API-936 問題練習

Question No : 1
Refractory abrasion is defined as the wearing away of the surface by:

• A.high-velocity gases.
• B.the scouring action of moving solids.
• C.coke buildup.
• D.high-velocity hydrocarbons.

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Question No : 2
Newly applied cast linings must cure before stripping the forms per the:

• A.manufacturer's recommendations.
• B.owner's recommendations.
• C.MSD
• D.inspector's recommendations.

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Question No : 3
What temperature is required to form a permanent bond in phosphate-bonded plastic refractory?

• A.100°F to 300°F (38°C and 150°C)
• B.50°F to 100°F (10°C and 38°C)
• C.300°F to 500°F (150°C and 260°C)
• D.500°F to 700°F (260°C and 370°C)

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Question No : 4
The physical attributes testing of manufactured bricks during pre-shipment testing shall require a minimum Acceptable Quality Limit (AQL) of:

• A.1%
• B.4%
• C.5%
• D.10%

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Question No : 5
Which term is used to describe a newly installed monolithic refractory lining that has not been exposed to either a dry-out or initial heating?

• A.Castable refractory
• B.Green refractory
• C.Wet refractory
• D.Installed refractory

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Question No : 6
Initial heating of newly installed refractory linings shall be performed with:
(This may have more than one correct answer; please select all answers that apply.)

• A.electrical heating elements.
• B.open torches.
• C.portable burners.
• D.process heating devices.

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Question No : 7
What characteristic shall be required for form selection?

• A.Resist chemical attack
• B.Resist mechanical loads
• C.Self-supporting
• D.Transparent

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Question No : 8
For qualification testing, test panels for pneumatic gunning are inclined at a:

• A.30° angle above the horizontal.
• B.45° angle above the horizontal.
• C.60° angle above the horizontal.
• D.90° angle above the horizontal.

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Question No : 9
Sections of the lining below minimum thickness shall be:

• A.discussed with engineer.
• B.increased in thickness with a skim coat.
• C.roughed and gunned to full thickness.
• D.cut out entirely and replaced.

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Question No : 10
According to API 936, test specimens are required to be held at oven dry temperature for how many hours?

• A.1
• B.3
• C.5
• D.12

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Question No : 11
Which party provides the quality requirements for hammer testing, extent of cracking, and surface voids?

• A.The owner
• B.The contractor
• C.The refractory manufacturer
• D.The inspector

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Question No : 12
Maximum allowable crack length, visible on the surface of a dense firebrick, is:

• A.1/4 in. (6 mm)
• B.3/8 in. (10 mm)
• C.1/2 in. (12 mm)
• D.3/4 in. (19 mm)

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Question No : 13
Who is responsible for the accuracy of installation records?

• A.refractory manufacturer
• B.owner
• C.contractor
• D.inspector

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Question No : 14
For non-erosive service, what is the required number of test specimens per sample for cold crushing strength?

• A.1
• B.2
• C.3
• D.4

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Question No : 15
When performing the ASTM C704 and ASTM C133 refractory tests, the specimen should be fired to what temperature?

• A.815°F (435°C)
• B.1000°F (540°C)
• C.1500°F (815°C)
• D.2730°F (1500°C)

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