East Japan Railway Company (JR East) has released an outline regarding the suspension of operations on the Yamanote Line and Keihin-Tohoku Line caused by a power outage that occurred on the morning of January 16. According to the company, some kind of malfunction occurred when they attempted to start supplying power to the overhead lines after nighttime construction work.
Around Tamachi Station in Tokyo, station improvement work is currently underway in conjunction with the construction of the Haneda Airport Access Line. From the night of March 15 to the early hours of March 16, the power supply to the overhead lines was shut off while materials were being brought in.
According to JR East, at around 3:20 a.m. on the 16th, the procedures to start supplying power were carried out after the work was completed, but power feeding could not be started. At around 3:50 a.m., a power outage occurred between Shimbashi and Shinagawa stations on the Yamanote Line and the Keihin-Tohoku Line. After checking the grounding (voltage detection and grounding device), power supply was resumed, at which point smoke was observed coming from the Keihin-Tohoku Line’s voltage detection and grounding device.
Due to this, both lines suspended operations from the first trains of the day. The Keihin-Tohoku Line resumed full operation at 12:45 p.m., and the Yamanote Line at 1:08 p.m. According to JR East, approximately 673,000 people were affected by the suspension of operations.
JR East believes that some kind of malfunction that occurred when power feeding was initiated was the cause of the incident, and is continuing to investigate the details.
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This article was generated using automatic translation by GPT-4 API. The translation may not be accurate.
