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 excepted package between France and Austria

The lost package between France and Autria has subsequently be found and deliverd to its recipient in Autria.

Category: Transportation France »

INES-event
INES 1

Stolen Radiographic Exposure Device

On September 13, 2006 the Texas Department of State Health Services notified the Nuclear Regulatory Commission (NRC) that a radiography truck was stolen. An iridium 192 source with an activity of approximately 3.7 terabecquerels (100 Ci) was stored on the truck. The truck was parked at a gas station and the driver was in the store talking with his supervisor. The keys were reportedly left in the vehicle. The event was reported to the local law enforcement authorities, FBI, and the state of Texas.

Category: Radiation Source United States of America »

INES-event
INES 1

Loss of a type A package

EVENT DESCRIPTION:On July 5, 2006, a type A package containing radioactive material for radiopharmaceutical use has been lost during its transport between Saclay (France), Brussels airport (Belgium) and the consignee located in Balearic Islands (Spain).This package consigned by CIS bio international (France) contains a limited quantity of Mo 99 (a total of 52 GBq).

Category: Transportation France »

INES-event
INES 1

One partly shielded Cs-137 radioactive source found in a 40 ft scrap container

On June 22, 2006 the Inspectorate was notified by a scrap metal dealer that they had a radiation alarm of their portal detector. Using handheld survey equipment they measured an enhanced radiation level at the surface of a 40 ft container of 100 microsieverts per hour. The container was unloaded by a firm specialised in tracing and recovering of radioactive sources in scrap metal. An object, made of an unknown metal, which was expected to be a collimator, with in it a cesium-137 source was found. This 'pseudo-source holder' contained no shutter mechanisms, nor lifting connector.

Category: Radiation Source Netherlands »

INES-event
INES 1

Temperature increase of control rod drive housing 6/7 during restart of Unit 4

On 22/06/2006 Unit 4 was in operational state E1 (232 oC). At 06:30 while monitoring computer displays after shift turnover the reactor operator discovered that the temperature of CRD housing 6/7 exceeded the limit specified in TS 5.4.1.2.2 (max. 100 oC-5 min). Subsequently, the operator lowered the CR drives from lower end switch into lower end stop by manual scram, thereby deenergizing them. 4 out of 6 RCPs which had been operating until that time, were shut down (RCPs 2,4,5,6).

Category: Power Reactor Hungary Paks »

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 »