Online Access Free API-936 Practice Test

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

Correct Answer:

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.

Which of the following statements regarding curing of hydraulic bonded castables is true?

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

Before refractory installations, all surfaces to be lined shall be cleaned to meet:

• A.SSPC-SP 10
• B.ASTM C-113
• C.SSPC-SP 7/NACE 4
• D.API 510

The maximum angle permitted for gunning below the horizontal is:

• A.45°.
• B.15°.
• C.60°.
• D.30°.

The mock-up for vibration cast installations demonstrates the adequacy of the: (This may have more than one correct answer; please select all that apply.)

• A.vibration method.
• B.equipment.
• C.craftsman's ability to construct the forms.
• D.means of vibrator attachment.