2

INES Levels
INES N/A
INES 0
INES 1
INES 2
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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.
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INES-event
INES 2

Overexposure to Radiographer

During the performance of industrial radiography, the licensee radiographer approached the collimator without his survey meter. The radiographer positioned the collimator in preparation for an exposure shot without first retracting the 3.552 TBq (96 Ci) Se-75 source back inside the camera. Based on the dose assessment from the licensee, the radiographer received an overexposure of 1.76 Sv (176 rem) to each hand. At the time of the reporting of the event, there were no signs of skin reddening on the radiographer’s hands. The U.S. statutory limit for extremity doses is 0.5 Sv (50 rem).

Category: Radiation Source United States of America »

INES-event
INES 2

Over Exposure of an Operator From a Puncture Wound During Work in an Active Glovebox

Routine glovebox work was taking place to empty a glovebox sump to clear a level alarm.
The operator's first action used the normal plant methods; no equipment is removed from the sump to do this.
As the alarm did not clear, the operator proceeded to remove and clean the probe, a task that the operator had performed before. The probe as supplied has to be adjusted to the correct length followed by making the item ‘glovebox ready’.
This includes the removal of any sharp edges.

Category: Fuel Reprocessing Sellafield United Kingdom »

INES-event
INES 2

Over Exposure of an Operator From a Puncture Wound During Work in an Active Glovebox

Routine glovebox work was taking place to empty a glovebox sump to clear a level alarm.
The operator's first action used the normal plant methods; no equipment is removed from the sump to do this.
As the alarm did not clear, the operator proceeded to remove and clean the probe, a task that the operator had performed
before.

Category: Fuel Reprocessing United Kingdom »

INES-event
INES 2

Stolen source in Tlaquepaque, Jalisco

On April 24th, 2017 at 12:51 hours UTC-6, the National Commission of Nuclear Safety and Safeguards (the mexican regulatory authority) received a notification from a licensee, that on April 23th, 2017, at 03:00 UTC-6, a vehicle transporting an industrial radiography device, containing a source of IR-192 was stolen in the town of Tlaquepaque, State of Jalisco, Mexico.
The lost source is Category 2, and it is still missing.

Category: Radiation Source Mexico »

INES-event
INES 2

Personal Contamination at Reprocessing Plant

Sampling of radioactive material was taking place on a reprocessing facility. This sampling task is performed twice daily and experienced senior staff are used to perform the operation. On this occasion a Shift Team Leader was engaged to undertake the task. Upon leaving the building and using the building exit hand and frisking monitors, the Shift Team Leader found himself to be contaminated. The Shift Team Leader reported to the Health Physics Surgery where contamination was found on one finger of his right hand and removed using the standard procedure.

Category: Fuel Reprocessing Sellafield United Kingdom »

INES-event
INES 2

Electronic Personal Dosimeter went into Alarm during X-ray Radiography Operations

Radiographers were working in a cell in a redundant reprocessing facility, carrying out digital imaging of legacy crates using X-rays in order to identify their contents.
This cell is an area of known high background radiation containing ten legacy crates.
A previous health physics survey of the crates had identified radiation levels in nine of the crates between 0.5 mSv/h and 1.8 mSv/h gamma, with the other crate up to 20mSv/h gamma.

Category: Fuel Reprocessing Sellafield United Kingdom »

INES-event
INES 2

Transport of package containing a radioactive source from Kenya to South Africa

A parcel containing an industrial radiography sealed source was transported from Kenya to South Africa. The package was labelled as empty (UN2908) and was handled as a general luggage during transportation in a South African Airways passenger flight. On arrival at the final destination the dose rate on the outside surface of the package was measured by the consignee to be 6mSv per hour. The measured dose rate on the surface of the package could potentially result in the low to moderate health risk to people who were in contact with the package.

Category: Transportation Kenya South Africa »

INES-event
INES 2

Inadvertent damage of a Se-75 source

On December the 12th, 2016, a Se-75 source was inadvertently damaged during re-pair work on faulty radiography equipment. The work was performed in Düsseldorf region in North Rhine-Westphalia by a specialized company within a controlled area. The source contained about 1.3 Terabecquerel Se-75. The radioactive substance was released during the repair work and contaminated persons and zones within and out-side of the controlled area. Besides the two workers performing the repair work, other persons were also contaminated.

Category: Radiation Source Germany »

INES-event
INES 2

Cyclotron operated with an open bunker door

On the 12th of October 2016 the Swedish Radiation Safety Authority was informed about an event that occurred on the 7th of October where a cyclotron was operated with an open bunker door. The licensee is authorised to produce short lived isotopes used for medical
diagnostics. The bunker is supposed to be sealed with interlocks preventing operation of the cyclotron with an open door. At the time of the event a study visit was performed at the facility by hospital personnel from the whole of Sweden lead by a representative from

Category: Radioisotope Processing/Handling Facility Sweden »

INES-event
INES 2

Overdose to Nuclear Pharmacist

The licensee (PETNET Solutions) has confirmed an extremity dose of greater than 0.5 Sv (50 rem) to one of its nuclear pharmacists. Dosimetry results for a ring badge worn on the pharmacist’s right ring finger accumulated a total dose of 0.511 Sv (51.1 rem) for the year as of October 19, 2016. The pharmacist received the dose while working at the licensee's locations in Phoenix, Arizona, and Portland, Oregon. The pharmacist has been placed on work restrictions. The licensee expects to complete a root cause analysis within 2 weeks. NRC EN52350

Category: Radioisotope Processing/Handling Facility United States of America »