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Decommissioning of Unit 1 at Japan's Ikata Nuclear Power Plant Proposed to Move to Phase 2

On the 11th, Ichiro Ogi, Mayor of Yawatahama City in Ehime Prefecture, Japan, reported to the prefectural government that he has agreed to the decommissioning work of Unit 1 at the Ikata Nuclear Power Plant of Shikoku Electric Power Company entering Phase 2. Ichiro Ogi requested that Shikoku Electric Power thoroughly implement relevant measures during the subsequent decommissioning process to prevent the spread of radioactive materials, control the radiation exposure dose of workers, and protect the surrounding environment of the nuclear power plant. Unit 1 at the Ikata Nuclear Power Plant ceased operation in 2016, and since 2017, decommissioning work has been carried out in four phases, with a planned duration of more than 40 years. Currently, the decommissioning work of this unit is still in Phase 1. According to the safety agreement arrangements, Shikoku Electric Power has submitted a prior consultation application to the Ehime Prefectural Government...

2026-09-11

Second Phase of Decommissioning for Unit 1 of Japan's Ikata Nuclear Power Plant Approved by Prefectural Committee

The Environmental Safety Management Committee for the Ikata Nuclear Power Plant in Ehime Prefecture, Japan, held a meeting in Matsuyama City on September 2 to discuss plans by Shikoku Electric Power to proceed with the second phase of decommissioning for Unit 1 of the Ikata Nuclear Power Plant. The unit, located in Ikata-cho, Ehime Prefecture, is currently in the process of being decommissioned. The decommissioning of Unit 1 at the Ikata Nuclear Power Plant has been divided into four main phases. Shikoku Electric Power had previously conducted prior consultations with Ehime Prefecture and Ikata-cho regarding the transition to the next phase, obtained local consent, and submitted relevant applications to Japan's Nuclear Regulation Authority (NRA). In July of this year, the NRA approved the application...

2026-09-03

Bitumen Solidification Facility at Unit 2 of Japan's Ikata Nuclear Power Plant Returns to Normal

Shikoku Electric Power Co. reported on August 25, 2026, that the bitumen solidification facility at Unit 2 of Japan's Ikata Nuclear Power Plant, currently in a decommissioned state, had returned to normal operation at 10:45 a.m. that day. The gasket at the joint of the mixer top cover, where the earlier abnormality had been detected, had been replaced, and trial operation results showed no abnormalities. The incident occurred on April 28. On that day, when operators started the bitumen solidification facility in the controlled area of the reactor auxiliary building, they observed a steam-like phenomenon near the mixer thermometer, which subsequently disappeared on its own. Maintenance personnel later inspected and confirmed at 3:05 p.m. that the steam-like gas originated from inside the mixer and had escaped through the joint of the mixer top cover; at 5:06 p.m., the bitumen solidification facility was shut down.

2026-08-26

Ikata Nuclear Power Station Unit 1 Decommissioning Phase 2 Plan Approved by Experts

An expert organization in Ehime Prefecture, Japan, regarding safety management at the Ikata Nuclear Power Station recently held a meeting to discuss the decommissioning plan for Unit 1 of the station. The report formed at the meeting deemed it appropriate for the unit to enter the second phase of decommissioning in fiscal year 2027. The meeting was convened by the Nuclear Safety Expert Subcommittee under the Ikata Nuclear Power Station Environmental Safety Management Committee. This committee is responsible for providing advice to the Governor of Ehime Prefecture on safety management at the Ikata Nuclear Power Station. At the meeting, eight academic experts reviewed the decommissioning plan for Unit 1. The decommissioning of Unit 1 at the Ikata Nuclear Power Station began in 2017 and is divided into four phases overall, planned to last approximately 40 years. Currently, the decommissioning work...

2026-08-19

Ikata Nuclear Power Station Reports 5 Notifiable Events in July, None Causing Radiological Environmental Impact

Shikoku Electric Power Co. reported on August 10 that the five events reported to Ehime Prefecture, Ikata Town, and relevant local governments from the Ikata Nuclear Power Station in July 2026 did not fall under legally required reporting events and caused no radiological impact on the environment. The five events were as follows: On July 3, an employee of a partner company at the Ikata Nuclear Power Station experienced physical discomfort at an office location in a non-controlled area and was transported by ambulance at 17:18 that day. The employee was conscious at the time and experienced no radiation exposure or radioactive contamination. On July 16, during the decommissioning process of Unit 2 at the Ikata Nuclear Power Station, seawater leakage was discovered at the flange of the seawater outlet pipe of emergency diesel generator 2B in the reactor auxiliary building. After maintenance personnel determined that a detailed inspection of the flange was required, the leak point was isolated, and the leakage was confirmed to have stopped at 15:38 that day. The maximum estimated volume of leaked seawater was approximately 7 cubic meters, all of which was recovered in the floor drain sump within the building and did not flow outside. Subsequent inspection revealed a through-hole approximately 7 mm in diameter at the flange, and the station replaced the flange and confirmed water flow integrity, restoring normal conditions at 14:05 on July 17. This event did not affect the unit or cause radiological environmental impact, and further investigation into the cause will be conducted.

2026-08-10

Japan's Ikata Nuclear Power Plant Unit 1 Decommissioning Plan to Enter Second Phase

The Environmental Safety Management Committee for the Ikata Nuclear Power Plant, established by the Ehime Prefectural Government, recently held a meeting to review the progress of the decommissioning plan for Unit 1 of the Ikata Nuclear Power Plant. The unit ceased operation in 2016 and is currently in the decommissioning implementation phase. Unit 1 of the Ikata Nuclear Power Plant is operated by Shikoku Electric Power Co. The company began decommissioning the unit in 2017, planning to carry out the work in four phases over a total period of approximately 40 years. Currently, the first phase has been largely completed, primarily involving the removal of nuclear fuel. Shikoku Electric Power Co. has applied to the Japanese central government to enter the second phase, which involves dismantling equipment around the reactor area, and has...

2026-07-30