API 510 Standards & Best Practices 5

Question 1

API 510 requires thickness measurements to be taken at locations most susceptible to corrosion. Which factor most influences the selection of these measurement locations?

Accepted Answer

Known or anticipated damage mechanisms based on process conditions

Answer

Thickness measurement locations should be selected based on knowledge of the damage mechanisms expected given the specific process fluid and operating conditions.

Question 2

According to API 510, what is the correct action when an inspector finds a crack in a pressure vessel during an internal inspection?

Accepted Answer

Evaluate the crack using FFS methods or remove it from service until repairs are made

Answer

Cracks found during inspection must be evaluated using fitness-for-service methods or the vessel must be removed from service until appropriate repairs are completed.

Question 3

In API 510, what does the term 'corrosion allowance' represent?

Accepted Answer

The extra thickness added during fabrication to accommodate anticipated metal loss during service life

Answer

Corrosion allowance is thickness added at fabrication beyond the calculated required thickness to allow for expected corrosion over the vessel's intended service life.

Question 4

Under API 510, an owner/operator wants to use external inspection in lieu of internal inspection. What condition must be met?

Accepted Answer

The authorized inspector must determine that internal entry is impractical and that external methods can adequately assess conditions

Answer

External inspection may substitute for internal inspection only when the authorized inspector determines internal entry is impractical and external NDE methods can adequately evaluate vessel condition.

Question 5

According to API 510, which of the following best describes the role of the 'Inspector' versus the 'Authorized Inspection Agency (AIA)'?

Accepted Answer

The AIA employs or qualifies the authorized inspector; the inspector carries out actual inspection work

Answer

The AIA is the organization that employs or qualifies the authorized inspector; the authorized inspector is the individual who actually performs inspection activities.

(API 510) API 510 Inspector Certification Practice Test

(API 510) API 510 Inspector Certification Practice Test

API 510 Standards & Best Practices 5