In Seoul Semiconductor's radiation exposure incident, there were one more suspected workers than six known suspected workers.

It was confirmed that this accident occurred by arbitrarily manipulating the interlocking device related to the safe operation of the radiation generator to increase the quantity of semiconductor defect inspection.

According to the 'Cause of Seoul Radiation Exposure Accidents' submitted to the National Assembly's National Science and Technology Information and Communications Commission Chairman, Woong-rae Noh, one additional person was involved in the same work in addition to six suspected radiation exposures. I'm going to see you the day after tomorrow.

Of the six workers at the Seoul Semiconductor service provider who had been inspected from the 15th of last month to the end of the last month, two of them had long working hours and had chromosomal aberration due to abnormal symptoms such as erythema, pain, and fever in the finger skin and the results of the day after tomorrow is.

The other four are asymptomatic.

Yuanyuan said, "The radiation generating device, a device for semiconductor defect inspection, is an interlocking device that prevents radiation from being released when the door is opened." However, even when the door is opened by randomly releasing the interlocking device to increase the inspection quantity. "We manipulated the device to emit radiation."

"Service workers are trained to release and use interlocks," he says. "In the event of radiation, workers put their hands inside the equipment to mark defective parts." Local exposure occurred at the end. "

The accident was reported when two people with abnormal symptoms visited the Atomic Energy Medical Center on May 5.

We are aware of the incident and ordered the suspension of the equipment that caused the incident to investigate.