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NEW QUESTION 54
Brick, tile, fired shapes and fused cast shapes are
- A. refractory fiber
- B. unshaped refractory
- C. all above
- D. shaped refractory
Answer: D
NEW QUESTION 55
In ceramics, the property of resistance to melting, softening, or deformation at high temperature is called.
- A. None of the above
- B. Refractoriness
- C. Pyrometric cone equivalent
- D. Cold crushing strength
Answer: B
NEW QUESTION 56
Section of transfer line in which flow is in a downward direction is called
- A. Riser of FCCU
- B. None of the above
- C. Standpipe of FCCU
- D. Transfer line of FCCU
Answer: C
NEW QUESTION 57
API 936 documentation should content
- A. Design details
- B. Execution details
- C. Quality standards
- D. All above
Answer: D
NEW QUESTION 58
For modules of rupture test of brick and shapes, the preferred test specimen shall be standard
- A. 228 x 114 x 64 or 76mm
- B. 150 x 114 x 76mm
- C. None of the above
- D. 200 x 150 x 76mm
Answer: A
NEW QUESTION 59
Compositions of ground refractory materials which require relatively high temperatures for the development of an adequate bond (commonly called the ceramic bond) is called
- A. air and heat setting refractories
- B. air setting refractories
- C. none of the above
- D. heat setting refractories
Answer: D
NEW QUESTION 60
Refractory cast into a mock-up may be stripped and visually inspected after a minimum curing of
- A. 8 hrs
- B. 24 hrs
- C. 16 hrs
- D. 12 hrs
Answer: D
NEW QUESTION 61
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. Ramming mix
- B. Monolithic refractory
- C. None of the above
- D. Plastic refractory
Answer: D
NEW QUESTION 62
A high alumina mineral usually consists of rounded concretionary grains embedded in clay-like mass and is believed to consist essentially of alumina trihydrate (Al2O3 H2O) and alumina hydrate (Al2O3 H2O) in varying proportions is called
- A. fused alumina
- B. bauxite
- C. kyanite
- D. alusite
Answer: B
NEW QUESTION 63
The standard test method for abrasion resistance of refractory materials at room temperature is
- A. None of the above
- B. C 133 - 97
- C. C 704 - 01
- D. C 181 - 91
Answer: C
NEW QUESTION 64
Enclosure inside the top head of a reactor or regenerator vessel which supports the cyclones and in which gases exiting the cyclone outlets are collected is called
- A. Riser of FCCU
- B. None of the above
- C. Cyclone of FCCU
- D. Plenum of FCCU
Answer: D
NEW QUESTION 65
The surface of a refractory section not exposed to the source of heat
- A. Smooth face
- B. None of the above
- C. Cold face
- D. Hot face
Answer: C
NEW QUESTION 66
All the samples for the CCs test must be dried at 220 to 230?C (105 to 110?C) for
- A. 24 hrs (overnight)
- B. 12 hrs (overnight)
- C. 18 hrs (overnight)
- D. 20 hrs (overnight)
Answer: A
NEW QUESTION 67
Arrange for testing at either an independent laboratory or the manufacturer's plant is
- A. Contractor responsibility
- B. Owner responsibility
- C. Inspector responsibility
- D. Manufacturer responsibility
Answer: A
NEW QUESTION 68
The exposure of a material or body to a rapid change in temperature which may have a deleterious effect
- A. None of the above
- B. Thermal conductivity
- C. Thermal shock
- D. Thermal expansion
Answer: C
NEW QUESTION 69
Test panels for pneumatic gunning are inclined above the horizontal at an angle of
- A. None of the above
- B. 30?
- C. 45?
- D. 60?
Answer: C
NEW QUESTION 70
In API RP 936, the referenced ASTM standard procedure for cold crushing strength and modulus of rupture is
- A. C 133 - 97
- B. None of the above
- C. C704 - 01
- D. C181 - 91
Answer: A
NEW QUESTION 71
Spalling of layers from the hot surface of a refractory lining is called
- A. Sheeting
- B. Crumbling
- C. Erosion
- D. Spalling
Answer: D
NEW QUESTION 72
Fiber concentrations typically range is
- A. 1 - 2 wt percent
- B. Any of the above
- C. 1 - 4 wt percent
- D. 1 - 3 wt percent
Answer: C
NEW QUESTION 73
The vessel in which coke and residual hydrocarbons are burned off the catalyst and the flue gas is then separated from the catalyst is called
- A. None of the above
- B. Regenerator of FCCU
- C. Cyclones of FCCU
- D. Reactor of FCCU
Answer: B
NEW QUESTION 74
The air pressure to blast the 1000 g of size graded silicon carbide grain for abrasion resistance test should be
- A. None of the above
- B. 400 KPa
- C. 448 KPa (65 PSi)
- D. 450 KPa
Answer: C
NEW QUESTION 75
A separation between adjoining parts of a refractory lining that allows small expansive movements, such as those caused by thermal change is known as
- A. None of the above
- B. Thermal conductivity
- C. Thermal expansion
- D. Expansion joint
Answer: D
NEW QUESTION 76
Materials having refractory properties which form a refractory body when bonded into a conglomerate mass by a matrix is called
- A. None of the above
- B. Refractory mass
- C. Cementitious concrete
- D. Refractory aggregate
Answer: D
NEW QUESTION 77
The color of stripe for 304L alloy material of metallic anchor is
- A. None of the above
- B. 1 solid grey
- C. 2 solid black
- D. 1 solid black
Answer: C
NEW QUESTION 78
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