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API API-936 Exam Questions
Refractory Personnel (Page 4 )

Updated On: 27-Feb-2026
Page 3 of 18
PDF with 85 Questions

[Material Requirements]
Each sample tested in accordance with ASTM C181 for workability index shall consist of how many specimens?

  1. 1
  2. 2
  3. 3
  4. 5

Answer(s): C



[Responsibilities and Qualifications]
Surface preparation and welding procedures are the responsibility of the:

  1. Owner.
  2. Contractor.
  3. Inspector.
  4. Manufacturer.

Answer(s): B



[Terms, Definitions, and Abbreviations]
Which of the following is the term for aggregate and/or cement that bounces away from a surface against which refractory is being projected by gunning?

  1. Slurry
  2. Trimmings
  3. Rebound
  4. Overspray

Answer(s): C



[Installation Procedures]
Who is responsible to approve refractory dryout procedures that have more than one heat source?

  1. Contractor
  2. Owner
  3. Manufacturer
  4. Inspector

Answer(s): B



[Installation Procedures]
During gunning, inclusion of rebound is minimized by which of the following techniques?

  1. Begin gunning at the lowest level and work around to full thickness in a spiral pattern
  2. Start at the lowest level elevation and build up gradually to full thickness in complete rings
  3. Start at the lowest level and build up gradually to full thickness in an area not more than 10 ft² (1 m²)
  4. Cover all areas up to 1/2-in (13 mm) thick stud tip thickness before building to full thickness

Answer(s): C






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