2

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

INES 2: Incident

Impact on People and Environment:
  • Exposure of a member of the public in excess of 10 mSv.
  • Exposure of a worker in excess of the statutory annual limits.
Impact on Radiological Barriers and Control:
  • Radiation levels in an operating area of more than 50 mSv/h.
  • Significant contamination within the facility into an area not expected by design.
Impact on Defence-in-Depth:
  • Significant failures in safety ­provisions but with no actual ­consequences.
  • Found highly radioactive sealed orphan source, device or transport package with safety provisions intact.
  • Inadequate packaging of a highly radioactive sealed source.
Javascript is required to view this map.
INES-event
INES 2

Overexposure to Radiographer’s Assistant

A radiographer assistant exceeded the 50 mSv (5 rem) exposure limit for 2012. This individual consistently had higher exposures than other employees and had failed to turn in his badge at the end of April 2012, instead continuing to wear it through May. At the end of October, the assistant again failed to turn in his badge and wore it through November, but turned in his December badge. After his badge worn during October and November 2012 was finally turned in and processed, it was identified that his total dose for the year 2012 was 59 mSv (5.9 rem).

Category: Radiation Source United States of America »

INES-event
INES 2

ASN decided to uprate as level 2 on the INES scale an event related to non-compliance with the requirements applicable to labelling, storage and on-site transfer of wet fissile materials

On September 26th 2012, the company FBFC (subsidiary of AREVA) notified ASN of an event related to non-compliance with the requirements applicable to packaging, storage and on-site transfer of wet fissile materials within its nuclear fuel fabrication plant in Romans-sur-Isère (Drôme).

AREVA – FBFC suggested ASN to rate this event at level 1 on INES.

The event occurred in the premises of the basic nuclear installation dedicated to the production of PWR fuel.

Category: Fuel Fabrication France »

INES-event
INES 2

Overexposure of a radiographer

A radiographer went in a bunker where industrial radiography operations were made. The ionising source was a X-ray machine (225kV - 4mA). The radiographer thought that the irradiation was finished but this was not the case and he was exposed.

According to the biological dosimetry, the radiographer received a whole body dose below 200mSv.

At the moment, the licencee is making a reconstitution of the incident to better determine the dose

Category: Radiation Source Belgium »

INES-event
INES 2

Overexposure of a worker

A worker made adjustments on a X-ray machine (65kV - 1.8mA) despite the fact that the device was in test.
The worker received between 5 and 7 Gy on each hands during the intervention. The whole body dose that he received is 1.4 mSv.

Category: Radiation Source Belgium »

INES-event
INES 2

Three radioactive level gauges stolen and later found open

On 09.09.2012, the Bulgarian Nuclear Regulatory Agency (BNRA) received a notification for the theft of 3 level gauges from the Polimery JSC. Site, Devnya town. Stolen level gaugescontained Cs-137 sources with activity of 51.5 GBq each (calculated activity for the day of the robbery). The same day, the police found the source containers at a scrap yard, located closely. Containers were broken and the sources were missing.
Later, as a result of police investigation, the thieves were arrested and the missing sources were found, secured and put into a safe storage.

Category: Radiation Source Bulgaria »

INES-event
INES 2

Uranium 233 / 238 Inhalation Overexposure

A graduate student inhaled a mixture of U-233 and U-238 while working in a lab grinding a compound of uranium octoxide. The student used a glove box instead of a hood with a high-efficiency particulate air (HEPA) filter, contrary to the University of Nevada Las Vegas approved procedure. This happened twice, possibly between October 1, 2011 and April 1, 2012. The first bioassay, based on an inhalation date of October 1, 2011, resulted in a dose of 177.2 mSv (17.72 rem) total. When the inhalation date was assumed to be April 1, 2012, the result was 55.2 mSv (5.52 rem).

Category: Research Facility United States of America »

INES-event
INES 2

Overexposure to Radiographer’s Assistant

On April 16, 2012, the licensee radiographer’s assistant informed the licensee Radiation Safety Officer that his pocket dosimeter had gone off scale 10 days prior. The licensee sent the radiographer’s permanent badge for processing and the result was a 250 mSv (25 rem) whole body dose reading. The State of Florida was informed of the dose on April 24, and has verified the dose. The State of Florida continues its investigation.

Update 8/15/2012: The radiographer assistant’s film badge was sent for processing.

Category: Radiation Source United States of America »

INES-event
INES 2

Worker overexposure

The Ionizing Radiation Calibration Laboratory (IRCL) of the Greek Atomic Energy Commission (GAEC) is equipped with a Co-60 irradiator, used for calibration purposes of radiotherapy dosimeters. In the period 19 - 25 April 2012 the replacement of the Co-60 source (nominal radioactivity of 20 TBq -April 2012) with a “new” Co-60 source (nominal activity of 110 TBq - April 2012) was conducted. The technical part of the source reloading was fully undertaken by the manufacturer of the irradiator (from abroad), who, also, provided the technical personnel (two technicians).

Category: Radiation Source Greece »

INES-event
INES 2

Overexposure to Radiographer

Update 6/4/12: The licensee determined that the radiographer had been distracted by use of her cell phone while performing radiography operations, and her head had been approximately 30 cm (12 inches) below the location of the source for about three minutes, while she set-up the next shot. After exiting the bay, she went to unlock the camera and crank-out the source, but then realized the camera was already unlocked and the source was still cranked out from the previous shot and was positioned inside the collimator.

Category: Radiation Source United States of America »

INES-event
INES 2

Discovery of orphan source in a steel mill

On 9 May, a portal monitor alarm was triggered when a truck loaded with scrap from Kenitra (Morocco) came into Siderúrgica Sevillana (a steel manufacturing facility). The truck was isolated within the facility in an area with restricted access to people.

Category: Radiation Source Morocco Spain »