UPDATED API API-936 EXAM QUESTIONS FOR API-936 EXAM SUCCESS

Updated API API-936 Exam Questions for API-936 Exam Success

Updated API API-936 Exam Questions for API-936 Exam Success

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Tags: New API-936 Test Answers, Valid API-936 Test Blueprint, New API-936 Dumps Book, Hot API-936 Spot Questions, API-936 Minimum Pass Score

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API-936 certification program is open to individuals with a minimum of five years of experience in refractory materials installation, inspection, or testing. Candidates must also have a high school diploma or equivalent qualification. Refractory Personnel certification program is designed to provide a benchmark for employers to evaluate the knowledge and skills of their employees in the field of refractory materials.

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Reliable New API-936 Test Answers - Pass API-936 Exam

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API Refractory Personnel Sample Questions (Q66-Q71):

NEW QUESTION # 66
For air-setting phosphate bonded, erosion-resistant refractories mixing, the mixer's paddles, and bowls shall be

  • A. Steel
  • B. None of the above
  • C. Aluminium
  • D. Carbon

Answer: A


NEW QUESTION # 67
Which of the following is false per the requirements of API Standard 936?

  • A. Abrasion resistance is determined using two 4-1/2 in. (114 mm) × 4-1/2 in. (144 mm) × 1 in. (25 mm) specimens.
  • B. Density shall be determined using cubes or erosion plates and linear change bars.
  • C. Permanent linear change is determined with one 2 in. (50 mm) × 2 in. (50 mm) × 9 in. (230 mm) specimen.
  • D. Cold crush strength is determined using two 4-1/2 in. (144 mm) × 4-1/2 in. (114 mm) × 4-1/2 in. (114 mm) cubes.

Answer: D

Explanation:
According to API Standard 936, the correct specimen dimensions for cold crush strength testing are:
"Test specimens for cold crushing strength shall be2 in. (50 mm) cubesamples prepared in accordance with ASTM C133."
-API Std 936, Section 6.4.2
This directly invalidates option A, which incorrectly states the specimen size as 4-1/2 inches.
For the other options:
Option B - Density determination:
API 936 states that density shall be measured using the same specimens used for linear change and abrasion resistance:
"Bulk density shall be determined using the same specimens prepared for the linear change and abrasion resistance tests."
-API Std 936, Section 6.4.3
"These specimens include cubes, linear change bars, and erosion plates."
-Appendix A, API Std 936
Option C - Abrasion resistance specimen size:
"Two 4-1/2 in. × 4-1/2 in. × 1 in. (114 mm × 114 mm × 25 mm) specimens shall be prepared for abrasion resistance testing."
-API Std 936, Section 6.4.4
Option D - Permanent linear change specimen size:
"Permanent linear change (PLC) is determined with a bar 2 in. × 2 in. × 9 in. (50 mm × 50 mm × 230 mm) cast in steel molds."
-API Std 936, Section 6.4.1
Therefore, Option A is the only false statement.


NEW QUESTION # 68
Which factors must be the same when retesting a sample that fails to meet specification?

Answer:

Explanation:

Explanation:
Pallet
Batch
Testing Procedure
Sample
When a sample fails to meet the required specifications in accordance with API Std 936, any retesting must maintain strict consistency with the original conditions to ensure validity and comparability of results.
API 936 states:
"If a sample fails to meet any requirement, resampling shall be permitted. However, retesting shall be performed using specimens from the same batch, pallet, and sample as the original test. The same testing procedure must be used."
- API Std 936, Section 6.2.3
Explanation of Matching Terms:
Pallet: To ensure material consistency.
Batch: Revalidates results without introducing variability from a new production lot.
Testing Procedure: Methodology must not change to avoid skewed comparison.
Sample: Must be the original sample to confirm initial findings.
Therefore, all of these factors must remain the same. The only item in your provided list that is not required to match is "Inspection methods" - it is not part of the retesting condition clause.


NEW QUESTION # 69
Which of the following statements regarding curing of hydraulic bonded castables is true?

  • A. After remaining in place for 24 hours, forms shall be removed and a curing compound applied within 1 hour of form removal
  • B. No part of the lining shall be allowed to air dry more than 3 hours before application of a curing compound
  • C. Apply a manufacturer approved membrane-type curing compound before the surface is dry to the touch
  • D. The membrane curing compound shall burn off at a temperature not less than 500°F (260°C)

Answer: B

Explanation:
Hydraulic bonded castables, such as those using calcium aluminate cement, cure through ahydration reactionthat requires the presence of water. Premature drying due to wind, sun, or heat can halt the hydration process, weaken the structure, and cause surface cracking. API 936 mandates thatno part of the exposed surface of the castable shall be allowed to dry more than 3 hoursbefore a membrane curing compound is applied.
This statement ensures:
Retention of sufficient surface moisture for ongoing hydration.
Prevention of microcracking, which can later act as stress risers during service.
Uniform strength development across the lining.
The curing compound forms a film that limits evaporation, allowing for continued hydration over the next 24-
48 hours.
Reference:
API Std 936, Section 6.3.2: "No portion of the exposed surface shall be allowed to dry more than 3 h prior to the application of the curing compound." ASTM C309(Referenced Standard): Specifies the performance requirements for curing compounds used in cement-based materials.


NEW QUESTION # 70
The test specimen of castable refractory for cold crushing strength shall be

  • A. 2 in. (51mm) cubes
  • B. Cylinders, 2 in. (51mm)in dia. by 2 in.(51 mm) height
  • C. none of the above
  • D. a or b

Answer: D


NEW QUESTION # 71
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