Radioactive materials in recycled metals--an update

Area of Science:

• Environmental Science
• Materials Science
• Public Health

Background:

• Accidental meltings of radioactive sources in metal mills have occurred globally.
• Public exposures resulted from stolen radioactive devices.
• Inadequate control and accountability of radioactive materials were identified.

Purpose of the Study:

• To review the issue of radioactive materials in recycled metals.
• To update the database on incidents involving radioactive materials in the metal recycling industry.
• To highlight the need for improved regulatory oversight.

Main Methods:

• Analysis of reported incidents of radioactive materials in recycled metals.
• Review of data collected by the Steel Manufacturers Association.
• Examination of actions taken by the U.S. Nuclear Regulatory Commission.

Main Results:

• Over 2,300 reports of radioactive materials found in recycled metal scrap were documented by June 1997.
• 35 accidental meltings and 293 other contamination events were reported in the U.S. by April 1995.
• The issue has persisted with additional incidents occurring after 1995.

Conclusions:

• The presence of radioactive materials in recycled metals remains a significant concern.
• Improved control, accountability, and regulatory measures are necessary.
• Continued monitoring and data collection are essential for the metal recycling industry.