Understanding NRT- Reading 1- 2 of 2- Radiogaphic Testing A
Understanding nrt reading 1- 2 of 2- radiogaphic testing a
Understanding nrt reading 1- 2 of 2- radiogaphic testing a
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Placement <strong>of</strong> IQIs<br />
IQIs should be placed on the source side <strong>of</strong> the part over a section with a<br />
material thickness equivalent to the region <strong>of</strong> interest. If this is not possible,<br />
the IQI may be placed on a block <strong>of</strong> similar material and thickness to the<br />
region <strong>of</strong> interest. When a block is used, the IQI should the same distance<br />
from the film as it would be if placed directly on the part in the region <strong>of</strong><br />
interest. The IQI should also be placed slightly away from the edge <strong>of</strong> the part<br />
so that atleast three <strong>of</strong> its edges are visible in the radiograph.<br />
Charlie Chong/ Fion Zhang
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