RSS feed source: International Atomic Energy Association--Nuclear & Radiological Events

Exposure from a Medical Treatment Source

Print View Posted on: 26 December 2024

Event Date: 21 July 2017 Event Type: Radiation Source Event Location: Korea, Republic of, Seoul INES Rating: 3 (Final)

On July 21, 2017, at a hospital in Seoul, an incident occurred when the assigned staff member failed to follow the patient verification procedure in the I-131 therapy room. As a result, a dose of I-131 (5,550 MBq), intended for a thyroid desease patient, was mistakenly administered to another patient. The misadministrated patient had been hospitalized since July 19 for MIBG therapy and had already received a dose of I-131 (7,400 MBq). Due to the misadministration, the additional thyroid absorbed dose was estimated to be between 15.6 and 24.4 Gy.

INES Rating: 3 – Serious incident (Final) as per 23 May 2018

Impact on people and the environment Release beyond authorized limits? No Overexposure of a member of the public? Yes Overexposure of a worker? No

Click this link to continue reading the article on the source website.

RSS feed source: International Atomic Energy Association--Nuclear & Radiological Events

Workers Exceeded Annual Whole Body Dose Limits

Print View Posted on: 26 December 2024

Event Date: 31 December 2016 Event Type: Radiation Source Event Location: Korea, Republic of, Yeosu INES Rating: 3 (Final)

In December 2016, it was reported to the regulatory authority that an industrial radiography worker’s personal dosimeter reading had exceeded the annual dose limit. An investigation revealed that the worker had been exposed to high levels of radiation on a night-field radiography work during November and December 2016. As a result, the worker developed a deterministic effect(pancytopenia). Additionally, three other workers at the same company were found to have exceeded the dose limit. Among the four workers, the highest effective dose was evaluated at a maximum of 1.19 Sv.

INES Rating: 3 – Serious incident (Final) as per 28 December 2017

Impact on people and the environment Release beyond authorized limits? No Overexposure of a member of the public? No Overexposure of a worker? Yes

Click this link to continue reading the article on the source website.

RSS feed source: International Atomic Energy Association--Nuclear & Radiological Events

Accidential Exposure of Industrial Radiography Worker

Print View Posted on: 26 December 2024

Event Date: 03 December 2015 Event Type: Radiation Source Event Location: Korea, Republic of, Pyungtaek INES Rating: 3 (Final)

On December 3, 2015, an industrial radiography worker repeatedly conducted NDT without realizing that a sealed radioactive source(Ir-192, 1.1 TBq) had not been properly retracted and remained at the end of the guide tube. On December 8, the worker began feeling symptoms such as pain, redness, and blisters on both hands. Although the worker received treatment at a common hospital, no further actions were taken at that time. On January 27, 2016, the incident was reported to the regulatory authority, and the worker received treatment at a specialized hospital on radiation hazard. The equivalent dose to the worker’s hands was estimated to be approximately 30 Sv.

INES Rating: 3 – Serious incident (Final) as per 29 July 2016

Impact on people and the environment Release beyond authorized limits? No Overexposure of a member of the public?

Click this link to continue reading the article on the source website.

RSS feed source: International Atomic Energy Association--Nuclear & Radiological Events

Accidential Exposure of Industrial Radiography Worker

Print View Posted on: 26 December 2024

Event Date: 20 April 2015 Event Type: Radiation Source Event Location: Korea, Republic of, Busan INES Rating: 2 (Final)

On April 20, 2015, two workers were conducting a industrial radiography for Non-Destructive Test on the welds of a large steel product. During the process, the guide tube of the irradiator was not properly connected, causing the radiation source (Co-60, 1.85 TBq) to be withdrawn but not retrieved. One of the workers entered the radiographic testing room to retrieve the radiation source but accidentally stepped on the source without realizing its location, resulting in radiation exposure. On May 6, 2015, erythema was observed on the sole of his right foot, leading to the recognition of excessive radiation exposure. The doses were assessed as an effective dose of 0.9 mSv and a foot equivalent dose of 2.5 Sv.

INES Rating: 2 – Incident (Final) as per 29 November 2015

Impact on people and the environment Release beyond authorized limits? No

Click this link to continue reading the article on the source website.