API 653 Code Requirements 2

Question 1

According to API 653, what is the minimum thickness requirement for a tank bottom when it is being evaluated for continued service?

Accepted Answer

Determined by the corrosion rate and remaining service life calculation

Answer

API 653 requires that minimum acceptable bottom thickness be determined by calculating remaining corrosion life versus required inspection intervals.

Question 2

Under API 653, which standard governs the design requirements referenced for new shell plates used in tank repair?

Accepted Answer

API 650

Answer

API 653 references API 650 as the governing design standard for new materials and welding requirements used in repairs and alterations.

Question 3

What does API 653 define as a 'reconstruction' of a tank?

Accepted Answer

Relocation of a tank to a new site with reassembly

Answer

Reconstruction under API 653 specifically refers to disassembling and relocating a tank to a new site, which triggers additional requirements.

Question 4

Per API 653, when must an authorized inspection agency be involved during tank repair or alteration work?

Accepted Answer

For all alterations and major repairs as defined in the standard

Answer

API 653 requires that an authorized inspection agency be involved in all alterations and repairs classified as major under the standard.

Question 5

Which API 653 section addresses requirements for tanks storing products at temperatures above 200°F?

Accepted Answer

Appendix provisions for high-temperature service

Answer

High-temperature service requirements in API 653 are addressed in appendix sections that supplement the main body requirements.

(API 653) API 653 Aboveground Storage Tank Inspector Certification Practice Test