Advantages:
Radiographic testing has many advantages, some of the most significant of which are listed below. It:
1. Provides an extremely accurate and permanent record
2. Is very versatile and can be used to examine many shapes and sizes
3. Is quite sensitive, assuming the discontinuity causes a reasonable reduction of cross section thickness
4. Permits discontinuity characterization
5. Is widely used and time-proven
6. Is a volumetric NDT method
Limitations:
1. There are safety hazards with the use of radiation devices
2. RT has thickness limitations, based on material density and energy used
3. RT can be time-consuming
4. RT is very costly in initial equipment and expendable materials
5. It is also very dependent on discontinuity orientation
6. RT requires extensive experience and training of the personnel taking the radiographs and during the interpretation.
Ref: "Handbook of Non-Destructive Evaluation" by Charles J. Hellier
McGRAW-HILL Publications..