

Answer(s): A



[Responsibilities and Qualifications]
Conflicts in documents and/or drawings shall be resolved by the:

  1. inspector.
  2. owner.
  3. engineering company.
  4. inspector with 30 years of service/experience.

Answer(s): B



[Terms, Definitions, and Abbreviations]
The vessel in which the cracking reaction occurs or is completed, and in which the product gases are separated from coke and/or catalyst particulate, is the:

  1. stripper.
  2. reactor.
  3. regenerator.
  4. stand pipe.

Answer(s): B






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