Radiation Source Inventory Toolbox Talk

Maintaining an accurate radiation source inventory is essential for controlling radioactive materials and preventing loss, theft, unauthorized use, or accidental exposure. Organizations that use radioactive sources, such as industrial radiography equipment or nuclear density gauges, must know the location and status of every source at all times. Proper inventory management helps ensure sources remain secure, are inspected regularly, and are only handled by trained and authorized personnel.

This toolbox talk reviews the importance of radiation source inventory, accountability, and worker responsibilities for maintaining the security of radioactive materials.

Why This Matters

• Radioactive sources can present serious health hazards if lost, damaged, or improperly handled.
• Accurate inventories help prevent misplaced or missing radioactive sources.
• Source accountability protects workers, the public, and the environment.
• Routine inventory checks support regulatory compliance and safe operations.
• Prompt identification of discrepancies allows immediate corrective action.

Common Source Inventory Hazards

• Missing or unaccounted-for radioactive sources.
• Unauthorized access to stored radioactive materials.
• Improper labeling or identification of radiation sources.
• Failure to document source movement between storage and work areas.
• Damaged storage containers or security devices.
• Incomplete or inaccurate inventory records.
• Leaving radiation sources unattended in work areas.
• Failure to report lost, stolen, or damaged sources immediately.

Safety Checklist

Before Work Begins

• Verify the required radioactive source is listed on the current inventory.
• Inspect storage containers, locks, labels, and source identification before use.
• Confirm only trained and authorized personnel have access to radioactive sources.
• Document the removal of any source from secure storage according to company procedures.
• Inspect the source container for damage or signs of tampering.
• Review transportation and handling procedures before moving the source.

During and After Work

• Maintain continuous accountability for radioactive sources while they are in use.
• Never leave radioactive sources unattended or unsecured.
• Return sources to approved secure storage immediately after work is completed.
• Document the return of each source according to company procedures.
• Report missing, damaged, or suspected tampered sources immediately.
• Participate in scheduled inventory audits and inspections as required.

Crew Talking Points

• Who is responsible for maintaining today's radiation source inventory?
• How are radioactive sources identified and tracked on this project?
• What procedures are followed when removing or returning a source to storage?
• What should workers do if a source cannot be immediately located?
• How is unauthorized access to radiation sources prevented?
• Speak up immediately if you observe missing inventory records, unsecured storage, damaged containers, or suspicious activity involving radioactive sources.

Stop Work If

• A radioactive source cannot be accounted for.
• A source container appears damaged, tampered with, or improperly labeled.
• Unauthorized personnel have access to radioactive sources.
• Inventory records do not match the actual sources present.
• Secure storage cannot be maintained.
• You are unsure about the location, status, or security of a radioactive source.

Final Reminder

Every radioactive source must be accounted for at all times. Follow inventory procedures, maintain secure storage, document source movement accurately, and report any discrepancies immediately. Strong inventory control helps prevent loss, theft, unauthorized use, and unnecessary radiation exposure while protecting workers, the public, and the environment.