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Status last meeting

Task 6.2 Materials for mechanical pump for heavy liquid metal reactors ( ENEA - 5 , KIT - 5) Month 1 – 30 – extended.

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Status last meeting

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  1. Task 6.2 Materials formechanical pump for heavy liquid metalreactors (ENEA - 5, KIT - 5)Month 1 – 30 – extended The erosion of structural materials in fluent lead is considered acceptable if the relative velocity between the lead and the structural surface is kept below 2 m/s. This limit cannot be respected for the mechanical pump where the relative velocity is up to 10 m/s or even higher at local areas. Material capable to operate in fluent lead with relative velocity up to 10 m/s and environment temperature up to 500°C with acceptable performance shall be individuated and qualified. Specific materials (Maxthal, SiSiC) tests in representative conditions (speed, mechanical load, thermohydraulic conditions) for heavy liquid metal reactors will be performed. Task responsiblepersons: ENEA: Mariano Tarantino; KIT: Adrian Jianu; Deliverables:D16 - Erosion stabilityofmaterials in fast flowinglead (M36) – ENEA, KIT

  2. Status last meeting Temperature of Pb: 480°C - Oxygen content: 10-6 wt% Speed of HLM: 2.5m/s – like in previous test Highly turbulent flow – Pb directed on the specimen Not only tangential action of the Pb Materials: SiSiC; Maxthal; FeCrAl GESA; Noriloy; Norihard • At this condition 480 °C in Pb with 10-6 wt% oxygen  No corrosion/erosion visible • Increase of Pb velocity was tested: • with water at room temperature - possible • With Pb at 480 °C failed at 2.5m/s • re-building of facility is discussed • Magnetic coupling will be replaced by magneto fluid coupling (water cooled) • - 7000 rpm - 60Nm transmission torque • New coupling is ordered - will be delivered in the next weeks – new tests can start in summer • Materials?: Maxthal, T91, SiSiC, Noriloy, GESA, ..

  3. Status now • Magnetic coupling was replaced by magneto fluid coupling (water cooled) • - 7000 rpm - 60Nm transmission torque • Refurbishment of CORELLA finished • Tests with rotation speed according to 10m/s • successful • Materials selected: Maxthal, T91, SiSiC, Noriloy, GESA • Specimens are prepared • Pb is now conditioned • Test will start in 2nd week of December

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