Sukegawa Electric Co., Ltd.

Sukegawa Electric Co., Ltd. (助川電気工業株式会社) is a Japanese company founded in February 1949 by Yokichi Mezuki in Sukegawa-cho, Hitachi City. It is engaged in heat and measurement system engineering, with offices in Hitachi, Takahagi, Tokyo, Osaka, and Hiroshima. The company is listed on the Tokyo Stock Exchange Standard Market and has capital of 921.1 million yen. Its representative director is the fifth president, Mitsutoshi Takahashi.

Sukegawa Electric Co., Ltd. was founded in February 1949 by Yokichi Mezuki with capital of 1 million yen in Sukegawa-cho, Hitachi City. In 1955, it completed and marketed sheathed heaters. In 1961, it completed and marketed Japan's first domestically produced sheathed thermocouples. In 1963, it completed and marketed sheathed micro-heaters. In 1965, it opened an Osaka sales office. In 1968, it completed and marketed sheathed resistance temperature detectors and delivered simulated fuel assemblies for FBR to the Japan Atomic Energy Research Institute. In 1971, it increased capital to 100 million yen and built a sodium experimental facility within the Namerikawa plant. In 1972, it opened a Tokyo sales office. In 1974, it delivered ECCS simulated fuel assemblies to the Japan Atomic Energy Research Institute and upgraded the Tokyo sales office to a Tokyo branch. In 1976, it increased capital to 150 million yen, established a wire drawing plant in the first phase of the Takahagi plant, and received the Tanabe Invention Merit Award for developing an induction-type sodium level gauge. In 1977, it exported simulated fuel rods to EG&G of the United States and sodium level gauges to Électricité de France. In 1978, it added a large nuclear equipment assembly plant (Building C) in the second phase of the Takahagi plant. In 1980, it received an Invention Merit Award for developing simulated fuel assemblies at the 5th Invention Awards hosted by the Japan Institute of Invention and Innovation and Nikkan Kogyo Shimbun. In 1981, Yokichi Mezuki received the Medal with Blue Ribbon for developing and nurturing simulated fuel rods. In 1982, it exported an electric heating wire manufacturing plant to the Soviet Union, received the Saikai Memorial Award for developing an annular flow channel linear induction electromagnetic pump, and Masanori Nozaki became Representative Director and President. In 1983, it received the Science and Technology Agency Director-General's Award for developing an induction-type sodium level gauge. In 1984, it increased capital to 264 million yen, Yokichi Mezuki received the Research and Development Award at the 1st Excellent Manager Awards, and it built an office building (current headquarters, Building A) within the Takahagi plant. In 1987, Yokichi Mezuki received the Order of the Sacred Treasure, Gold Rays with Rosette. In 1988, it built a clean room building (Building B) within the Takahagi plant, increased capital to 341.5 million yen, and Koichi Mezuki became Representative Director and President. In 1989, it opened a Tsukuba office. In 1990, it received the Minister of Labour Excellent Award as a labor safety excellent workplace. In 1991, it registered its shares with the Japan Securities Dealers Association and increased capital to 921.1 million yen. In 1998, it built a temperature sensor and heating equipment assembly plant within the Takahagi plant, relocated that department and headquarters functions from the Namerikawa plant, and obtained ISO9001 certification from LRQA. In 1999, it obtained JCSS accreditation from the Minister of International Trade and Industry. In 2004, it listed its shares on the JASDAQ Securities Exchange, obtained ISO14001 certification, and obtained ASME 'U' stamp certification. In 2005, it delivered simulated fuel assemblies (ATLAS) to the Korea Atomic Energy Research Institute as a severe accident countermeasure for light water reactors. In 2007, it built a large equipment assembly plant (Building J) within the Takahagi plant. In 2009, it received the 4th Japan Society of Mechanical Engineers Excellent Product Award for technology and achievements related to reactor simulated fuel assemblies. In 2010, it built an aluminum test building within the Takahagi plant. In 2012, it delivered simulated fuel assemblies (SMART-ITL CORE HEATER BUNDLE) to the Korea Atomic Energy Research Institute. In 2013, it completed and began delivering liquid crystal substrate heating heaters, jointly developed a liquid lithium target for accelerator BNCT with Tokyo Institute of Technology, delivered a 'heat and material flow loop device (Oroshhi-2)' for fusion research to the National Institute for Fusion Science, delivered simulated fuel assemblies (ATLAS2) to the Korea Atomic Energy Research Institute as a severe accident countermeasure for light water reactors, and built a second aluminum test building within the Takahagi plant. In 2015, Osamu Kotaki became Representative Director and President. In 2016, a cafeteria building was completed within the Takahagi plant and opened as an employee cafeteria. In 2018, it delivered simulated fuel assemblies (STELLA2 HeaterBundle) to the Korea Atomic Energy Research Institute for SFR (sodium-cooled fast reactor) experiments. In 2020, it built a molten metal test building within the Takahagi plant. In 2022, it listed on the Tokyo Stock Exchange Standard Market and Mitsutoshi Takahashi became Representative Director and President.

Heat and measurement system engineering

• Sheathed heaters

• Sheathed thermocouples (Nimbrox)

• Sheathed micro-heaters

• Sheathed resistance temperature detectors

• Simulated fuel assemblies

• Induction-type sodium level gauges

• Liquid crystal substrate heating heaters

1. 1助川電気工業株式会社｜熱と計測のシステムエンジニアリング｜日立・高萩・東京・大阪・広島sukegawadenki.co.jp
2. 2会社案内｜助川電気工業株式会社｜熱と計測のシステムエンジニアリング｜日立・高萩・東京・大阪・広島sukegawadenki.co.jp