INTERVIEW QUESTIONS - [6] - RT

INTERVIEW QUESTIONS

Radiography Testing

1. What is IQI?


Ans: IQI stands for image quality indicator. Penetrameter is the another word used for IQI.

2. What is the difference in placing DIN and ASTM penetrameter in a radiography film?


Ans: ASTM standard penetrameter is placed on the left side of the radiography film as the smallest thickness wire is on the left side of the penetrameter.
DIN type penetrameter is placed on the right side of the radiography film as the thinnest wire is on the right most side of penetrameter.

3. How many wires are there in a ASTM and DIN penetrameter?


Ans: ASTM penetrameter is having 6 wire's  where as DIN penetrameter is having 7 wire's.

4. What are the main classification of penetrameter?


Ans: Hole type and wire type are the two types of penetrameter.

5. Which is the material of construction of penetrameter?


Ans: Same material or a material similar to the specimen being radiographed.



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