API 510 Code Requirements 3

Question 1

When API 510 refers to an 'alteration' to a pressure vessel, which of the following best describes this term?

Accepted Answer

A physical change to a pressure-containing component that affects its design

Answer

An alteration is a physical change to pressure-containing parts that affects the design conditions or the pressure-containing capability of the vessel.

Question 2

According to API 510, what is the primary purpose of the corrosion rate established from inspection data?

Accepted Answer

To set the next inspection interval and predict remaining service life

Answer

The corrosion rate is used to calculate remaining life and to set the next inspection interval based on when the vessel will reach minimum required thickness.

Question 3

Under API 510, a vessel owner wants to use a higher allowable stress than the original code of construction allowed. This would constitute:

Accepted Answer

A rerating of the vessel requiring engineering review and documentation

Answer

Using higher allowable stress to increase MAWP constitutes a rerating that requires engineering calculations, documentation, and review per API 510.

Question 4

API 510 specifies that weld repairs on pressure vessels must be performed using:

Accepted Answer

Procedures and welders qualified in accordance with the applicable construction code

Answer

Weld repairs must use procedures and welders qualified per the applicable construction code (typically ASME Section VIII and Section IX).

Question 5

According to API 510, what post-weld heat treatment (PWHT) requirement applies to weld repairs on vessels that required PWHT during original fabrication?

Accepted Answer

PWHT is required unless an approved alternative procedure is used

Answer

Vessels that required PWHT during fabrication generally require PWHT after repair welding unless an approved alternative (such as temper bead welding) is documented and approved.

(API 510) API 510 Inspector Certification Practice Test

(API 510) API 510 Inspector Certification Practice Test

API 510 Code Requirements 3