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Report No.

Improvement of signal strength on primary heat transport system flow rate in pool type SFR

Takano, Kazuya ; Kato, Atsushi ; Uchita, Masato*; Okazaki, Hitoshi*; Ikari, Risako*

Primary Heat Transport System (PHTS) flow rate is the most promising signal to detect the pump/diagrid link rupture in pool type SFR. The electromagnetic flowmeter is considered to measure the PHTS flow rate and is designed to install nearby outlet of the PHTS circulation pump in the current design of pool-type SFR with 600 MWe. The flowmeter could be significantly affected by the noise from pump motor. In order to improve the signal strength, the structure of flowmeter is drastically modified with the D-shape yokes and the magnetic circuits above and below an electrode.



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