API 510 Repair and Alteration 4

Question 1

What is the primary purpose of a fitness-for-service (FFS) assessment in the context of API 510 repair decisions?

Accepted Answer

To evaluate whether a vessel with a flaw can continue operating safely without immediate repair

Answer

FFS assessments per API 579 evaluate whether a vessel with identified flaws can continue safe operation, potentially avoiding costly immediate repairs.

Question 2

Under API 510, a rerating that decreases the MAWP of a pressure vessel:

Accepted Answer

Always requires an authorized pressure vessel inspector and engineering approval

Answer

All reratings, whether increasing or decreasing MAWP, require authorized inspector review and appropriate engineering documentation per API 510.

Question 3

A weld repair procedure must be qualified per which standard before being used on a pressure vessel?

Accepted Answer

ASME Section IX

Answer

Weld procedure qualifications for pressure vessel repairs must be performed and documented in accordance with ASME Section IX.

Question 4

When planning a repair on a vessel with stress corrosion cracking (SCC), the most important first step is to:

Accepted Answer

Identify and eliminate the cause of the SCC before repairing

Answer

Repairing SCC without addressing the root cause will result in recurrence; the causative agent or condition must be identified and eliminated first.

Question 5

According to API 510, non-pressure-bearing attachments welded to a pressure vessel are:

Accepted Answer

Subject to the same inspection requirements as pressure welds

Answer

Non-pressure-bearing attachments welded to pressure vessels are subject to inspection requirements because improper welding can introduce flaws into the pressure boundary.

(API 510) API 510 Inspector Certification Practice Test

(API 510) API 510 Inspector Certification Practice Test

API 510 Repair and Alteration 4