API 510 Closed Book Questions

Inspection for corrosion under insulation shall be considered for externally insulated carbon steel vessel operated between:

• 10 deg F(-12 deg C) and 350 deg F (177 deg C)

• 25 deg F (- 4 deg C) and 212 deg F (100 deg C)

• 32 deg F (0 deg C) and 212 deg F (100 deg C)

• 32 deg F (0 deg C) and 350 deg F (175 deg C)

If a vessel largest nozzle is a reinforced NPS 10 nozzle, then an alteration is adding an/a:

• Reinforced nozzle of any size less than NPS 10

• Nozzle that does not require reinforcement

• NPS 10 reinforced nozzle

• NPS 12 reinforced nozzle

When conducting internal inspection, the need for removing deposit or linings should be determined by:

• The inspector; in consultation with the vessel engineer

• The inspector; in consultation with corrosion engineer

• The inspector; with approval by owner/user

• The inspector; with approval by vessel engineer.

During a pressure test of a vessel less than 2 inch thick, the metal temperature should be maintained at minimum of how many degrees above the minimum design metal temperature?

• 10 deg F

• 20 deg F

• 30 deg F

• 50 deg F

A vessel has a single corrosion rate of 0.010 inch/year. The minimum vessel required thickness for both shell and heads is 0.750 inch. The actual thickness of the heads is 0.950 inch and the shell is 0.900 inch. What is the vessel remaining life?

• 7.5 years

• 10 years

• 15 years

• 20 years

Definition of non-standard vessel:

• a vessel not fabricated to a recognized construction code and meeting no known recognized standard.

• a vessel fabricated to a recognized construction code but has lost its nameplate or stamping.

• a vessel constructed in accordance with an applicable construction code.

• a vessel constructed without a construction code.

Temporary repair to pressure vessel:

• Must be replaced with permanent repairs during next scheduled shutdown.

• May remain in place for long periods if approved by pressure vessel engineer only.

• May remain in place for longer periods of time if approved by the API-authorized pressure vessel inspector only.

• May remain in place for a longer period if approved by the engineer and the inspector.

Who should implement and maintain an effective program for creating, establishing, and monitoring integrity operating windows.

• Owner/user

• Inspector

• Engineer

• Repair organization

What is primary goal of the internal inspection according to API 510?

• to find damage under deposits or linings

• to find damage that cannot be found by regular monitoring of external CMLs.

• to obtain vessel thickness for calculating corrosion rate.

• to comply with jurisdiction requirement

On-stream inspection may be acceptable in lieu of internal inspection for vessels under the specific circumstances. In situations where on-stream inspection is acceptable, such inspection may be conducted:

• While vessel is operating.

• During shut down only.

• while vessel is depressurized.

• while vessel is depressurized or pressured.