Updated API 936 Individual Certification Programs 2023: A Comprehensive Guide to Practice Test PDF Dumps Questions & Answers
                      
  
 
 
 API
  
API-936
 Refractory Personnel
 
 
 
 
 
 
 
 
 
 
Questions And Answers PDF Format:  
 
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Question: 1 
   
A cylindrical mechanical shaft driven device immersed into cast refractory to assist in consolidation, de-
airing, and promotion of flow by vibration. 
 
A. submersion vibrator 
B. prewetting (gunning) 
C. inspector 
D. ceramics 
 
Answer: A     
 
Question: 2 
   
(1) A high-alumina mineral, usually consisting of rounded concretionary grains embedded in clay-like 
mass, and believed to consist essentially of alumina trihydrate (Al2O3-3H2O) and alumina hydrate 
(Al2O3-H2O), in varing proportions. (2) Commericailly, bauxite must contain at least 65% alumina on a 
calcined basis. 
 
A. hematite 
B. alumina 
C. bauxite 
D. clay 
 
Answer: C     
 
Question: 3 
   
The process of heating refractories to develop desired properties. 
 
A. firing 
B. sintering 
C. welding 
D. casting 
 
Answer: A     
 
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Question: 4 
   
A metallic anchoring system constructed of metal strips joined together to form hexagonal shaped 
enclosures where erosion-resistant refractory is packed after welding to the base plate. Thickness is 
usually 3/4" or 1". 
 
A. grout 
B. hexalt anchors 
C. cement 
D. hexmetal 
 
Answer: D     
 
Question: 5 
   
A combination of refractory grain and suitable bonding agent that, after the addition of a proper liquid, 
is installed into place to form a refractory shape or structure that becomes rigid because of a chemical 
reaction. 
 
A. steel 
B. cement 
C. castable 
D. casting 
 
Answer: C     
 
Question: 6 
   
Conversion of a refractory material either wholly or in part into fine powder or dust. This usually results 
from (a) chemical reactions such as hydration or (b) from mineral inversion accompanied by large and 
abrupt change in volume, such as the inversion of beta to gamma dicalcium silicate upon cooling. 
 
A. dusting 
B. fluffing 
C. anting 
D. scaling 
 
Answer: A     
 
Question: 7 
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The noncombustible residue that remains after burning a fuel or other combustible material. 
 
A. dusting 
B. density 
C. ash 
D. clay 
 
Answer: C     
 
Question: 8 
   
The temperature at which melting takes place. Most refractory materials have no definite melting points 
but soften gradually over a range of temperatures. 
 
A. boiling point 
B. melting point 
C. field mix 
D. fusion point 
 
Answer: D     
 
Question: 9 
   
A moldable refractory material that can be extruded and has a level of workability that permits it to be 
pounded into place to form a monolithic structure. 
 
A. ceramic bond 
B. alumina-silica refractories 
C. plastic refractory 
D. air-setting refractories 
 
Answer: C     
 
Question: 10 
   
Castable installation technique whereby refractory is placed by packing successive handfuls of material 
to the desired shape. Refractory is mixed at a consistency that is stiff enough for the placed refractory to 
hold its shape and is we and sticky enough so that the lining formed is structually homogenous. 
 
A. arch, flat 
B. vibration casting 
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C. hand packing 
D. single point 
 
Answer: C     
 
Question: 11 
   
The section of heat exchanger furnace downstream of the radiant section that is closely packed with 
tubes for optimum convective heat transfer. 
 
A. permanent linear change (plc) 
B. bend test (of anchors) 
C. other service 
D. convection section (of furnace) 
 
Answer: D     
 
Question: 12 
   
A thin refractory lining system with a metal shell temperature greater than 500°F (260°C) 
 
A. cold wall 
B. hot wall 
C. ceramic bond 
D. air-cooled 
 
Answer: A     
 
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