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Detector malfunction at Onagawa nuke power station unit 2

Tohoku Electric Power Co announced on May 25 that Onagawa nuclear power station Unit 2 (with a capacity of 825,000 kW, BWR type, in Onagawa Town, Miyagi Prefecture), which had resumed power generation, experienced a deviation from operational limits. According to the company, in one of the four detectors measuring radiation levels in the piping that carries steam generated in the reactor to the turbine, an alarm indicating high radiation levels was triggered. However, after conducting an inspection, no abnormalities were found in the transmission cable connections or other aspects, and it was confirmed that it was indicating correct values. Furthermore, there were no problems with the unit's operational status, as a result, the company increased power output. As of 10:20 JST on May 26, power output was 833,000 kW.


 

<PR>Notice

Rim Energy Agora 2026

We at Rim Intelligence are organizing our second international forum, the "Rim Energy Agora 2026", in November this year.

We hope to discuss together with participants various topics related to energy through keynote speeches, panel discussions and exhibits from companies and associations.

For companies outside Japan, this is a great opportunity to connect directly with Japanese players.

For Japanese companies, it is an invaluable chance to learn about energy and leading edge technology.

Do not miss this occasion. To register for the event, please visit the Agora special site below.

agora26

     

Rim Power report provides price trends in the spot market as the fully-liberalized retail market spotlights new power supply sources. We publish our own assessments of forward prices covering 15 months for Tokyo and Kansai areas as well as all Japan.

The report elaborates on spot transactions on the Tokyo Commodity Exchange (TOCOM) and the European Energy Exchange (EEX). We also update the operational status of thermal power stations in Japan.

The report also covers spark/dark spreads and includes on-time market news focusing on power-related topics. The use of various tables and graphs makes the report easier to read.

Main contents Rim Index Prices: Day-Ahead and Forward Prices

JEPX: Price trends, updates on buy/sell tenders, Price divergence by region Updates on thermal power stations: Tables showing operational status TOCOM/EEX: Transactions, Analysis on prices and background of deals Fuel cost adjustment by nine power utilities in Japan.

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