API 510 Inspection Planning and Scheduling 4

Question 1

Which condition would MOST likely prompt an inspector to specify ultrasonic thickness (UT) scanning rather than spot UT readings in the inspection plan?

Accepted Answer

Localized or pitting corrosion with high variability in prior readings

Answer

When prior data shows localized or pitting corrosion, scanning covers a larger area to find the minimum thickness rather than relying on spot readings that may miss the worst locations.

Question 2

An API 510 inspection plan should document which of the following?

Accepted Answer

Inspection scope, methods, locations, acceptance criteria, and responsible personnel

Answer

A complete inspection plan specifies what will be inspected, which NDE methods will be used, where measurements will be taken, acceptance criteria, and who is responsible.

Question 3

When should fitness-for-service (FFS) assessment per API 579 be incorporated into inspection planning?

Accepted Answer

When inspection reveals damage mechanisms or flaws that may challenge fitness of the vessel

Answer

FFS assessment is triggered when inspection findings such as corrosion, cracks, or dents raise questions about whether the vessel can safely continue operation.

Question 4

For vessels subject to stress corrosion cracking (SCC), which NDE method should be emphasized in the inspection plan?

Accepted Answer

Surface examination techniques such as wet fluorescent magnetic particle or liquid penetrant testing

Answer

SCC produces tight surface-breaking cracks best detected by wet fluorescent magnetic particle (WFMT) on ferromagnetic materials or liquid penetrant testing (PT) on non-ferromagnetic surfaces.

Question 5

What action is required under API 510 if actual corrosion is found to exceed the corrosion rate used in the current inspection interval calculation?

Accepted Answer

Recalculate remaining life using the updated rate and adjust the next inspection date accordingly

Answer

When actual corrosion exceeds the assumed rate, remaining life must be recalculated and the inspection schedule revised to reflect the more aggressive deterioration.

(API 510) Certified Pressure Vessel Inspector Practice Test

(API 510) Certified Pressure Vessel Inspector Practice Test

API 510 Inspection Planning and Scheduling 4