API 510 Code Compliance & Safety Regulations 5

Question 1

API 510 allows the on-stream inspection interval for external inspections to be extended up to a maximum of:

Accepted Answer

5 years

Answer

API 510 permits external on-stream inspection intervals up to a maximum of 5 years unless RBI analysis justifies a different interval within allowed limits.

Question 2

Under API 510, what is the maximum internal or on-stream inspection interval for pressure vessels not subject to an RBI program?

Accepted Answer

10 years or half the remaining life, whichever is less

Answer

Without RBI, API 510 limits internal or equivalent on-stream inspection intervals to 10 years or half the calculated remaining corrosion life, whichever is less.

Question 3

A weld repair on a pressure vessel shell requires post-weld heat treatment (PWHT). Under API 510, who must authorize the PWHT procedure before work begins?

Accepted Answer

The Authorized Inspector

Answer

The Authorized Inspector must review and authorize the repair procedure, including PWHT requirements, before repairs commence.

Question 4

Under ASME Section VIII Div. 1, the 'U' stamp on a nameplate signifies that:

Accepted Answer

The vessel was manufactured in compliance with ASME Section VIII Div. 1

Answer

The 'U' stamp is the ASME certification mark indicating the vessel was designed and fabricated in accordance with ASME Section VIII Division 1.

Question 5

Which API 510 concept allows continued operation of a vessel with a known flaw when a rigorous engineering analysis demonstrates the vessel remains safe?

Accepted Answer

Fitness-for-Service (FFS) assessment per API 579-1

Answer

API 579-1/ASME FFS-1 provides engineering methods to assess whether vessels with flaws, damage, or degradation are fit for continued service.

(API 510) Certified Pressure Vessel Inspector Practice Test

(API 510) Certified Pressure Vessel Inspector Practice Test

API 510 Code Compliance & Safety Regulations 5