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API-936 (Refractory Personnel) Certification Exam is an industry-recognized certification that evaluates and certifies the knowledge and skills of professionals working in the refractory industry. Refractory materials are used in high-temperature environments such as furnaces, boilers, and reactors. They play a critical role in ensuring the safe and efficient operation of these systems. The API-936 Certification Exam assesses the knowledge and skills required to ensure that refractory materials are installed, inspected, and maintained in accordance with industry standards and best practices.

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API Refractory Personnel Sample Questions (Q56-Q61):

NEW QUESTION # 56
For erosion service, density results are determined from which of the following specimens?

A. Abrasion plates only
B. Abrasion plates and linear change bars
C. Crushing cubes only
D. Crushing cubes and linear change bars

Answer: B

Explanation:
For linings intended for erosive service, API 936 requires testing that includes specimens that experience real service wear simulation:
"For erosive service, bulk density shall be determined using the abrasion resistance test specimens and the linear change specimens."
- API Std 936, Section 6.4.3
Thus, both abrasion plates and linear change bars are used to evaluate density in erosion-sensitive applications.

NEW QUESTION # 57
The installation contractor is required to secure an advance agreement that concerns all the installation details from the:

A. Owner.
B. Engineering company.
C. Inspector.
D. Manufacturer.

Answer: A

Explanation:
According to API 936, theinstallation contractor must secure prior written approval or agreement from the ownerregarding all details of the installation. This includes procedures for curing, dryout, anchoring, repairs, and quality control. The owner or their authorized representative is the ultimate authority for project specification conformance.
Reference:
API Std 936, Section 4.1 - "The installation contractor shall obtain agreement from the owner for all installation procedures and requirements."

NEW QUESTION # 58
To compose a sample for the modulus of rupture test from an equivalent number of refractory shapes, the specimen should be

A. At least two
B. At least five
C. At least three
D. At least four

Answer: B

NEW QUESTION # 59
Cold wall refractory lined components shall be dried out by heating from:

A. the cold face only.
B. the hot face only.
C. the outside the steel shell.
D. inside an oven.

Answer: B

Explanation:
Cold wall refractory systems are typically backed by steel shells, which are poor at withstanding the thermal stresses that come from reverse heating. API 936 and API TR 980 clearly emphasize thatthe heat-up or dryout process for cold-wall linings must always begin from the hot face- that is, the process-exposed surface.
Heating from thehot faceallows for controlled migration of moisture toward the cold face and eventual venting to the atmosphere. Conversely, heating from the cold face or steel shell side traps moisture between the hot impermeable material and the outer surface, leading to:
Steam buildup
Explosive spalling
Cracks in the material or at the interface with the steel
For these reasons,only the hot facemethod is specified unless the design and dryout plan justify a different method under special engineering review.
Reference:
API Std 936, Section 6.5.2: "Dryout shall be performed from the hot face only unless otherwise specified." API TR 980, Section on "Dryout of Cold Wall Systems": Highlights the mechanisms of vapor movement and the risks of reverse heating.
ASTM C1190(Referenced Method): Supports the use of correct drying schedules and methods.

NEW QUESTION # 60
Materials that are easily reduced to a granular or powdery condition after placement are known as:

A. granular grog.
B. friable materials.
C. mineral additives.
D. calcined frits.

Answer: B

Explanation:
PerAPI Std 936, friable materials are defined as:
"Friable: A term applied to a material that is easily reduced to a powdery or granular state by crushing or rubbing."
-API Std 936, Section 3: Definitions
This is a key property considered in refractory evaluation because friability can indicate material weakness after installation.
Therefore:
A (friable materials)is the correct and technically defined term.
The other terms refer to distinct classes of materials not defined this way.

NEW QUESTION # 61
......

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Efficient Exam API-936 Preview & The Best Materials to help you pass API API-936

API-936 Braindumps Pdf - API-936 Certification Exam Cost

API Refractory Personnel Sample Questions (Q56-Q61):