1

INES Levels
INES N/A 
INES 4
INES 0
INES 5
INES 1
INES 6
INES 2
INES 7
INES 3

INES 1: Anomaly

Impact on Defence-in-Depth
  • Overexposure of a member of the public in excess of statutory ­annual limits.
  • Minor problems with safety components with significant defence-in-depth remaining.
  • Low activity lost or stolen radioactive source, device or transport package.
(Arrangements for reporting minor events to the public differ from country to country. Also, it is difficult to ensure precise consistency in rating events between INES Level-1 and Below scale/Level-0)
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INES-event
INES 1

Lost radiopharmaceutical during its transport

On 12 May, a type A package containing radioactive material for radiopharmaceutical use has been lost during its transport between Saclay (France) and the consignee in Tunis (Tunisia).
This package consigned by CIS bio international (France) contains a limited quantity of Iodine-131 (a total of 5.15 GBq).

The competent authority of France has informed the comptetent authority if Tunisia.

Due to the loss of this package, the competent authority of France rated this event at level one on the INES scale.

Category: Transportation France »

INES-event
INES 1

Potential Loss of Containment Due to Small Crack in Torus

On June 27, 2005 at the James A. FitzPatrick plant, inspectors identified a small leak coming from a through-wall crack of the torus shell. The torus crack size was about 4.6 inches long, but with some branching cracks connected to the major crack. The crack at FitzPatrick was located close to an external support column which is welded to the outside of the torus. These external support columns were added in the 1980s as part of the Mark I improvements to stiffen the torus against blowdown stresses. The torus wall is 5/8 inch thick.

Category: Power Reactor United States of America »

INES-event
INES 1

Potential Radiographer Overexposure

On May 2, 2005, the State of Texas Department of State Health Services received notification from a radiography licensee indicating that a radiographer may have received a whole body dose of 46.6 millisievert (mSv) or 4.6 rem during the period of March 20, 2005 through April 19, 2005. Based on previous dosimetry results, the individual’s annual cumulative dose is 63.95 mSv (6.4 rem), a dose in excess of the NRC’s annual occupational total effective dose equivalent limit of 50 mSv (5 rem).

Category: Radiation Source United States of America »

INES-event
INES 1

Missing Radioactive Gauge

On January 6, 2004, Louisiana Radiation Protection Services notified the Nuclear Regulatory Commission that a licensee’s radioactive device could not be located. The device is a Kay-Ray Model 7063P gauge, with serial number 12349, currently containing a 11.71 Gbq (316.4 milliCurie) source of Cs-137. Since 1984, the device has been stored in a secured wooden crate with proper labeling, inside a locked warehouse with limited access at the licensee’s facility. The device was last accounted for during an inventory conducted on September 4, 2003.

Category: Radiation Source United States of America »

INES-event
INES 1

I-192 sealed source stolen

A GammaMat TSI 3/I equipment - matr. 156, containing a 1.92 TBq Iridium 192 source, was stolen in South Italy on November 25th 2005, together with the lorry used for its transportation. The equipment, used for non destructive tests, was in secured position at the time it was stolen. The event was notified to the National Safety Authority by the competent police department, according to the applicable procedure.

Category: Radiation Source Italy »

INES-event
INES 1

Lost Radiographic Exposure Device

On May 29, 2005, a licensee notified the Nuclear Regulatory Commission (NRC) that one of their radiographic devices containing a sealed source of approximately 1.63 terabecquerels (44 Ci) of iridium-192 fell into the ocean. The event occurred during a transfer of the device from an offshore oil rig to a boat. The licensee stated that they intended to send a team of divers to try and retrieve the device.

Category: Radiation Source United States of America »

INES-event
INES 1

Sealed sources stolen from an industrial non destructive test company

On March 1th 2004, four devices used for industrial gammagraphy and an X-ray apparatus were stolen from premises of an industrial non destructive test company near Taranto, in South Italy.
As referred by the company responsible, the devices are all equipped with Ir-192 sealed radiation sources, with the following identification number, type and activity respectively:
Matr. 1727, GAMMAMAT TI/F, 207.2 GBq;
Matr. 1117, GAMMAMAT TI/F, 124.69 GBq;
Matr. 1228, GAMMAMAT TI/F, 1055.56 GBq;
Matr. 130, GAMMAMAT TSI/F, 467.62GBq.

Category: Radiation Source Italy »

INES-event
INES 1

Radioactive orphan source of Eu-152,154

Based on the information from the Republic of Slovenia, the orphan source of Eu-152,154 was discovered on November 29, 2004 in the truck transporting scrap lead. Measured dose rate on the surface of the truck was 130 microSv/h. Source was isolated and safely stored.
After the examination, it was concluded that this source was part of lightning preventer, which was installed in the industrial zone near Osijek, Croatia. The activity of the source in 1986 was 11.1 GBq.

Category: Radiation Source Croatia »

INES-event
INES 1

Loss of an excepted package shipped to Slovakia

End October 2004 the French authorities were notified that the package had arrived on September, 22 to Warsaw airport (Poland) due to an error in the transfer in Praha airport. The package was due to return to France as soon as possible, after having received the appropriate transport authorisation.

Category: Transportation France »

INES-event
INES 1

Unplanned exposure of workers

On 21 October , 2004 Radiation and Nuclear Safety Authority (STUK) received information that an event occurred on 20 October, 2004, resulting in unplanned exposure of two radiographers. The elevated doses, 11 mSv and 18 mSv, were caused by the failure to retract a source to its locked position after exposure. The radiographers had personal alarming rate meters, but because of using hearing protectors in noisy environment they were not able to hear the alarming sound until they had removed the device 20 meters to next workplace.

Category: Radiation Source Finland »