CRI IQI Selection & Radiographic Sensitivity

Question 1

What does IQI stand for in radiographic testing?

Accepted Answer

Image Quality Indicator

Answer

Integrated Quality Index

Answer

Inspection Quality Interface

Answer

Image Quantification Instrument

Question 2

Which ASTM standard specifically covers hole-type (plaque) IQIs used in industrial radiography?

Accepted Answer

ASTM E1025

Answer

ASTM E747

Answer

ASTM E94

Answer

ASTM E1742

Question 3

On a hole-type IQI, what is the diameter of the 2T hole relative to the IQI thickness?

Accepted Answer

Equal to twice the IQI thickness

Answer

Equal to the IQI thickness

Answer

Equal to four times the IQI thickness

Answer

Equal to half the IQI thickness

Question 4

For single-wall radiography, hole-type IQI selection is based on which thickness measurement?

Accepted Answer

Nominal single-wall thickness being radiographed

Answer

Total thickness including weld reinforcement

Answer

Average of base metal and weld crown height

Answer

Minimum wall thickness minus corrosion allowance

Question 5

What does a radiographic sensitivity designation of '2-2T' indicate?

Accepted Answer

The 2T essential hole in the IQI designated for that thickness range is visible

Answer

Two separate IQIs must both show visible holes

Answer

The IQI is 2 inches thick with a 2T hole

Answer

Two-percent exposure tolerance with a 2T hole reference

Question 6

Which ASTM standard covers wire-type IQIs used in radiographic testing?

Accepted Answer

ASTM E747

Answer

ASTM E1025

Answer

ASTM E94

Answer

ASTM E1742

Question 7

On which side of the test object should the IQI preferably be placed according to most radiographic codes?

Accepted Answer

Source side of the object being radiographed

Answer

Film side of the object being radiographed

Answer

Either side, depending on radiographer preference

Answer

Perpendicular to the central beam axis