On the path to obtaining API 936 certification, you need to have careful preparation. One of the crucial strategies aside from being well-versed in the API 936 standard is exploring API 936 Sample Questions. In this detailed guide, we unravel the complexities of API 936 sample questions, offering valuable insights and expert advice to enhance your chances of success.

What Is API 936?

The API 936 standard, published by the American Petroleum Institute (API), outlines the requirements for obtaining and maintaining certification as an API 936 Refractory Inspector. This standard focuses on individuals involved in the installation, inspection, testing, and maintenance of refractory linings in various industries, including petrochemical, refining, and other processing facilities.

API 936 sets the criteria for evaluating the competence of personnel engaged in these activities, ensuring they possess the necessary knowledge and skills to maintain the integrity and reliability of refractory linings in high-temperature equipment.

For qualified API 936 Inspector, API provides an individual certification program. This certification serves as a validation of proficiency in specific areas such as equipment inspection, adherence to safety standards, and ensuring the integrity of crucial components within the industry.

What is The Structure of the API 936 Exam?

Details API 936 Exam
Duration 3 hours 15 minutes
Total Questions 85 Questions
Question Details 75 questions are scored

10 questions are pretest

Question Type 85 questions are multiple-choice and closed book
Passing Score 70%


How Are Some of the Sample Questions in the API 936 Exam?

1. What is the term for the property in ceramics that signifies resistance to melting, softening, or deformation at high temperatures?
a. Refractoriness
b. Pyrometric cone equivalent
c. Cold crushing strength
d. None of the above.
Answer: A

2. What is the proportion of Alumina–silicate aggregate size in a typical modern castable based on screen analysis?
a. 50 – 60%
b. 60 – 70%
c. 70 – 80%
d. None of the above
Answer: B

3. What term describes a combination of refractory grain and a suitable bonding agent that, after adding a proper liquid, is generally poured into place to form a refractory shape or structure, becoming rigid due to a chemical action?
a. Mortar
b. Castable
c. ceramic modules
d. all of the above
Answer: B

4. On a calcined basis, commercially, bauxite must contain at least
a. 65% fused silica
b. 60% alumina
c. 65% alumina
d. None of the above
Answer: C

5. In API RP 936, which ASTM standard procedure is referenced for cold crushing strength and modules of rupture?
a. C 133 – 97
b. C704 – 01
c. C181 – 91
d. None of the above
Answer: A

6. How many refractory shapes should be used to compose a sample for CCS test to ensure equivalence?
a. at least five
b. at least three
c. at least four
d. None of the above
Answer: A

7. In the modulus of rupture test for castable refractories, what are the dimensions of the test specimen?
a. 9 x 2 x 2 in (228 x 51 x 51mm)
b. 8 x 2 x 2 in
c. 6 x 2 x 2 in
d. None of the above
Answer: A

8. What does pre-turnaround planning entail?
a. at least 6 months prior to turnaround
b. at least 12 months prior to turnaround
c. at least 8 months prior to turnaround
d. any of the above
Answer: A

9. Regarding refractory packing requirements, the weight in the bag should not deviate by more than
a. ±1%
b. ± 2%
c. ± 3%
d. ± 4%
Answer: B

10. For the packing of chemical setting refractories, what should provide mechanical protection?
a. cardboard
b. rigid plastic
c. metal outside
d. any of the above
Answer: D

11. What is the term for additives employed to aid in the moisture removal of refractory linings during dry out?
a. metal fiber
b. organic fiber
c. mineral fiber
d. none of the above
Answer: B

12. What is the standard size of a fabricated test panel for pneumatic gunning qualification?
a. (500 mm x 500 mm)
b. (600 mm x 600 mm. 24 “ x 24”
c. (700 mm x 700 mm)
d. None of the above
Answer: B

13. What should API 936 documentation include?
a. Execution details
b. Design details
c. Quality standards
d. All above
Answer: D

14. What is the term for the vessel downstream of the reactor used to separate different product fractions?
a. stand pipe of FCCU
b. transfer line of FCCU
c. Fractionator of FCCU
d. None of the above
Answer: C

15. What is the term for the vessel in which coke and residual hydrocarbons are burned off the catalyst, and the flue gas is then separated from the catalyst?
a. Reactor of FCCU
b. Regenerator of FCCU
c. Cyclones of FCCU
d. None of the above
Answer: B

16. What is the designated color of the stripe for Inconel 600 alloy material of a metallic anchor?
a. 1 solid black
b. 2 solid black
c. 2 solid blue
d. None of the above
Answer: C

17. What are the most common sizes in thickness for hexmesh?
a. ¾ in or 1” (19mm or 25mm)
b. (20 – 25mm)
c. (10 – 20mm)
d. None of the above
Answer: A

18. What is the term for the welding method that utilizes an arc-welding machine in conjunction with a timer and a gun?
a. V-anchor
b. Footed anchor
c. Stud weld
d. None of the above
Answer: C

19. What are the refractory failure mechanisms?
a. erosion and corrosion
b. thermal shock and mechanical abuse
c. overheating and chemical attack
d. all of the above
Answer: D

20. What is the term for the increase in linear dimensions and volume that occurs when materials are heated and is counterbalanced by contraction of an equal amount when the materials are cooled?
a. thermal expansion
b. thermal conductivity
c. thermal shock
d. none of the above
Answer: A

In conclusion, gaining familiarity with API 936 practice exams should be one of your key strategies in preparing for the API 936 certification. These practice exams provide a valuable simulation of the actual certification test, allowing you to assess your readiness and identify areas for improvement.

By regularly engaging with practice questions, you not only become acquainted with the format and structure of the API 936 exam but also enhance your understanding of the content, ensuring a more confident and effective performance on the certification day.

PetroSync realizes how familiarity with the practice exams is a strategic tool, empowering you to navigate the specific challenges posed by API 936 and reinforcing your knowledge base for success in the demanding field of refractory personnel certification.

Enroll in our API 936 training as we equip you with mock-up exams assisted by a certified instructor. Our specialized training program is designed to provide comprehensive insights, covering the essential topics and exam requirements.

PetroSync’s API 936 training ensures you are thoroughly equipped with the knowledge and skills needed to excel in the certification process. By enrolling in this training, you not only enhance your understanding of refractory personnel practices but also significantly increase your chances of success in obtaining the API 936 certification.

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