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NEW QUESTION # 19
Arrange for testing at either an independent laboratory or the manufacturer's plant is
- A. Contractor responsibility
- B. Inspector responsibility
- C. Owner responsibility
- D. Manufacturer responsibility
Answer: A
NEW QUESTION # 20
Testing frequency for material qualification of refractory for erosion service requires
- A. 1 sample per pallet or more from each production run
- B. None of the above
- C. 1 sample per pallet or less from each production run
- D. 2 samples per pallet or more from each production run
Answer: C
NEW QUESTION # 21
Refractory packing requirements, the weight in the bag, shall not deviate by more than
- A. ± 3%
- B. ± 4%
- C. ±1%
- D. ± 2%
Answer: D
NEW QUESTION # 22
Refractories that are resistant to chemical attack by both acid and basic slags, refractories, or fluxes at high temperature is
- A. None of the above
- B. Basic
- C. Neutral
- D. Acid
Answer: C
NEW QUESTION # 23
Test panels for pneumatic gunning are inclined above the horizontal at an angle of
- A. 30?
- B. None of the above
- C. 60?
- D. 45?
Answer: D
NEW QUESTION # 24
Refractory failure mechanisms are.
- A. All of the above
- B. Overheating and chemical attack
- C. Erosion and corrosion
- D. Thermal shock and mechanical abuse
Answer: A
NEW QUESTION # 25
Compositions of ground refractory materials develop a strong bond at air ambient temperatures by virtue of chemical reactions within the binder phase that is usually activated by water additions. These refractories include cement and phosphate bonded castables is called:
- A. None of the above
- B. Heat setting refractories
- C. Air and heat setting refractory
- D. Air setting refractories
Answer: D
NEW QUESTION # 26
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. kyanite
- B. fused alumina
- C. alusite
- D. bauxite
Answer: D
NEW QUESTION # 27
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. Thermal expansion
- B. None of the above
- C. Expansion joint
- D. Thermal conductivity
Answer: C
NEW QUESTION # 28
Refractory lined pipe used for the transport of hot particulate medium and gases between process vessels is called
- A. Standpipe of FCCU
- B. None of the above
- C. Transfer line of FCCU
- D. Fractionator of FCCU
Answer: C
NEW QUESTION # 29
The most commonly used binder for refractory concrete is
- A. cements
- B. silicates
- C. calcium aluminate cement
- D. all of the above
Answer: C
NEW QUESTION # 30
The application of monolithic refractories by means of air placement guns is
- A. Casting
- B. Gunning
- C. Placing
- D. Pouring
Answer: B
NEW QUESTION # 31
Blanket, Module, Bulk paper, rope, and vacuum formed shaped are:
- A. Refractory fibers
- B. Shaped refractory
- C. Unshaped refractory
- D. All of the above
Answer: A
NEW QUESTION # 32
Additives used to facilitate moisture removal of refractory linings during dry out are called
- A. None of the above
- B. Mineral fiber
- C. Organic fiber
- D. Metal fiber
Answer: C
NEW QUESTION # 33
The property of matter by virtue of which heat energy is transmitted through particles in contact.
- A. Thermal expansion
- B. None of the above
- C. Thermal shock
- D. Thermal conductivity
Answer: D
NEW QUESTION # 34
Testing frequency for material qualification of refractory for other services requires
- A. None of the above
- B. 1 sample per 3 pallets or more from each production run
- C. 1 sample per pallet or less from each production run
- D. 1 sample per 3 pallets or less from each production run
Answer: D
NEW QUESTION # 35
Cristobalite is an important constituent of
- A. Silica brick
- B. Alumina bricks
- C. Magnesia brick
- D. Insulating brick
Answer: A
NEW QUESTION # 36
The air pressure to blast the 1000 g of size graded silicon carbide grain for abrasion resistance test should be
- A. 448 KPa (65 PSi)
- B. None of the above
- C. 450 KPa
- D. 400 KPa
Answer: A
NEW QUESTION # 37
Which function of refractories is to resist temperature?
- A. None of the above
- B. Tertiary function
- C. Primary function
- D. Secondary function
Answer: C
NEW QUESTION # 38
Spalling of layers from the hot surface of a refractory lining is called
- A. Spalling
- B. Erosion
- C. Sheeting
- D. Crumbling
Answer: A
NEW QUESTION # 39
Section of transfer line in which flow is in a downward direction is called
- A. None of the above
- B. Standpipe of FCCU
- C. Transfer line of FCCU
- D. Riser of FCCU
Answer: B
NEW QUESTION # 40
The welding method utilizing an arc-welding machine in conjunction with a timer and a gun is called
- A. None of the above
- B. V-anchor
- C. Stud weld
- D. Footed anchor
Answer: C
NEW QUESTION # 41
The vessel downstream of the reactor used to separate different product fractions is called
- A. Standpipe of FCCU
- B. None of the above
- C. Transfer line of FCCU
- D. Fractionator of FCCU
Answer: D
NEW QUESTION # 42
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