Stichting Laka

Event Report Forms (ERFs) are filed to the IAEA. Sometimes there are multiple event reports, updating the rating, the event description. Here you only see the latest event report

ERF send date: Tue, 01-11-2005
ERF description: On October 27, 2005, the Nuclear Regulatory Commission (NRC) was notified by one of its radiography licensees that a potential overexposure may have occurred during radiographic operations. According to the licensee, a radiographer was disconnecting the source guide tube from the radiographic device and noticed that the source was not in the fully shielded position. The exposure device contained a 807 gigabecquerel (21.8 Ci) iridium-192 sealed source. The radiographer noticed that his pocket ion chamber was off-scale and notified the radiation safety officer (RSO). Because extremity dosimeters are not commonly used during radiographic operations, the RSO conducted a dose reconstruction. Based on the dose reconstruction, one individual may have received an extremity dose in the range of 3.3-3.6 Gy (330-360 rad), a dose in excess of NRC’s annual occupational shallow dose equivalent limit of 500 mSv (50 rem) to the skin of the extremity. Whole body dosimeter results revealed that the radiographer received a whole body dose of approximately 2 mSv (200 mrem). The radiographer was admitted to the hospital for observation and has been released.

On October 28, 2005, the NRC initiated an onsite inspection to review the circumstances that led to the event. Initial information obtained indicated the individual had worn his dosimeter on his hip and his body may have shielded the dosimeter. The NRC will conduct a reenactment and will use the information to perform dose estimates.
ERF rating date: 31-10-2005
ERF contact person: Cynthia Jones
ERF address: Washington, DC USA
ERF affiliation: United States Nuclear Regulatory Commission

This map shows a selection of reports from nuclear and radiological incidents stored in the IAEA NEWS-database.
Locations are estimates. Contact us if a location is wrong.
The map shows a maximum of 100 incidents. If hundred incidents or more are within the map, the yellow perimeter indicates from where events are excluded. Drag or zoom the map to explore different areas.

Power Reactor Research Reactor Radwaste Facility Enrichment Facility Radiation Source Irradiation/Accelerator Facility Transportation

Fuel Fabrication Fuel Reprocessing Research Facility Mining/Milling Radioisotope Processing/Handling Facility Other