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Lesson learned from Co-60 accident in Thailand
T Thongpraparn1, P Chaudakshetrin, P Buranapong
1Department of Radiology, Faculty of Medicine, Siriraj Hospital, Mahidol University, Bangkok, Thailand. sittp@mucc.mahidol.ac.th
Australasian Physical & Engineering Sciences in Medicine
|July 16, 2003
Summary
An orphaned Cobalt-60 (Co-60) radiation source was dismantled in a Thailand scrapyard, causing radiation sickness in ten workers, three fatally. This incident underscores the critical need for secure management of radioactive materials.
Area of Science:
- Nuclear Safety
- Radiation Protection
- Public Health
Background:
- Orphaned radioactive sources pose significant risks when mishandled.
- A Cobalt-60 (Co-60) teletherapy source was lost and ended up in a scrap metal yard.
- Lack of awareness regarding radiation hazards contributed to the accident.
Purpose of the Study:
- To analyze the causes and consequences of the Samutprakarn Co-60 radiation accident.
- To derive lessons for preventing future radiation incidents.
- To emphasize the importance of regulatory controls for radioactive sources.
Main Methods:
- Case study analysis of a real-world radiation accident.
- Review of incident reports and medical outcomes.
- Comparison with similar historical radiation events.
Main Results:
- An unshielded Co-60 source (15.7 TBq) was dismantled by unaware scrapyard workers.
- Ten individuals developed radiation sickness, resulting in three fatalities.
- The incident prompted public alarm and national concern regarding radiation safety.
Conclusions:
- Proper disposal and security of spent high-activity radioactive sources are crucial.
- Enhanced regulatory oversight and public education are vital to prevent similar accidents.
- The accident highlights the severe health consequences of mishandling radioactive materials.