Free API API-936 Practice Test & Real Exam Questions

Exam Code/Number: API-936
Exam Name/Title: Refractory Personnel
Certification Provider: API
Corresponding Certification: Individual Certification Programs

Exam Questions: 87
Updated On: Jun 29, 2026

Question #1

Which of the following is a correct condition for gunned material test panels used for CCS and PLC testing?

A. A vibrating screed must be used during panel finishing.

B. Test panels must be dried at 400°F (204°C) for 6 hours before specimen extraction.

C. Test panels must be 24 in. × 24 in. × 6 in. thick and shot vertically.

D. The minimum gunned thickness shall be 2 in., with a tolerance of ±0.25 in.

Discussion 0

Correct Answer: D Vote an answer

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Question #2

Which term is used to describe a newly installed monolithic refractory lining that has not been exposed to either a dry-out or initial heating?

A. Green refractory

B. Castable refractory

C. Wet refractory

D. Installed refractory

Discussion 0

Correct Answer: A Vote an answer

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Question #3

Which of the following is false per the requirements of API Standard 936?

A. Abrasion resistance is determined using two 4-1/2 in. (114 mm) × 4-1/2 in. (144 mm) × 1 in. (25 mm) specimens.

B. Density shall be determined using cubes or erosion plates and linear change bars.

C. Permanent linear change is determined with one 2 in. (50 mm) × 2 in. (50 mm) × 9 in. (230 mm) specimen.

D. 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.

Discussion 0

Correct Answer: D Vote an answer

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Question #4

What abrading media is required in the ASTM C-704 abrasion-resistant test?

A. Silicon nitride

B. Silicon carbide

C. Alumina grit

D. FCCU catalyst

Discussion 0

Correct Answer: B Vote an answer

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Question #5

Which of the following is a longitudinally hinged anchoring system for curved applications?

A. Hexmesh

B. Hexalt anchor

C. Curl

D. Flexmesh

Discussion 0

Correct Answer: D Vote an answer

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Question #6

Who is responsible for the accuracy of installation records?

A. contractor

B. inspector

C. owner

D. refractory manufacturer

Discussion 0

Correct Answer: A Vote an answer

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Question #7

A change in the length of a specimen measured before and after heating to a specific temperature is referred to as:

A. Modulus of rupture.

B. Modulus of elasticity.

C. Pyrometric cone equivalent.

D. Permanent linear change.

Discussion 0

Correct Answer: D Vote an answer

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Question #8

When is metal fiber reinforcement used in castable refractory?

A. Only when added in the field

B. Only when specified by the owner

C. Only when extra strength is required

D. For all monolithic hot face castable refractory materials

Discussion 0

Correct Answer: B Vote an answer

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Question #9

Which of the following is the inspector responsible for?

A. Hammer testing newly installed linings

B. Providing compliance data sheets

C. Testing water to be used

D. Qualification testing

Discussion 0

Correct Answer: A Vote an answer

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