FIFTH CANADIAN CONFERENCE ON NONDESTRUCTIVE ... - IAEA

20. OPERATIONAL UTILIZATION
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Film interpreters do not, at present, have tools available with which to
enhance conventional film radiographs. It is envisioned that the main
functions of real time radiography will be to inspect more quickly with
higher quality and reliability. If real time radiographie images qualify
according to specifications, no enhancement schemes need be used. The
inspector will continue to interpret images the same as he did with
conventional radiography. If questions arise, enhancement might help answer
them. It is not foressen that special enhancement functions will be
performed during normal operations• The keys to the real time radiography
system will be to avoid a bottleneck in production and to provide a better
system with which to perform radiography.
21. CONCLUSION
This paper has outlined the basis for comparison of conventional film
radiography to real time radiography. Technical evaluations of existing real
time radiographie systems have shown that it is feasible to bring a
laboratory system onto a laybarge and achieve results which will outshine
conventional radiography. Quantified comparative data will result when field
testing is complete. Field testing will also help the offshore industry warm
to the idea of real time radiography as a viable non-destructive weld
examination technique for offshore pipelines.
21.1 Acknowledgements ;
The author wishes to thank the management of Brown & Root for continued
support of this project, and Mr. James H. Walker for his contagious
enthusiasm and guidance from the inception of this work.
22. REFERENCES
1. "Standard for Welding Pipelines and Related Facilities", American
Petroleum Institute, Fifteenth Edition, 1980.
2. "Standard Method for Controlling Quality of Radiographie Testing
SE-142", American Society of Mechanical Engineers, Section V, Article
22, "ASME Boiler and Pressure Vessel Code", 1983.
3. Jacoby, M.H., "Image Data Analysis", Section 15, The Nondestructive
Testing Handbook on Radiography and Radiation Testing, 1982.
4. Pratt, W.K., Digital Image Processing John Wiley and Sons (1978).
5. Cutting, C.C., "X-Raying Pipe on the Line", Welding Design &
Fabrication, April 1983.
6. Hill, D.E. and Galbraith, J.M. "Radiographie Surveys for the
Evaluation of Corrosion Damage in Crude Oil Lines in the Eastern
Operating Area of Prudhoe Bay", paper 52, presented at the
International Corrosion Forum, Anaheim, California, April 18-22,
1983.