[3I01-06] Sodium-cooled Fast Reactor-related Evaluation and Technology Development

[3I03] Analyses of Pump/Diagrid Link Rupture in Pool Type Sodium-Cooled Fast Reactor

*Yuichi ONODA¹, Masato UCHITA², Minako TOKIZAKI³, Hitoshi OKAZAKI³ (1. JAEA, 2. JAPC, 3. MFBR)

Keywords:Pool Type SFR, Pump/Diagrid Link Rupture, Design Basis Event, Plant Protection System Signal, Safety Analysis

The safety analyses were carried out to confirm the sufficiency of the function of the plant protection system against the pump/diagrid link rupture, which is a candidate of the design basis event in pool type SFR. Sensitivity has been studied for the parameters which are thought significantly to affect the detection of the pump/diagrid link rupture. The sufficiency of the function was confirmed by the analysis results that at least two signals are transmitted for the detection of the pump/diagrid link rupture, which is the development target of the plant protection system in pool type SFR.