The Nuclear Safety and Security Commission is taking administrative action to impose a fine for a radiation exposure incident that occurred in May of this year at Samsung Electronics’ Giheung plant. The Nuclear Safety and Security Commission announced that, as a result of its investigation, Samsung Electronics violated the Nuclear Safety Act and that it was considering requesting an investigation to accurately determine the cause of the accident.
On the 26th, the Nuclear Safety and Security Commission held the 201st regular meeting of the Nuclear Safety and Security Commission and announced that two workers who were inspecting a radiation generator at Samsung Electronics’ Giheung plant in May of this year were exposed to radiation exceeding the annual safety standard, and that the radiation dose they were exposed to was 94 sieverts each. Sv), 28Sv. This is approximately 188 times and 56 times the annual safety level of 0.5Sv applied to radiation workers.
According to the Nuclear Safety and Security Commission, two workers performed maintenance after activating a safety device (interlock) that blocks radiation generation, but the safety device did not work and they were exposed to radiation. The device they were maintaining was a cabinet-type radiation generator manufactured by Rigaku of Japan, which is used to check wafer defects.
The Nuclear Safety and Security Commission announced that the investigation found that there was a gap near the switch that determines whether or not the equipment emits radiation (X-rays). Since X-rays were not emitted even from normal wiring, it is presumed that the wiring was changed so that X-rays continued to be emitted even when the interlock was activated. There are a total of 8 pieces of equipment in question at the Giheung workshop, and as a result of the investigation, wiring errors were confirmed in a total of 3 pieces, including the piece of equipment that caused the double accident.
〈Samsung Electronics Violations of the Nuclear Safety Act〉
detail | administrative action |
– Arbitrary manipulation of safety-related items of radiation generating devices (violation of Article 59, Paragraph 1 of the Nuclear Safety Act) | Up to 4.5 million won fine |
-Failure to take necessary measures to ensure that workers’ radiation exposure does not exceed the dose limit (violation of Article 91 of the Nuclear Safety Act) | Up to 6 million won fine |
The Nuclear Safety and Security Commission believes that Samsung Electronics violated the Nuclear Safety Act in that it arbitrarily removed and used safety-related items of radiation generating devices and did not properly take necessary measures to prevent maintenance workers from exceeding the dose limit. . According to the law, a fine of up to 10.5 million won may be imposed. The Nuclear Safety and Security Commission said, “We are reviewing the legal principles to see if it is possible to request an investigation to the prosecution to clearly investigate the circumstances of the accident.”
Reporter Choi Ji-won [email protected]
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2024-09-27 01:27:38